Chemical classification of Upper Orange WMA 2006-12-18

Upper Orange WMA

Chemical classification run on 2006-12-18 - 16:14:53

Program /prjws8/users/michael/aml/qatrivhtml.aml
Data file $WMSYS/wmdata/wq/MACRO061128.dat
Data selection dates 2001-01-01 to 2005-12-31
Programmer Michael Silberbauer
Institute for Water Quality Studies,
Department of Water Affairs and Forestry, Private Bag X313,
PRETORIA, South Africa 0001 - SilberbauerM@dwaf.gov.za

Note that qatrivhtml.aml includes monitoring points outside drainage region boundaries, within 500 metres of the boundaries, to allow for geographic errors. Thus, in some cases, the program may use the same monitoring point to classify two adjacent drainage regions.
Minimum number of samples used per classification = 5.
[explanation of classification process] [map] [chemical index page] [IWQS home page]

144 quaternary drainage regions overlap Upper Orange WMA

(1) Catchment C51A: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C5H012Q01 257 Riet River at Kromdraai-Rietwater 1

C5H021Q01 eye Mosters Hoek Eye at Mosters Hoek none

Station	total n samples	description	map code
C5H012Q01	257	Riet River at Kromdraai-Rietwater	1
C5H021Q01	eye	Mosters Hoek Eye at Mosters Hoek	none

C51A - Stations used: 1, Samples selected: 14 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 14 7.82 C5H012Q01 8.24 C5H012Q01 8.61 C5H012Q01 9 C5H012Q01 -log [H⁺]

Fluoride 14 0.23 C5H012Q01 0.38 C5H012Q01 0.46 C5H012Q01 0.51 C5H012Q01 mg l^-1

NO3(N) 14 0.02 C5H012Q01 0.02 C5H012Q01 0.055 C5H012Q01 0.085 C5H012Q01 mg l^-1

Sulphate 14 11.4 C5H012Q01 16.3 C5H012Q01 19.2 C5H012Q01 20.9 C5H012Q01 mg l^-1

Chloride 14 5 C5H012Q01 16 C5H012Q01 18.9 C5H012Q01 21.7 C5H012Q01 mg l^-1

Sodium 14 14 C5H012Q01 25.6 C5H012Q01 37.2 C5H012Q01 43.9 C5H012Q01 mg l^-1

Magnesium 14 7.2 C5H012Q01 15.8 C5H012Q01 21.6 C5H012Q01 30.6 C5H012Q01 mg l^-1

TDS 14 184 C5H012Q01 341 C5H012Q01 423 C5H012Q01 476 C5H012Q01 mg l^-1

Conductivity 14 22 C5H012Q01 43.3 C5H012Q01 52.2 C5H012Q01 57.3 C5H012Q01 mS m^-1

Summary of classification: C51A n=14 Class 0

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	14	7.82	C5H012Q01	8.24	C5H012Q01	8.61	C5H012Q01	9	C5H012Q01	-log [H⁺]
Fluoride	14	0.23	C5H012Q01	0.38	C5H012Q01	0.46	C5H012Q01	0.51	C5H012Q01	mg l^-1
NO3(N)	14	0.02	C5H012Q01	0.02	C5H012Q01	0.055	C5H012Q01	0.085	C5H012Q01	mg l^-1
Sulphate	14	11.4	C5H012Q01	16.3	C5H012Q01	19.2	C5H012Q01	20.9	C5H012Q01	mg l^-1
Chloride	14	5	C5H012Q01	16	C5H012Q01	18.9	C5H012Q01	21.7	C5H012Q01	mg l^-1
Sodium	14	14	C5H012Q01	25.6	C5H012Q01	37.2	C5H012Q01	43.9	C5H012Q01	mg l^-1
Magnesium	14	7.2	C5H012Q01	15.8	C5H012Q01	21.6	C5H012Q01	30.6	C5H012Q01	mg l^-1
TDS	14	184	C5H012Q01	341	C5H012Q01	423	C5H012Q01	476	C5H012Q01	mg l^-1
Conductivity	14	22	C5H012Q01	43.3	C5H012Q01	52.2	C5H012Q01	57.3	C5H012Q01	mS m^-1

(2) Catchment C51B: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C5H008Q01 22 Riet River at Riviera 2

C5H009Q01 12 Ospoort Spruit at Os Poort 3

Station	total n samples	description	map code
C5H008Q01	22	Riet River at Riviera	2
C5H009Q01	12	Ospoort Spruit at Os Poort	3

C51B - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(3) Catchment C51C: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C5H012Q01 257 Riet River at Kromdraai-Rietwater 4

Station	total n samples	description	map code
C5H012Q01	257	Riet River at Kromdraai-Rietwater	4

C51C - Stations used: 1, Samples selected: 14 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 14 7.82 C5H012Q01 8.24 C5H012Q01 8.61 C5H012Q01 9 C5H012Q01 -log [H⁺]

Fluoride 14 0.23 C5H012Q01 0.38 C5H012Q01 0.46 C5H012Q01 0.51 C5H012Q01 mg l^-1

NO3(N) 14 0.02 C5H012Q01 0.02 C5H012Q01 0.055 C5H012Q01 0.085 C5H012Q01 mg l^-1

Sulphate 14 11.4 C5H012Q01 16.3 C5H012Q01 19.2 C5H012Q01 20.9 C5H012Q01 mg l^-1

Chloride 14 5 C5H012Q01 16 C5H012Q01 18.9 C5H012Q01 21.7 C5H012Q01 mg l^-1

Sodium 14 14 C5H012Q01 25.6 C5H012Q01 37.2 C5H012Q01 43.9 C5H012Q01 mg l^-1

Magnesium 14 7.2 C5H012Q01 15.8 C5H012Q01 21.6 C5H012Q01 30.6 C5H012Q01 mg l^-1

TDS 14 184 C5H012Q01 341 C5H012Q01 423 C5H012Q01 476 C5H012Q01 mg l^-1

Conductivity 14 22 C5H012Q01 43.3 C5H012Q01 52.2 C5H012Q01 57.3 C5H012Q01 mS m^-1

Summary of classification: C51C n=14 Class 0

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	14	7.82	C5H012Q01	8.24	C5H012Q01	8.61	C5H012Q01	9	C5H012Q01	-log [H⁺]
Fluoride	14	0.23	C5H012Q01	0.38	C5H012Q01	0.46	C5H012Q01	0.51	C5H012Q01	mg l^-1
NO3(N)	14	0.02	C5H012Q01	0.02	C5H012Q01	0.055	C5H012Q01	0.085	C5H012Q01	mg l^-1
Sulphate	14	11.4	C5H012Q01	16.3	C5H012Q01	19.2	C5H012Q01	20.9	C5H012Q01	mg l^-1
Chloride	14	5	C5H012Q01	16	C5H012Q01	18.9	C5H012Q01	21.7	C5H012Q01	mg l^-1
Sodium	14	14	C5H012Q01	25.6	C5H012Q01	37.2	C5H012Q01	43.9	C5H012Q01	mg l^-1
Magnesium	14	7.2	C5H012Q01	15.8	C5H012Q01	21.6	C5H012Q01	30.6	C5H012Q01	mg l^-1
TDS	14	184	C5H012Q01	341	C5H012Q01	423	C5H012Q01	476	C5H012Q01	mg l^-1
Conductivity	14	22	C5H012Q01	43.3	C5H012Q01	52.2	C5H012Q01	57.3	C5H012Q01	mS m^-1

(7) Catchment C51G: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C5H020Q01 eye Trompsburg Eye at Trompsburg Townlands none

Station	total n samples	description	map code
C5H020Q01	eye	Trompsburg Eye at Trompsburg Townlands	none

C51G - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(9) Catchment C51J: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C5H040Q01 dam Kalkfontein Dam on Riet River: Left Cana none

Station	total n samples	description	map code
C5H040Q01	dam	Kalkfontein Dam on Riet River: Left Cana	none

C51J - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(10) Catchment C51K: Total number of "H...Q" (flow gauging, quality) stations = 3.

Station total n
samples description map
code

C5H018Q01 563 Modder River at Tweerivier 5

C5H030Q01 419 @ Rietrivier Sett..Jacobsdal on Orange-R 6

C5H040Q01 dam Kalkfontein Dam on Riet River: Left Cana none

Station	total n samples	description	map code
C5H018Q01	563	Modder River at Tweerivier	5
C5H030Q01	419	@ Rietrivier Sett..Jacobsdal on Orange-R	6
C5H040Q01	dam	Kalkfontein Dam on Riet River: Left Cana	none

C51K - Stations used: 2, Samples selected: 106 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 106 6.6 C5H030Q01 8.15 C5H030Q01 8.31 C5H030Q01 8.75 C5H030Q01 -log [H⁺]

Fluoride 106 0.1 C5H030Q01 0.19 C5H030Q01 0.23 C5H030Q01 0.48 C5H030Q01 mg l^-1

NO3(N) 106 0.02 C5H030Q01 0.336 C5H030Q01 0.491 C5H030Q01 1.38 C5H030Q01 mg l^-1

Sulphate 106 5.1 C5H030Q01 10.5 C5H030Q01 18.1 C5H030Q01 208.2 C5H030Q01 mg l^-1

Chloride 106 2 C5H030Q01 5 C5H030Q01 6 C5H030Q01 147 C5H030Q01 mg l^-1

Sodium 106 3.9 C5H030Q01 6.3 C5H030Q01 11.3 C5H030Q01 106.2 C5H030Q01 mg l^-1

Magnesium 106 4.7 C5H030Q01 7.1 C5H030Q01 13 C5H030Q01 47.8 C5H030Q01 mg l^-1

TDS 106 122 C5H030Q01 150 C5H030Q01 229 C5H030Q01 767 C5H030Q01 mg l^-1

Conductivity 106 16 C5H030Q01 20.3 C5H030Q01 28.9 C5H030Q01 112.2 C5H030Q01 mS m^-1

Summary of classification: C51K n=106 Class 0

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	106	6.6	C5H030Q01	8.15	C5H030Q01	8.31	C5H030Q01	8.75	C5H030Q01	-log [H⁺]
Fluoride	106	0.1	C5H030Q01	0.19	C5H030Q01	0.23	C5H030Q01	0.48	C5H030Q01	mg l^-1
NO3(N)	106	0.02	C5H030Q01	0.336	C5H030Q01	0.491	C5H030Q01	1.38	C5H030Q01	mg l^-1
Sulphate	106	5.1	C5H030Q01	10.5	C5H030Q01	18.1	C5H030Q01	208.2	C5H030Q01	mg l^-1
Chloride	106	2	C5H030Q01	5	C5H030Q01	6	C5H030Q01	147	C5H030Q01	mg l^-1
Sodium	106	3.9	C5H030Q01	6.3	C5H030Q01	11.3	C5H030Q01	106.2	C5H030Q01	mg l^-1
Magnesium	106	4.7	C5H030Q01	7.1	C5H030Q01	13	C5H030Q01	47.8	C5H030Q01	mg l^-1
TDS	106	122	C5H030Q01	150	C5H030Q01	229	C5H030Q01	767	C5H030Q01	mg l^-1
Conductivity	106	16	C5H030Q01	20.3	C5H030Q01	28.9	C5H030Q01	112.2	C5H030Q01	mS m^-1

(11) Catchment C51L: Total number of "H...Q" (flow gauging, quality) stations = 3.

Station total n
samples description map
code

C5H016Q01 692 at Estate Biesiesbult Aucampshoop on Rie 7

C5H035Q01 516 @ Twee Rivier D-S Twee Rivier on Modder 8

C5H014Q01 477 at Klipdrift Ritchie on Rietrivier 9

Station	total n samples	description	map code
C5H016Q01	692	at Estate Biesiesbult Aucampshoop on Rie	7
C5H035Q01	516	@ Twee Rivier D-S Twee Rivier on Modder	8
C5H014Q01	477	at Klipdrift Ritchie on Rietrivier	9

C51L - Stations used: 3, Samples selected: 243 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 243 7.1 C5H035Q01 8.09 C5H035Q01 8.26 C5H035Q01 8.66 C5H014Q01 -log [H⁺]

Fluoride 243 0.1 C5H035Q01 0.21 C5H014Q01 0.28 C5H035Q01 0.36 C5H016Q01 mg l^-1

NO3(N) 243 0.02 C5H014Q01 0.27 C5H035Q01 0.915 C5H035Q01 4.417 C5H035Q01 mg l^-1

Sulphate 243 3 C5H014Q01 32.2 C5H035Q01 113.4 C5H035Q01 243.1 C5H016Q01 mg l^-1

Chloride 243 2.5 C5H014Q01 28.9 C5H014Q01 134.5 C5H035Q01 362.1 C5H016Q01 mg l^-1

Sodium 243 4.2 C5H014Q01 25.1 C5H014Q01 81.9 C5H035Q01 221.2 C5H016Q01 mg l^-1

Magnesium 243 5.1 C5H035Q01 12.4 C5H035Q01 34.5 C5H035Q01 78 C5H016Q01 mg l^-1

TDS 243 130 C5H014Q01 253 C5H014Q01 601 C5H035Q01 1202 C5H016Q01 mg l^-1

Conductivity 243 17 C5H014Q01 36 C5H014Q01 92.2 C5H035Q01 198 C5H016Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C51L n=243 Class 1: I(Cl Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	243	7.1	C5H035Q01	8.09	C5H035Q01	8.26	C5H035Q01	8.66	C5H014Q01	-log [H⁺]
Fluoride	243	0.1	C5H035Q01	0.21	C5H014Q01	0.28	C5H035Q01	0.36	C5H016Q01	mg l^-1
NO3(N)	243	0.02	C5H014Q01	0.27	C5H035Q01	0.915	C5H035Q01	4.417	C5H035Q01	mg l^-1
Sulphate	243	3	C5H014Q01	32.2	C5H035Q01	113.4	C5H035Q01	243.1	C5H016Q01	mg l^-1
Chloride	243	2.5	C5H014Q01	28.9	C5H014Q01	134.5	C5H035Q01	362.1	C5H016Q01	mg l^-1
Sodium	243	4.2	C5H014Q01	25.1	C5H014Q01	81.9	C5H035Q01	221.2	C5H016Q01	mg l^-1
Magnesium	243	5.1	C5H035Q01	12.4	C5H035Q01	34.5	C5H035Q01	78	C5H016Q01	mg l^-1
TDS	243	130	C5H014Q01	253	C5H014Q01	601	C5H035Q01	1202	C5H016Q01	mg l^-1
Conductivity	243	17	C5H014Q01	36	C5H014Q01	92.2	C5H035Q01	198	C5H016Q01	mS m^-1

(12) Catchment C51M: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C5H016Q01 692 at Estate Biesiesbult Aucampshoop on Rie 10

C5H048Q01 733 at Zoutpansdrift on Rietrivier 11

Station	total n samples	description	map code
C5H016Q01	692	at Estate Biesiesbult Aucampshoop on Rie	10
C5H048Q01	733	at Zoutpansdrift on Rietrivier	11

C51M - Stations used: 2, Samples selected: 248 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 248 7.41 C5H048Q01 8.24 C5H048Q01 8.44 C5H048Q01 8.68 C5H048Q01 -log [H⁺]

Fluoride 248 0.1 C5H048Q01 0.31 C5H048Q01 0.36 C5H048Q01 0.61 C5H048Q01 mg l^-1

NO3(N) 248 0.02 C5H048Q01 0.055 C5H048Q01 0.237 C5H016Q01 0.967 C5H048Q01 mg l^-1

Sulphate 248 9.6 C5H016Q01 192.7 C5H048Q01 366.5 C5H048Q01 528.5 C5H048Q01 mg l^-1

Chloride 248 5 C5H016Q01 243.8 C5H048Q01 474.2 C5H048Q01 647.6 C5H048Q01 mg l^-1

Sodium 248 4.9 C5H016Q01 155.7 C5H048Q01 285.7 C5H048Q01 418.9 C5H048Q01 mg l^-1

Magnesium 248 6.1 C5H016Q01 55.3 C5H048Q01 97.4 C5H048Q01 133.9 C5H048Q01 mg l^-1

TDS 248 142 C5H016Q01 919 C5H048Q01 1556 C5H048Q01 2071 C5H048Q01 mg l^-1

Conductivity 248 18 C5H016Q01 151 C5H048Q01 259.2 C5H048Q01 344 C5H048Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C51M n=248 Class 2: I(SO4) II(Cl Na Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	248	7.41	C5H048Q01	8.24	C5H048Q01	8.44	C5H048Q01	8.68	C5H048Q01	-log [H⁺]
Fluoride	248	0.1	C5H048Q01	0.31	C5H048Q01	0.36	C5H048Q01	0.61	C5H048Q01	mg l^-1
NO3(N)	248	0.02	C5H048Q01	0.055	C5H048Q01	0.237	C5H016Q01	0.967	C5H048Q01	mg l^-1
Sulphate	248	9.6	C5H016Q01	192.7	C5H048Q01	366.5	C5H048Q01	528.5	C5H048Q01	mg l^-1
Chloride	248	5	C5H016Q01	243.8	C5H048Q01	474.2	C5H048Q01	647.6	C5H048Q01	mg l^-1
Sodium	248	4.9	C5H016Q01	155.7	C5H048Q01	285.7	C5H048Q01	418.9	C5H048Q01	mg l^-1
Magnesium	248	6.1	C5H016Q01	55.3	C5H048Q01	97.4	C5H048Q01	133.9	C5H048Q01	mg l^-1
TDS	248	142	C5H016Q01	919	C5H048Q01	1556	C5H048Q01	2071	C5H048Q01	mg l^-1
Conductivity	248	18	C5H016Q01	151	C5H048Q01	259.2	C5H048Q01	344	C5H048Q01	mS m^-1

(13) Catchment C52A: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C5H037Q01 dam Rustfontein Dam on Modder River: Left CA none

Station	total n samples	description	map code
C5H037Q01	dam	Rustfontein Dam on Modder River: Left CA	none

C52A - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(14) Catchment C52B: Total number of "H...Q" (flow gauging, quality) stations = 7.

Station total n
samples description map
code

C5H003Q01 476 at Likatlong -Sannaspos on Modderrivier 12

C5H027Q01 8 Sepane Spruit at Likatlong-Sannaspos 13

C5H029Q01 6 at Kromdraai on Klein Modder Rivier 14

C5H037Q01 dam Rustfontein Dam on Modder River: Left CA none

C5H028Q01 5 Kgabanyane River at Blijdschap 15

C5H022Q01 88 Kgabanyane River at Bedford up Stream Gr 16

C5H023Q01 150 Kgabanyane River at Dankbaar D-Stream Gr 17

Station	total n samples	description	map code
C5H003Q01	476	at Likatlong -Sannaspos on Modderrivier	12
C5H027Q01	8	Sepane Spruit at Likatlong-Sannaspos	13
C5H029Q01	6	at Kromdraai on Klein Modder Rivier	14
C5H037Q01	dam	Rustfontein Dam on Modder River: Left CA	none
C5H028Q01	5	Kgabanyane River at Blijdschap	15
C5H022Q01	88	Kgabanyane River at Bedford up Stream Gr	16
C5H023Q01	150	Kgabanyane River at Dankbaar D-Stream Gr	17

C52B - Stations used: 6, Samples selected: 128 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 128 7.1 C5H003Q01 8.25 C5H003Q01 8.47 C5H003Q01 8.73 C5H003Q01 -log [H⁺]

Fluoride 128 0.1 C5H023Q01 0.27 C5H003Q01 0.36 C5H003Q01 0.44 C5H022Q01 mg l^-1

NO3(N) 128 0.02 C5H023Q01 0.153 C5H003Q01 1.271 C5H003Q01 3.878 C5H003Q01 mg l^-1

Sulphate 128 6.8 C5H003Q01 20.4 C5H022Q01 38.6 C5H003Q01 79 C5H003Q01 mg l^-1

Chloride 128 4.9 C5H023Q01 18.4 C5H003Q01 48.5 C5H003Q01 66.4 C5H003Q01 mg l^-1

Sodium 128 5.4 C5H023Q01 29.8 C5H003Q01 57.7 C5H003Q01 87.5 C5H003Q01 mg l^-1

Magnesium 128 2 C5H003Q01 14.3 C5H003Q01 25.4 C5H003Q01 35.9 C5H022Q01 mg l^-1

TDS 128 87 C5H023Q01 319 C5H003Q01 526 C5H003Q01 620 C5H022Q01 mg l^-1

Conductivity 128 10.9 C5H023Q01 41.4 C5H003Q01 67.2 C5H003Q01 79.8 C5H003Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C52B n=128 Class 1: I(TDS)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	128	7.1	C5H003Q01	8.25	C5H003Q01	8.47	C5H003Q01	8.73	C5H003Q01	-log [H⁺]
Fluoride	128	0.1	C5H023Q01	0.27	C5H003Q01	0.36	C5H003Q01	0.44	C5H022Q01	mg l^-1
NO3(N)	128	0.02	C5H023Q01	0.153	C5H003Q01	1.271	C5H003Q01	3.878	C5H003Q01	mg l^-1
Sulphate	128	6.8	C5H003Q01	20.4	C5H022Q01	38.6	C5H003Q01	79	C5H003Q01	mg l^-1
Chloride	128	4.9	C5H023Q01	18.4	C5H003Q01	48.5	C5H003Q01	66.4	C5H003Q01	mg l^-1
Sodium	128	5.4	C5H023Q01	29.8	C5H003Q01	57.7	C5H003Q01	87.5	C5H003Q01	mg l^-1
Magnesium	128	2	C5H003Q01	14.3	C5H003Q01	25.4	C5H003Q01	35.9	C5H022Q01	mg l^-1
TDS	128	87	C5H023Q01	319	C5H003Q01	526	C5H003Q01	620	C5H022Q01	mg l^-1
Conductivity	128	10.9	C5H023Q01	41.4	C5H003Q01	67.2	C5H003Q01	79.8	C5H003Q01	mS m^-1

(15) Catchment C52C: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C5H026Q01 6 Koranna Spruit at Brightside 18

Station	total n samples	description	map code
C5H026Q01	6	Koranna Spruit at Brightside	18

C52C - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(16) Catchment C52D: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C5H003Q01 476 at Likatlong -Sannaspos on Modderrivier 19

Station	total n samples	description	map code
C5H003Q01	476	at Likatlong -Sannaspos on Modderrivier	19

C52D - Stations used: 1, Samples selected: 108 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 108 7.1 C5H003Q01 8.24 C5H003Q01 8.47 C5H003Q01 8.73 C5H003Q01 -log [H⁺]

Fluoride 108 0.18 C5H003Q01 0.27 C5H003Q01 0.32 C5H003Q01 0.41 C5H003Q01 mg l^-1

NO3(N) 108 0.02 C5H003Q01 0.259 C5H003Q01 1.348 C5H003Q01 3.878 C5H003Q01 mg l^-1

Sulphate 108 6.8 C5H003Q01 22 C5H003Q01 39.9 C5H003Q01 79 C5H003Q01 mg l^-1

Chloride 108 5 C5H003Q01 25.1 C5H003Q01 49.4 C5H003Q01 66.4 C5H003Q01 mg l^-1

Sodium 108 8.7 C5H003Q01 30.9 C5H003Q01 57.7 C5H003Q01 87.5 C5H003Q01 mg l^-1

Magnesium 108 2 C5H003Q01 14.3 C5H003Q01 24.3 C5H003Q01 29.6 C5H003Q01 mg l^-1

TDS 108 139 C5H003Q01 319 C5H003Q01 513 C5H003Q01 611 C5H003Q01 mg l^-1

Conductivity 108 13 C5H003Q01 41.4 C5H003Q01 66.4 C5H003Q01 79.8 C5H003Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C52D n=108 Class 1: I(TDS)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	108	7.1	C5H003Q01	8.24	C5H003Q01	8.47	C5H003Q01	8.73	C5H003Q01	-log [H⁺]
Fluoride	108	0.18	C5H003Q01	0.27	C5H003Q01	0.32	C5H003Q01	0.41	C5H003Q01	mg l^-1
NO3(N)	108	0.02	C5H003Q01	0.259	C5H003Q01	1.348	C5H003Q01	3.878	C5H003Q01	mg l^-1
Sulphate	108	6.8	C5H003Q01	22	C5H003Q01	39.9	C5H003Q01	79	C5H003Q01	mg l^-1
Chloride	108	5	C5H003Q01	25.1	C5H003Q01	49.4	C5H003Q01	66.4	C5H003Q01	mg l^-1
Sodium	108	8.7	C5H003Q01	30.9	C5H003Q01	57.7	C5H003Q01	87.5	C5H003Q01	mg l^-1
Magnesium	108	2	C5H003Q01	14.3	C5H003Q01	24.3	C5H003Q01	29.6	C5H003Q01	mg l^-1
TDS	108	139	C5H003Q01	319	C5H003Q01	513	C5H003Q01	611	C5H003Q01	mg l^-1
Conductivity	108	13	C5H003Q01	41.4	C5H003Q01	66.4	C5H003Q01	79.8	C5H003Q01	mS m^-1

(18) Catchment C52F: Total number of "H...Q" (flow gauging, quality) stations = 4.

Station total n
samples description map
code

C5H054Q01 352 at Bishops Glen on Renosterspruit 20

C5H006Q01 17 at Bishops Glen on Renosterspruit 21

C5H025Q01 sewage Bloemspruit Sewage Effluent at Sunnyside none

C5H007Q01 347 at Shannon Valley on Renosterspruit 22

Station	total n samples	description	map code
C5H054Q01	352	at Bishops Glen on Renosterspruit	20
C5H006Q01	17	at Bishops Glen on Renosterspruit	21
C5H025Q01	sewage	Bloemspruit Sewage Effluent at Sunnyside	none
C5H007Q01	347	at Shannon Valley on Renosterspruit	22

C52F - Stations used: 3, Samples selected: 192 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 192 6.93 C5H054Q01 8.04 C5H054Q01 8.38 C5H054Q01 9.24 C5H007Q01 -log [H⁺]

Fluoride 192 0.17 C5H054Q01 0.26 C5H007Q01 0.32 C5H054Q01 0.41 C5H007Q01 mg l^-1

NO3(N) 192 0.02 C5H054Q01 3.401 C5H054Q01 19.229 C5H054Q01 38.309 C5H007Q01 mg l^-1

Sulphate 192 10.7 C5H007Q01 40.9 C5H007Q01 54.6 C5H054Q01 67.2 C5H054Q01 mg l^-1

Chloride 192 5 C5H007Q01 59.1 C5H054Q01 77.2 C5H007Q01 101.6 C5H054Q01 mg l^-1

Sodium 192 10.9 C5H054Q01 52.7 C5H054Q01 69.9 C5H007Q01 86.1 C5H054Q01 mg l^-1

Magnesium 192 4.6 C5H007Q01 18.3 C5H007Q01 27.2 C5H054Q01 41.6 C5H054Q01 mg l^-1

TDS 192 154 C5H054Q01 460 C5H054Q01 577 C5H007Q01 782 C5H054Q01 mg l^-1

Conductivity 192 20 C5H007Q01 65.3 C5H007Q01 78.5 C5H054Q01 99.5 C5H054Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C52F n=192 Class 2: I(TDS EC) II(NO3)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	192	6.93	C5H054Q01	8.04	C5H054Q01	8.38	C5H054Q01	9.24	C5H007Q01	-log [H⁺]
Fluoride	192	0.17	C5H054Q01	0.26	C5H007Q01	0.32	C5H054Q01	0.41	C5H007Q01	mg l^-1
NO3(N)	192	0.02	C5H054Q01	3.401	C5H054Q01	19.229	C5H054Q01	38.309	C5H007Q01	mg l^-1
Sulphate	192	10.7	C5H007Q01	40.9	C5H007Q01	54.6	C5H054Q01	67.2	C5H054Q01	mg l^-1
Chloride	192	5	C5H007Q01	59.1	C5H054Q01	77.2	C5H007Q01	101.6	C5H054Q01	mg l^-1
Sodium	192	10.9	C5H054Q01	52.7	C5H054Q01	69.9	C5H007Q01	86.1	C5H054Q01	mg l^-1
Magnesium	192	4.6	C5H007Q01	18.3	C5H007Q01	27.2	C5H054Q01	41.6	C5H054Q01	mg l^-1
TDS	192	154	C5H054Q01	460	C5H054Q01	577	C5H007Q01	782	C5H054Q01	mg l^-1
Conductivity	192	20	C5H007Q01	65.3	C5H007Q01	78.5	C5H054Q01	99.5	C5H054Q01	mS m^-1

(19) Catchment C52G: Total number of "H...Q" (flow gauging, quality) stations = 4.

Station total n
samples description map
code

C5H015Q01 128 at Stoomhoek on Modder Rivier 23

C5H039Q01 dam Krugersdrift Dam on Modder River: Down S none

C5H053Q01 340 Modder River at Glen 24

C5H054Q01 352 at Bishops Glen on Renosterspruit 25

Station	total n samples	description	map code
C5H015Q01	128	at Stoomhoek on Modder Rivier	23
C5H039Q01	dam	Krugersdrift Dam on Modder River: Down S	none
C5H053Q01	340	Modder River at Glen	24
C5H054Q01	352	at Bishops Glen on Renosterspruit	25

C52G - Stations used: 3, Samples selected: 166 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 166 6.93 C5H054Q01 8.16 C5H053Q01 8.44 C5H053Q01 8.85 C5H053Q01 -log [H⁺]

Fluoride 166 0.17 C5H054Q01 0.24 C5H053Q01 0.28 C5H054Q01 0.33 C5H053Q01 mg l^-1

NO3(N) 166 0.02 C5H054Q01 1.855 C5H054Q01 6.351 C5H053Q01 19.571 C5H054Q01 mg l^-1

Sulphate 166 8.2 C5H053Q01 39.5 C5H054Q01 56.1 C5H053Q01 67.2 C5H054Q01 mg l^-1

Chloride 166 5 C5H053Q01 51.5 C5H054Q01 72.3 C5H053Q01 101.6 C5H054Q01 mg l^-1

Sodium 166 8.9 C5H053Q01 43.8 C5H054Q01 63 C5H053Q01 86.1 C5H054Q01 mg l^-1

Magnesium 166 4.7 C5H053Q01 17.6 C5H054Q01 27.3 C5H054Q01 41.6 C5H054Q01 mg l^-1

TDS 166 137 C5H053Q01 416 C5H054Q01 558 C5H054Q01 782 C5H054Q01 mg l^-1

Conductivity 166 16.2 C5H053Q01 58.2 C5H054Q01 76.1 C5H054Q01 99.5 C5H054Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C52G n=166 Class 1: I(NO3 TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	166	6.93	C5H054Q01	8.16	C5H053Q01	8.44	C5H053Q01	8.85	C5H053Q01	-log [H⁺]
Fluoride	166	0.17	C5H054Q01	0.24	C5H053Q01	0.28	C5H054Q01	0.33	C5H053Q01	mg l^-1
NO3(N)	166	0.02	C5H054Q01	1.855	C5H054Q01	6.351	C5H053Q01	19.571	C5H054Q01	mg l^-1
Sulphate	166	8.2	C5H053Q01	39.5	C5H054Q01	56.1	C5H053Q01	67.2	C5H054Q01	mg l^-1
Chloride	166	5	C5H053Q01	51.5	C5H054Q01	72.3	C5H053Q01	101.6	C5H054Q01	mg l^-1
Sodium	166	8.9	C5H053Q01	43.8	C5H054Q01	63	C5H053Q01	86.1	C5H054Q01	mg l^-1
Magnesium	166	4.7	C5H053Q01	17.6	C5H054Q01	27.3	C5H054Q01	41.6	C5H054Q01	mg l^-1
TDS	166	137	C5H053Q01	416	C5H054Q01	558	C5H054Q01	782	C5H054Q01	mg l^-1
Conductivity	166	16.2	C5H053Q01	58.2	C5H054Q01	76.1	C5H054Q01	99.5	C5H054Q01	mS m^-1

(20) Catchment C52H: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C5H039Q01 dam Krugersdrift Dam on Modder River: Down S none

Station	total n samples	description	map code
C5H039Q01	dam	Krugersdrift Dam on Modder River: Down S	none

C52H - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(23) Catchment C52L: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C5H035Q01 516 @ Twee Rivier D-S Twee Rivier on Modder 26

C5H018Q01 563 Modder River at Tweerivier 27

Station	total n samples	description	map code
C5H035Q01	516	@ Twee Rivier D-S Twee Rivier on Modder	26
C5H018Q01	563	Modder River at Tweerivier	27

C52L - Stations used: 2, Samples selected: 135 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 135 7.1 C5H035Q01 8.07 C5H035Q01 8.25 C5H035Q01 8.35 C5H035Q01 -log [H⁺]

Fluoride 135 0.1 C5H035Q01 0.22 C5H035Q01 0.29 C5H035Q01 0.33 C5H035Q01 mg l^-1

NO3(N) 135 0.02 C5H018Q01 0.276 C5H035Q01 1.345 C5H035Q01 4.417 C5H035Q01 mg l^-1

Sulphate 135 8.1 C5H035Q01 38.6 C5H035Q01 118 C5H035Q01 172.3 C5H035Q01 mg l^-1

Chloride 135 2.5 C5H035Q01 46.7 C5H035Q01 165.8 C5H035Q01 238.5 C5H035Q01 mg l^-1

Sodium 135 6.3 C5H035Q01 32.2 C5H035Q01 87.8 C5H035Q01 138.1 C5H035Q01 mg l^-1

Magnesium 135 5.1 C5H035Q01 16.7 C5H035Q01 38.9 C5H035Q01 51.8 C5H035Q01 mg l^-1

TDS 135 147 C5H035Q01 315 C5H035Q01 675 C5H035Q01 885 C5H035Q01 mg l^-1

Conductivity 135 19.2 C5H035Q01 47.2 C5H035Q01 102.4 C5H035Q01 141 C5H035Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C52L n=135 Class 1: I(Cl Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	135	7.1	C5H035Q01	8.07	C5H035Q01	8.25	C5H035Q01	8.35	C5H035Q01	-log [H⁺]
Fluoride	135	0.1	C5H035Q01	0.22	C5H035Q01	0.29	C5H035Q01	0.33	C5H035Q01	mg l^-1
NO3(N)	135	0.02	C5H018Q01	0.276	C5H035Q01	1.345	C5H035Q01	4.417	C5H035Q01	mg l^-1
Sulphate	135	8.1	C5H035Q01	38.6	C5H035Q01	118	C5H035Q01	172.3	C5H035Q01	mg l^-1
Chloride	135	2.5	C5H035Q01	46.7	C5H035Q01	165.8	C5H035Q01	238.5	C5H035Q01	mg l^-1
Sodium	135	6.3	C5H035Q01	32.2	C5H035Q01	87.8	C5H035Q01	138.1	C5H035Q01	mg l^-1
Magnesium	135	5.1	C5H035Q01	16.7	C5H035Q01	38.9	C5H035Q01	51.8	C5H035Q01	mg l^-1
TDS	135	147	C5H035Q01	315	C5H035Q01	675	C5H035Q01	885	C5H035Q01	mg l^-1
Conductivity	135	19.2	C5H035Q01	47.2	C5H035Q01	102.4	C5H035Q01	141	C5H035Q01	mS m^-1

(25) Catchment C91D: Total number of "H...Q" (flow gauging, quality) stations = 3.

Station total n
samples description map
code

C9H008Q01 674 Vaalharts Barrage on Vaal River: Down St 28

C9H018Q01 163 Vaalharts Barrage on Vaal River: Right C 29

C9H003Q01 9 Vaal River at Droogfontein-Riverton 30

Station	total n samples	description	map code
C9H008Q01	674	Vaalharts Barrage on Vaal River: Down St	28
C9H018Q01	163	Vaalharts Barrage on Vaal River: Right C	29
C9H003Q01	9	Vaal River at Droogfontein-Riverton	30

C91D - Stations used: 3, Samples selected: 189 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 189 7.37 C9H018Q01 8.1 C9H008Q01 8.29 C9H008Q01 8.6 C9H008Q01 -log [H⁺]

Fluoride 189 0.05 C9H018Q01 0.36 C9H008Q01 0.43 C9H018Q01 0.5 C9H008Q01 mg l^-1

NO3(N) 189 0.02 C9H018Q01 0.04 C9H018Q01 0.138 C9H008Q01 0.593 C9H008Q01 mg l^-1

Sulphate 189 55.9 C9H018Q01 139.7 C9H008Q01 203 C9H018Q01 265.4 C9H008Q01 mg l^-1

Chloride 189 22.2 C9H008Q01 56.1 C9H018Q01 83.8 C9H008Q01 107 C9H018Q01 mg l^-1

Sodium 189 23 C9H018Q01 57.6 C9H008Q01 80.6 C9H018Q01 100.8 C9H008Q01 mg l^-1

Magnesium 189 13.7 C9H008Q01 24.4 C9H018Q01 32.6 C9H018Q01 37.8 C9H008Q01 mg l^-1

TDS 189 276 C9H008Q01 472 C9H008Q01 638 C9H018Q01 738 C9H008Q01 mg l^-1

Conductivity 189 37.9 C9H008Q01 72 C9H008Q01 91.9 C9H018Q01 102.2 C9H008Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C91D n=189 Class 1: I(SO4 Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	189	7.37	C9H018Q01	8.1	C9H008Q01	8.29	C9H008Q01	8.6	C9H008Q01	-log [H⁺]
Fluoride	189	0.05	C9H018Q01	0.36	C9H008Q01	0.43	C9H018Q01	0.5	C9H008Q01	mg l^-1
NO3(N)	189	0.02	C9H018Q01	0.04	C9H018Q01	0.138	C9H008Q01	0.593	C9H008Q01	mg l^-1
Sulphate	189	55.9	C9H018Q01	139.7	C9H008Q01	203	C9H018Q01	265.4	C9H008Q01	mg l^-1
Chloride	189	22.2	C9H008Q01	56.1	C9H018Q01	83.8	C9H008Q01	107	C9H018Q01	mg l^-1
Sodium	189	23	C9H018Q01	57.6	C9H008Q01	80.6	C9H018Q01	100.8	C9H008Q01	mg l^-1
Magnesium	189	13.7	C9H008Q01	24.4	C9H018Q01	32.6	C9H018Q01	37.8	C9H008Q01	mg l^-1
TDS	189	276	C9H008Q01	472	C9H008Q01	638	C9H018Q01	738	C9H008Q01	mg l^-1
Conductivity	189	37.9	C9H008Q01	72	C9H008Q01	91.9	C9H018Q01	102.2	C9H008Q01	mS m^-1

(26) Catchment C91E: Total number of "H...Q" (flow gauging, quality) stations = 3.

Station total n
samples description map
code

C9H010Q01 1941 Vaal River at Mozib-Gamagara 31

C9H003Q01 9 Vaal River at Droogfontein-Riverton 32

C9H009Q01 1317 Vaal River at De Hoop 33

Station	total n samples	description	map code
C9H010Q01	1941	Vaal River at Mozib-Gamagara	31
C9H003Q01	9	Vaal River at Droogfontein-Riverton	32
C9H009Q01	1317	Vaal River at De Hoop	33

C91E - Stations used: 3, Samples selected: 85 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 85 7.21 C9H009Q01 8.2 C9H009Q01 8.38 C9H009Q01 8.47 C9H009Q01 -log [H⁺]

Fluoride 85 0.24 C9H009Q01 0.35 C9H009Q01 0.48 C9H009Q01 0.62 C9H009Q01 mg l^-1

NO3(N) 85 0.02 C9H009Q01 0.042 C9H009Q01 0.095 C9H009Q01 0.558 C9H009Q01 mg l^-1

Sulphate 85 60.4 C9H009Q01 130.8 C9H009Q01 239.7 C9H009Q01 344.9 C9H009Q01 mg l^-1

Chloride 85 21.8 C9H009Q01 67 C9H009Q01 136.1 C9H009Q01 177 C9H009Q01 mg l^-1

Sodium 85 23.5 C9H009Q01 59.6 C9H009Q01 120 C9H009Q01 154.6 C9H009Q01 mg l^-1

Magnesium 85 12.6 C9H009Q01 28.7 C9H009Q01 52.6 C9H009Q01 62.1 C9H009Q01 mg l^-1

TDS 85 270 C9H009Q01 509 C9H009Q01 773 C9H009Q01 950 C9H009Q01 mg l^-1

Conductivity 85 39.1 C9H009Q01 75.2 C9H009Q01 117.3 C9H009Q01 144 C9H009Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C91E n=85 Class 1: I(SO4 Cl Na Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	85	7.21	C9H009Q01	8.2	C9H009Q01	8.38	C9H009Q01	8.47	C9H009Q01	-log [H⁺]
Fluoride	85	0.24	C9H009Q01	0.35	C9H009Q01	0.48	C9H009Q01	0.62	C9H009Q01	mg l^-1
NO3(N)	85	0.02	C9H009Q01	0.042	C9H009Q01	0.095	C9H009Q01	0.558	C9H009Q01	mg l^-1
Sulphate	85	60.4	C9H009Q01	130.8	C9H009Q01	239.7	C9H009Q01	344.9	C9H009Q01	mg l^-1
Chloride	85	21.8	C9H009Q01	67	C9H009Q01	136.1	C9H009Q01	177	C9H009Q01	mg l^-1
Sodium	85	23.5	C9H009Q01	59.6	C9H009Q01	120	C9H009Q01	154.6	C9H009Q01	mg l^-1
Magnesium	85	12.6	C9H009Q01	28.7	C9H009Q01	52.6	C9H009Q01	62.1	C9H009Q01	mg l^-1
TDS	85	270	C9H009Q01	509	C9H009Q01	773	C9H009Q01	950	C9H009Q01	mg l^-1
Conductivity	85	39.1	C9H009Q01	75.2	C9H009Q01	117.3	C9H009Q01	144	C9H009Q01	mS m^-1

(27) Catchment C92B: Total number of "H...Q" (flow gauging, quality) stations = 7.

Station total n
samples description map
code

C9H023Q01 42 Vaal River at Schmidtsdrift Flood Secti 34

C9H024Q01 169 at Schmidtsdrift Weir on Vaal River 35

C9H019Q01 597 Douglas Barrage on Vaal River: Artherton 36

C9H017Q01 600 Douglas Barrage on Vaal River: Bucklands 37

C9H016Q01 canal Vaal River: Left Bank Canal at St Claire none

C9H007Q01 130 Vaal River at St Claire-Douglas 38

C9H025Q01 canal Orange-Vaal Canal at St Clair-Douglas BA none

Station	total n samples	description	map code
C9H023Q01	42	Vaal River at Schmidtsdrift Flood Secti	34
C9H024Q01	169	at Schmidtsdrift Weir on Vaal River	35
C9H019Q01	597	Douglas Barrage on Vaal River: Artherton	36
C9H017Q01	600	Douglas Barrage on Vaal River: Bucklands	37
C9H016Q01	canal	Vaal River: Left Bank Canal at St Claire	none
C9H007Q01	130	Vaal River at St Claire-Douglas	38
C9H025Q01	canal	Orange-Vaal Canal at St Clair-Douglas BA	none

C92B - Stations used: 5, Samples selected: 532 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 532 7.33 C9H017Q01 8.22 C9H019Q01 8.46 C9H017Q01 8.87 C9H019Q01 -log [H⁺]

Fluoride 532 0.05 C9H019Q01 0.33 C9H019Q01 0.45 C9H024Q01 0.61 C9H024Q01 mg l^-1

NO3(N) 532 0.02 C9H017Q01 0.119 C9H017Q01 0.282 C9H017Q01 0.635 C9H019Q01 mg l^-1

Sulphate 532 10.8 C9H017Q01 151.4 C9H024Q01 236 C9H017Q01 368.9 C9H017Q01 mg l^-1

Chloride 532 5.9 C9H017Q01 105.1 C9H019Q01 167.5 C9H024Q01 263.9 C9H019Q01 mg l^-1

Sodium 532 8.1 C9H017Q01 83.9 C9H019Q01 132.7 C9H019Q01 179.2 C9H017Q01 mg l^-1

Magnesium 532 7.2 C9H017Q01 35.6 C9H017Q01 53.2 C9H017Q01 73.5 C9H017Q01 mg l^-1

TDS 532 163 C9H017Q01 596 C9H019Q01 814 C9H017Q01 1122 C9H017Q01 mg l^-1

Conductivity 532 21.8 C9H017Q01 89.5 C9H024Q01 123.7 C9H019Q01 167 C9H017Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C92B n=532 Class 1: I(SO4 Cl Na Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	532	7.33	C9H017Q01	8.22	C9H019Q01	8.46	C9H017Q01	8.87	C9H019Q01	-log [H⁺]
Fluoride	532	0.05	C9H019Q01	0.33	C9H019Q01	0.45	C9H024Q01	0.61	C9H024Q01	mg l^-1
NO3(N)	532	0.02	C9H017Q01	0.119	C9H017Q01	0.282	C9H017Q01	0.635	C9H019Q01	mg l^-1
Sulphate	532	10.8	C9H017Q01	151.4	C9H024Q01	236	C9H017Q01	368.9	C9H017Q01	mg l^-1
Chloride	532	5.9	C9H017Q01	105.1	C9H019Q01	167.5	C9H024Q01	263.9	C9H019Q01	mg l^-1
Sodium	532	8.1	C9H017Q01	83.9	C9H019Q01	132.7	C9H019Q01	179.2	C9H017Q01	mg l^-1
Magnesium	532	7.2	C9H017Q01	35.6	C9H017Q01	53.2	C9H017Q01	73.5	C9H017Q01	mg l^-1
TDS	532	163	C9H017Q01	596	C9H019Q01	814	C9H017Q01	1122	C9H017Q01	mg l^-1
Conductivity	532	21.8	C9H017Q01	89.5	C9H024Q01	123.7	C9H019Q01	167	C9H017Q01	mS m^-1

(28) Catchment C92C: Total number of "H...Q" (flow gauging, quality) stations = 6.

Station total n
samples description map
code

C9H019Q01 597 Douglas Barrage on Vaal River: Artherton 39

C9H017Q01 600 Douglas Barrage on Vaal River: Bucklands 40

C9H016Q01 canal Vaal River: Left Bank Canal at St Claire none

C9H007Q01 130 Vaal River at St Claire-Douglas 41

C9H025Q01 canal Orange-Vaal Canal at St Clair-Douglas BA none

C9H011Q01 72 Vaal River at Douglas Bridge 42

Station	total n samples	description	map code
C9H019Q01	597	Douglas Barrage on Vaal River: Artherton	39
C9H017Q01	600	Douglas Barrage on Vaal River: Bucklands	40
C9H016Q01	canal	Vaal River: Left Bank Canal at St Claire	none
C9H007Q01	130	Vaal River at St Claire-Douglas	41
C9H025Q01	canal	Orange-Vaal Canal at St Clair-Douglas BA	none
C9H011Q01	72	Vaal River at Douglas Bridge	42

C92C - Stations used: 4, Samples selected: 464 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 464 7.33 C9H017Q01 8.22 C9H017Q01 8.47 C9H017Q01 8.87 C9H019Q01 -log [H⁺]

Fluoride 464 0.05 C9H019Q01 0.32 C9H017Q01 0.43 C9H017Q01 0.55 C9H019Q01 mg l^-1

NO3(N) 464 0.02 C9H017Q01 0.147 C9H019Q01 0.291 C9H019Q01 0.635 C9H019Q01 mg l^-1

Sulphate 464 10.8 C9H017Q01 147.4 C9H019Q01 225.2 C9H017Q01 368.9 C9H017Q01 mg l^-1

Chloride 464 5.9 C9H017Q01 112.2 C9H017Q01 172.9 C9H017Q01 263.9 C9H019Q01 mg l^-1

Sodium 464 8.1 C9H017Q01 86.1 C9H017Q01 133 C9H017Q01 179.2 C9H017Q01 mg l^-1

Magnesium 464 7.2 C9H017Q01 35 C9H019Q01 50.9 C9H017Q01 73.5 C9H017Q01 mg l^-1

TDS 464 163 C9H017Q01 596 C9H019Q01 808 C9H019Q01 1122 C9H017Q01 mg l^-1

Conductivity 464 21.8 C9H017Q01 89.8 C9H019Q01 123.5 C9H019Q01 167 C9H017Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C92C n=464 Class 1: I(SO4 Cl Na Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	464	7.33	C9H017Q01	8.22	C9H017Q01	8.47	C9H017Q01	8.87	C9H019Q01	-log [H⁺]
Fluoride	464	0.05	C9H019Q01	0.32	C9H017Q01	0.43	C9H017Q01	0.55	C9H019Q01	mg l^-1
NO3(N)	464	0.02	C9H017Q01	0.147	C9H019Q01	0.291	C9H019Q01	0.635	C9H019Q01	mg l^-1
Sulphate	464	10.8	C9H017Q01	147.4	C9H019Q01	225.2	C9H017Q01	368.9	C9H017Q01	mg l^-1
Chloride	464	5.9	C9H017Q01	112.2	C9H017Q01	172.9	C9H017Q01	263.9	C9H019Q01	mg l^-1
Sodium	464	8.1	C9H017Q01	86.1	C9H017Q01	133	C9H017Q01	179.2	C9H017Q01	mg l^-1
Magnesium	464	7.2	C9H017Q01	35	C9H019Q01	50.9	C9H017Q01	73.5	C9H017Q01	mg l^-1
TDS	464	163	C9H017Q01	596	C9H019Q01	808	C9H019Q01	1122	C9H017Q01	mg l^-1
Conductivity	464	21.8	C9H017Q01	89.8	C9H019Q01	123.5	C9H019Q01	167	C9H017Q01	mS m^-1

(29) Catchment D12A: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D1H009Q01 737 Orange River at Oranjedraai 43

Station	total n samples	description	map code
D1H009Q01	737	Orange River at Oranjedraai	43

D12A - Stations used: 1, Samples selected: 75 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 75 6.35 D1H009Q01 7.94 D1H009Q01 8.16 D1H009Q01 8.25 D1H009Q01 -log [H⁺]

Fluoride 75 0.05 D1H009Q01 0.14 D1H009Q01 0.2 D1H009Q01 0.29 D1H009Q01 mg l^-1

NO3(N) 75 0.02 D1H009Q01 0.207 D1H009Q01 0.391 D1H009Q01 0.543 D1H009Q01 mg l^-1

Sulphate 75 2 D1H009Q01 9.5 D1H009Q01 12.3 D1H009Q01 24.7 D1H009Q01 mg l^-1

Chloride 75 2 D1H009Q01 5 D1H009Q01 5 D1H009Q01 14.3 D1H009Q01 mg l^-1

Sodium 75 3.2 D1H009Q01 4.6 D1H009Q01 6 D1H009Q01 22.4 D1H009Q01 mg l^-1

Magnesium 75 3.9 D1H009Q01 6 D1H009Q01 9.1 D1H009Q01 16.4 D1H009Q01 mg l^-1

TDS 75 73 D1H009Q01 129 D1H009Q01 163 D1H009Q01 306 D1H009Q01 mg l^-1

Conductivity 75 11.2 D1H009Q01 16.7 D1H009Q01 21.4 D1H009Q01 39.9 D1H009Q01 mS m^-1

Summary of classification: D12A n=75 Class 0

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	75	6.35	D1H009Q01	7.94	D1H009Q01	8.16	D1H009Q01	8.25	D1H009Q01	-log [H⁺]
Fluoride	75	0.05	D1H009Q01	0.14	D1H009Q01	0.2	D1H009Q01	0.29	D1H009Q01	mg l^-1
NO3(N)	75	0.02	D1H009Q01	0.207	D1H009Q01	0.391	D1H009Q01	0.543	D1H009Q01	mg l^-1
Sulphate	75	2	D1H009Q01	9.5	D1H009Q01	12.3	D1H009Q01	24.7	D1H009Q01	mg l^-1
Chloride	75	2	D1H009Q01	5	D1H009Q01	5	D1H009Q01	14.3	D1H009Q01	mg l^-1
Sodium	75	3.2	D1H009Q01	4.6	D1H009Q01	6	D1H009Q01	22.4	D1H009Q01	mg l^-1
Magnesium	75	3.9	D1H009Q01	6	D1H009Q01	9.1	D1H009Q01	16.4	D1H009Q01	mg l^-1
TDS	75	73	D1H009Q01	129	D1H009Q01	163	D1H009Q01	306	D1H009Q01	mg l^-1
Conductivity	75	11.2	D1H009Q01	16.7	D1H009Q01	21.4	D1H009Q01	39.9	D1H009Q01	mS m^-1

(45) Catchment D13L: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D1H011Q01 737 Kraai River at Roodewal 44

Station	total n samples	description	map code
D1H011Q01	737	Kraai River at Roodewal	44

D13L - Stations used: 1, Samples selected: 32 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 32 7.19 D1H011Q01 8.14 D1H011Q01 8.34 D1H011Q01 8.54 D1H011Q01 -log [H⁺]

Fluoride 32 0.1 D1H011Q01 0.14 D1H011Q01 0.18 D1H011Q01 0.26 D1H011Q01 mg l^-1

NO3(N) 32 0.02 D1H011Q01 0.055 D1H011Q01 0.118 D1H011Q01 0.165 D1H011Q01 mg l^-1

Sulphate 32 5 D1H011Q01 9.8 D1H011Q01 13.4 D1H011Q01 18.7 D1H011Q01 mg l^-1

Chloride 32 2.5 D1H011Q01 5 D1H011Q01 5.9 D1H011Q01 10.5 D1H011Q01 mg l^-1

Sodium 32 3.6 D1H011Q01 6.4 D1H011Q01 7.6 D1H011Q01 9.2 D1H011Q01 mg l^-1

Magnesium 32 5.3 D1H011Q01 10.6 D1H011Q01 15.4 D1H011Q01 24.7 D1H011Q01 mg l^-1

TDS 32 109 D1H011Q01 195 D1H011Q01 256 D1H011Q01 271 D1H011Q01 mg l^-1

Conductivity 32 13.5 D1H011Q01 24.5 D1H011Q01 32.7 D1H011Q01 36.9 D1H011Q01 mS m^-1

Summary of classification: D13L n=32 Class 0

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	32	7.19	D1H011Q01	8.14	D1H011Q01	8.34	D1H011Q01	8.54	D1H011Q01	-log [H⁺]
Fluoride	32	0.1	D1H011Q01	0.14	D1H011Q01	0.18	D1H011Q01	0.26	D1H011Q01	mg l^-1
NO3(N)	32	0.02	D1H011Q01	0.055	D1H011Q01	0.118	D1H011Q01	0.165	D1H011Q01	mg l^-1
Sulphate	32	5	D1H011Q01	9.8	D1H011Q01	13.4	D1H011Q01	18.7	D1H011Q01	mg l^-1
Chloride	32	2.5	D1H011Q01	5	D1H011Q01	5.9	D1H011Q01	10.5	D1H011Q01	mg l^-1
Sodium	32	3.6	D1H011Q01	6.4	D1H011Q01	7.6	D1H011Q01	9.2	D1H011Q01	mg l^-1
Magnesium	32	5.3	D1H011Q01	10.6	D1H011Q01	15.4	D1H011Q01	24.7	D1H011Q01	mg l^-1
TDS	32	109	D1H011Q01	195	D1H011Q01	256	D1H011Q01	271	D1H011Q01	mg l^-1
Conductivity	32	13.5	D1H011Q01	24.5	D1H011Q01	32.7	D1H011Q01	36.9	D1H011Q01	mS m^-1

(46) Catchment D13M: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

D1H007Q01 82 Kraai River at Buffels Vallei-Sunnyside 45

D1H011Q01 737 Kraai River at Roodewal 46

Station	total n samples	description	map code
D1H007Q01	82	Kraai River at Buffels Vallei-Sunnyside	45
D1H011Q01	737	Kraai River at Roodewal	46

D13M - Stations used: 2, Samples selected: 32 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 32 7.19 D1H011Q01 8.14 D1H011Q01 8.34 D1H011Q01 8.54 D1H011Q01 -log [H⁺]

Fluoride 32 0.1 D1H011Q01 0.14 D1H011Q01 0.18 D1H011Q01 0.26 D1H011Q01 mg l^-1

NO3(N) 32 0.02 D1H011Q01 0.055 D1H011Q01 0.118 D1H011Q01 0.165 D1H011Q01 mg l^-1

Sulphate 32 5 D1H011Q01 9.8 D1H011Q01 13.4 D1H011Q01 18.7 D1H011Q01 mg l^-1

Chloride 32 2.5 D1H011Q01 5 D1H011Q01 5.9 D1H011Q01 10.5 D1H011Q01 mg l^-1

Sodium 32 3.6 D1H011Q01 6.4 D1H011Q01 7.6 D1H011Q01 9.2 D1H011Q01 mg l^-1

Magnesium 32 5.3 D1H011Q01 10.6 D1H011Q01 15.4 D1H011Q01 24.7 D1H011Q01 mg l^-1

TDS 32 109 D1H011Q01 195 D1H011Q01 256 D1H011Q01 271 D1H011Q01 mg l^-1

Conductivity 32 13.5 D1H011Q01 24.5 D1H011Q01 32.7 D1H011Q01 36.9 D1H011Q01 mS m^-1

Summary of classification: D13M n=32 Class 0

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	32	7.19	D1H011Q01	8.14	D1H011Q01	8.34	D1H011Q01	8.54	D1H011Q01	-log [H⁺]
Fluoride	32	0.1	D1H011Q01	0.14	D1H011Q01	0.18	D1H011Q01	0.26	D1H011Q01	mg l^-1
NO3(N)	32	0.02	D1H011Q01	0.055	D1H011Q01	0.118	D1H011Q01	0.165	D1H011Q01	mg l^-1
Sulphate	32	5	D1H011Q01	9.8	D1H011Q01	13.4	D1H011Q01	18.7	D1H011Q01	mg l^-1
Chloride	32	2.5	D1H011Q01	5	D1H011Q01	5.9	D1H011Q01	10.5	D1H011Q01	mg l^-1
Sodium	32	3.6	D1H011Q01	6.4	D1H011Q01	7.6	D1H011Q01	9.2	D1H011Q01	mg l^-1
Magnesium	32	5.3	D1H011Q01	10.6	D1H011Q01	15.4	D1H011Q01	24.7	D1H011Q01	mg l^-1
TDS	32	109	D1H011Q01	195	D1H011Q01	256	D1H011Q01	271	D1H011Q01	mg l^-1
Conductivity	32	13.5	D1H011Q01	24.5	D1H011Q01	32.7	D1H011Q01	36.9	D1H011Q01	mS m^-1

(47) Catchment D14A: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D1H003Q01 1206 Orange River at Aliwal North 47

Station	total n samples	description	map code
D1H003Q01	1206	Orange River at Aliwal North	47

D14A - Stations used: 1, Samples selected: 35 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 35 6.57 D1H003Q01 8.02 D1H003Q01 8.22 D1H003Q01 8.37 D1H003Q01 -log [H⁺]

Fluoride 35 0.05 D1H003Q01 0.14 D1H003Q01 0.18 D1H003Q01 0.21 D1H003Q01 mg l^-1

NO3(N) 35 0.02 D1H003Q01 0.131 D1H003Q01 0.392 D1H003Q01 0.631 D1H003Q01 mg l^-1

Sulphate 35 2 D1H003Q01 9.1 D1H003Q01 11.5 D1H003Q01 14.1 D1H003Q01 mg l^-1

Chloride 35 2 D1H003Q01 5 D1H003Q01 5 D1H003Q01 6.3 D1H003Q01 mg l^-1

Sodium 35 3 D1H003Q01 4.7 D1H003Q01 6.6 D1H003Q01 8.6 D1H003Q01 mg l^-1

Magnesium 35 4 D1H003Q01 6.7 D1H003Q01 9.3 D1H003Q01 12.4 D1H003Q01 mg l^-1

TDS 35 83 D1H003Q01 137 D1H003Q01 178 D1H003Q01 214 D1H003Q01 mg l^-1

Conductivity 35 10.7 D1H003Q01 18 D1H003Q01 23.3 D1H003Q01 29.5 D1H003Q01 mS m^-1

Summary of classification: D14A n=35 Class 0

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	35	6.57	D1H003Q01	8.02	D1H003Q01	8.22	D1H003Q01	8.37	D1H003Q01	-log [H⁺]
Fluoride	35	0.05	D1H003Q01	0.14	D1H003Q01	0.18	D1H003Q01	0.21	D1H003Q01	mg l^-1
NO3(N)	35	0.02	D1H003Q01	0.131	D1H003Q01	0.392	D1H003Q01	0.631	D1H003Q01	mg l^-1
Sulphate	35	2	D1H003Q01	9.1	D1H003Q01	11.5	D1H003Q01	14.1	D1H003Q01	mg l^-1
Chloride	35	2	D1H003Q01	5	D1H003Q01	5	D1H003Q01	6.3	D1H003Q01	mg l^-1
Sodium	35	3	D1H003Q01	4.7	D1H003Q01	6.6	D1H003Q01	8.6	D1H003Q01	mg l^-1
Magnesium	35	4	D1H003Q01	6.7	D1H003Q01	9.3	D1H003Q01	12.4	D1H003Q01	mg l^-1
TDS	35	83	D1H003Q01	137	D1H003Q01	178	D1H003Q01	214	D1H003Q01	mg l^-1
Conductivity	35	10.7	D1H003Q01	18	D1H003Q01	23.3	D1H003Q01	29.5	D1H003Q01	mS m^-1

(48) Catchment D14B: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D1H010Q01 167 Stormberg Spruit at Molteno Commonage 48

Station	total n samples	description	map code
D1H010Q01	167	Stormberg Spruit at Molteno Commonage	48

D14B - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(49) Catchment D14C: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D1H010Q01 167 Stormberg Spruit at Molteno Commonage 49

Station	total n samples	description	map code
D1H010Q01	167	Stormberg Spruit at Molteno Commonage	49

D14C - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(51) Catchment D14E: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D1H001Q01 834 Wonderboom-Stormb..Spruit at Diepkloof-B 50

Station	total n samples	description	map code
D1H001Q01	834	Wonderboom-Stormb..Spruit at Diepkloof-B	50

D14E - Stations used: 1, Samples selected: 24 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 24 7.34 D1H001Q01 8.23 D1H001Q01 8.3 D1H001Q01 8.53 D1H001Q01 -log [H⁺]

Fluoride 24 0.25 D1H001Q01 0.37 D1H001Q01 0.42 D1H001Q01 0.59 D1H001Q01 mg l^-1

NO3(N) 24 0.02 D1H001Q01 0.69 D1H001Q01 4.075 D1H001Q01 9.44 D1H001Q01 mg l^-1

Sulphate 24 7.5 D1H001Q01 23.4 D1H001Q01 54.6 D1H001Q01 73.5 D1H001Q01 mg l^-1

Chloride 24 10.5 D1H001Q01 30.8 D1H001Q01 66.2 D1H001Q01 70.5 D1H001Q01 mg l^-1

Sodium 24 16.8 D1H001Q01 45.9 D1H001Q01 68.5 D1H001Q01 94.8 D1H001Q01 mg l^-1

Magnesium 24 11.5 D1H001Q01 25.8 D1H001Q01 39.8 D1H001Q01 45.8 D1H001Q01 mg l^-1

TDS 24 224 D1H001Q01 483 D1H001Q01 704 D1H001Q01 864 D1H001Q01 mg l^-1

Conductivity 24 29.7 D1H001Q01 61.7 D1H001Q01 85.8 D1H001Q01 98.4 D1H001Q01 mS m^-1

Summary of classification (consituents in each range in brackets): D14E n=24 Class 1: I(Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	24	7.34	D1H001Q01	8.23	D1H001Q01	8.3	D1H001Q01	8.53	D1H001Q01	-log [H⁺]
Fluoride	24	0.25	D1H001Q01	0.37	D1H001Q01	0.42	D1H001Q01	0.59	D1H001Q01	mg l^-1
NO3(N)	24	0.02	D1H001Q01	0.69	D1H001Q01	4.075	D1H001Q01	9.44	D1H001Q01	mg l^-1
Sulphate	24	7.5	D1H001Q01	23.4	D1H001Q01	54.6	D1H001Q01	73.5	D1H001Q01	mg l^-1
Chloride	24	10.5	D1H001Q01	30.8	D1H001Q01	66.2	D1H001Q01	70.5	D1H001Q01	mg l^-1
Sodium	24	16.8	D1H001Q01	45.9	D1H001Q01	68.5	D1H001Q01	94.8	D1H001Q01	mg l^-1
Magnesium	24	11.5	D1H001Q01	25.8	D1H001Q01	39.8	D1H001Q01	45.8	D1H001Q01	mg l^-1
TDS	24	224	D1H001Q01	483	D1H001Q01	704	D1H001Q01	864	D1H001Q01	mg l^-1
Conductivity	24	29.7	D1H001Q01	61.7	D1H001Q01	85.8	D1H001Q01	98.4	D1H001Q01	mS m^-1

(52) Catchment D14F: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D1H001Q01 834 Wonderboom-Stormb..Spruit at Diepkloof-B 51

Station	total n samples	description	map code
D1H001Q01	834	Wonderboom-Stormb..Spruit at Diepkloof-B	51

D14F - Stations used: 1, Samples selected: 24 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 24 7.34 D1H001Q01 8.23 D1H001Q01 8.3 D1H001Q01 8.53 D1H001Q01 -log [H⁺]

Fluoride 24 0.25 D1H001Q01 0.37 D1H001Q01 0.42 D1H001Q01 0.59 D1H001Q01 mg l^-1

NO3(N) 24 0.02 D1H001Q01 0.69 D1H001Q01 4.075 D1H001Q01 9.44 D1H001Q01 mg l^-1

Sulphate 24 7.5 D1H001Q01 23.4 D1H001Q01 54.6 D1H001Q01 73.5 D1H001Q01 mg l^-1

Chloride 24 10.5 D1H001Q01 30.8 D1H001Q01 66.2 D1H001Q01 70.5 D1H001Q01 mg l^-1

Sodium 24 16.8 D1H001Q01 45.9 D1H001Q01 68.5 D1H001Q01 94.8 D1H001Q01 mg l^-1

Magnesium 24 11.5 D1H001Q01 25.8 D1H001Q01 39.8 D1H001Q01 45.8 D1H001Q01 mg l^-1

TDS 24 224 D1H001Q01 483 D1H001Q01 704 D1H001Q01 864 D1H001Q01 mg l^-1

Conductivity 24 29.7 D1H001Q01 61.7 D1H001Q01 85.8 D1H001Q01 98.4 D1H001Q01 mS m^-1

Summary of classification (consituents in each range in brackets): D14F n=24 Class 1: I(Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	24	7.34	D1H001Q01	8.23	D1H001Q01	8.3	D1H001Q01	8.53	D1H001Q01	-log [H⁺]
Fluoride	24	0.25	D1H001Q01	0.37	D1H001Q01	0.42	D1H001Q01	0.59	D1H001Q01	mg l^-1
NO3(N)	24	0.02	D1H001Q01	0.69	D1H001Q01	4.075	D1H001Q01	9.44	D1H001Q01	mg l^-1
Sulphate	24	7.5	D1H001Q01	23.4	D1H001Q01	54.6	D1H001Q01	73.5	D1H001Q01	mg l^-1
Chloride	24	10.5	D1H001Q01	30.8	D1H001Q01	66.2	D1H001Q01	70.5	D1H001Q01	mg l^-1
Sodium	24	16.8	D1H001Q01	45.9	D1H001Q01	68.5	D1H001Q01	94.8	D1H001Q01	mg l^-1
Magnesium	24	11.5	D1H001Q01	25.8	D1H001Q01	39.8	D1H001Q01	45.8	D1H001Q01	mg l^-1
TDS	24	224	D1H001Q01	483	D1H001Q01	704	D1H001Q01	864	D1H001Q01	mg l^-1
Conductivity	24	29.7	D1H001Q01	61.7	D1H001Q01	85.8	D1H001Q01	98.4	D1H001Q01	mS m^-1

(57) Catchment D15G: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

D1H034Q01 4 Kornet Spruit at Maghaleen 52

D1H006Q01 772 Kornet Spruit at Maghaleen 53

Station	total n samples	description	map code
D1H034Q01	4	Kornet Spruit at Maghaleen	52
D1H006Q01	772	Kornet Spruit at Maghaleen	53

D15G - Stations used: 2, Samples selected: 65 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 65 6.58 D1H006Q01 8.06 D1H006Q01 8.24 D1H006Q01 8.54 D1H006Q01 -log [H⁺]

Fluoride 65 0.05 D1H006Q01 0.14 D1H006Q01 0.21 D1H006Q01 0.42 D1H006Q01 mg l^-1

NO3(N) 65 0.02 D1H006Q01 0.472 D1H006Q01 0.777 D1H006Q01 0.944 D1H006Q01 mg l^-1

Sulphate 65 5 D1H006Q01 11.9 D1H006Q01 14.9 D1H006Q01 19.1 D1H006Q01 mg l^-1

Chloride 65 2 D1H006Q01 5 D1H006Q01 5 D1H006Q01 6.3 D1H006Q01 mg l^-1

Sodium 65 3.4 D1H006Q01 5.9 D1H006Q01 6.9 D1H006Q01 9.7 D1H006Q01 mg l^-1

Magnesium 65 3.4 D1H006Q01 6.8 D1H006Q01 8.8 D1H006Q01 10.4 D1H006Q01 mg l^-1

TDS 65 81 D1H006Q01 148 D1H006Q01 181 D1H006Q01 193 D1H006Q01 mg l^-1

Conductivity 65 10.8 D1H006Q01 20.1 D1H006Q01 23.4 D1H006Q01 25 D1H006Q01 mS m^-1

Summary of classification: D15G n=65 Class 0

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	65	6.58	D1H006Q01	8.06	D1H006Q01	8.24	D1H006Q01	8.54	D1H006Q01	-log [H⁺]
Fluoride	65	0.05	D1H006Q01	0.14	D1H006Q01	0.21	D1H006Q01	0.42	D1H006Q01	mg l^-1
NO3(N)	65	0.02	D1H006Q01	0.472	D1H006Q01	0.777	D1H006Q01	0.944	D1H006Q01	mg l^-1
Sulphate	65	5	D1H006Q01	11.9	D1H006Q01	14.9	D1H006Q01	19.1	D1H006Q01	mg l^-1
Chloride	65	2	D1H006Q01	5	D1H006Q01	5	D1H006Q01	6.3	D1H006Q01	mg l^-1
Sodium	65	3.4	D1H006Q01	5.9	D1H006Q01	6.9	D1H006Q01	9.7	D1H006Q01	mg l^-1
Magnesium	65	3.4	D1H006Q01	6.8	D1H006Q01	8.8	D1H006Q01	10.4	D1H006Q01	mg l^-1
TDS	65	81	D1H006Q01	148	D1H006Q01	181	D1H006Q01	193	D1H006Q01	mg l^-1
Conductivity	65	10.8	D1H006Q01	20.1	D1H006Q01	23.4	D1H006Q01	25	D1H006Q01	mS m^-1

(58) Catchment D15H: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D1H034Q01 4 Kornet Spruit at Maghaleen 54

D15H - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(64) Catchment D21B: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D2H008Q01 2 Hololo River at Khukhune Lesotho G26 55

D21B - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(65) Catchment D21C: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D2H012Q01 494 Little Caledon River at The Populars 56

D21C - Stations used: 1, Samples selected: 30 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 30 7.36 D2H012Q01 8.24 D2H012Q01 8.41 D2H012Q01 8.52 D2H012Q01 -log [H⁺]

Fluoride 30 0.1 D2H012Q01 0.14 D2H012Q01 0.2 D2H012Q01 0.25 D2H012Q01 mg l^-1

NO3(N) 30 0.02 D2H012Q01 0.103 D2H012Q01 0.17 D2H012Q01 0.482 D2H012Q01 mg l^-1

Sulphate 30 7.9 D2H012Q01 14.8 D2H012Q01 17.1 D2H012Q01 21.5 D2H012Q01 mg l^-1

Chloride 30 4.8 D2H012Q01 5 D2H012Q01 9.5 D2H012Q01 10.5 D2H012Q01 mg l^-1

Sodium 30 5.5 D2H012Q01 9.6 D2H012Q01 12.9 D2H012Q01 16.9 D2H012Q01 mg l^-1

Magnesium 30 7.2 D2H012Q01 12.4 D2H012Q01 16.5 D2H012Q01 20 D2H012Q01 mg l^-1

TDS 30 144 D2H012Q01 232 D2H012Q01 309 D2H012Q01 336 D2H012Q01 mg l^-1

Conductivity 30 18.2 D2H012Q01 30.1 D2H012Q01 38.5 D2H012Q01 43 D2H012Q01 mS m^-1

Summary of classification: D21C n=30 Class 0

(67) Catchment D21E: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D2H012Q01 494 Little Caledon River at The Populars 57

D21E - Stations used: 1, Samples selected: 30 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 30 7.36 D2H012Q01 8.24 D2H012Q01 8.41 D2H012Q01 8.52 D2H012Q01 -log [H⁺]

Fluoride 30 0.1 D2H012Q01 0.14 D2H012Q01 0.2 D2H012Q01 0.25 D2H012Q01 mg l^-1

NO3(N) 30 0.02 D2H012Q01 0.103 D2H012Q01 0.17 D2H012Q01 0.482 D2H012Q01 mg l^-1

Sulphate 30 7.9 D2H012Q01 14.8 D2H012Q01 17.1 D2H012Q01 21.5 D2H012Q01 mg l^-1

Chloride 30 4.8 D2H012Q01 5 D2H012Q01 9.5 D2H012Q01 10.5 D2H012Q01 mg l^-1

Sodium 30 5.5 D2H012Q01 9.6 D2H012Q01 12.9 D2H012Q01 16.9 D2H012Q01 mg l^-1

Magnesium 30 7.2 D2H012Q01 12.4 D2H012Q01 16.5 D2H012Q01 20 D2H012Q01 mg l^-1

TDS 30 144 D2H012Q01 232 D2H012Q01 309 D2H012Q01 336 D2H012Q01 mg l^-1

Conductivity 30 18.2 D2H012Q01 30.1 D2H012Q01 38.5 D2H012Q01 43 D2H012Q01 mS m^-1

Summary of classification: D21E n=30 Class 0

(70) Catchment D21H: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D2H012Q01 494 Little Caledon River at The Populars 58

D21H - Stations used: 1, Samples selected: 30 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 30 7.36 D2H012Q01 8.24 D2H012Q01 8.41 D2H012Q01 8.52 D2H012Q01 -log [H⁺]

Fluoride 30 0.1 D2H012Q01 0.14 D2H012Q01 0.2 D2H012Q01 0.25 D2H012Q01 mg l^-1

NO3(N) 30 0.02 D2H012Q01 0.103 D2H012Q01 0.17 D2H012Q01 0.482 D2H012Q01 mg l^-1

Sulphate 30 7.9 D2H012Q01 14.8 D2H012Q01 17.1 D2H012Q01 21.5 D2H012Q01 mg l^-1

Chloride 30 4.8 D2H012Q01 5 D2H012Q01 9.5 D2H012Q01 10.5 D2H012Q01 mg l^-1

Sodium 30 5.5 D2H012Q01 9.6 D2H012Q01 12.9 D2H012Q01 16.9 D2H012Q01 mg l^-1

Magnesium 30 7.2 D2H012Q01 12.4 D2H012Q01 16.5 D2H012Q01 20 D2H012Q01 mg l^-1

TDS 30 144 D2H012Q01 232 D2H012Q01 309 D2H012Q01 336 D2H012Q01 mg l^-1

Conductivity 30 18.2 D2H012Q01 30.1 D2H012Q01 38.5 D2H012Q01 43 D2H012Q01 mS m^-1

Summary of classification: D21H n=30 Class 0

(73) Catchment D22C: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D2H035Q01 285 Caledonriver at Ficksburg-Ficksburg Brid 59

D22C - Stations used: 1, Samples selected: 26 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 26 7.58 D2H035Q01 8.05 D2H035Q01 8.27 D2H035Q01 8.38 D2H035Q01 -log [H⁺]

Fluoride 26 0.05 D2H035Q01 0.14 D2H035Q01 0.16 D2H035Q01 0.18 D2H035Q01 mg l^-1

NO3(N) 26 0.02 D2H035Q01 0.244 D2H035Q01 0.401 D2H035Q01 0.717 D2H035Q01 mg l^-1

Sulphate 26 5.4 D2H035Q01 11.1 D2H035Q01 13.8 D2H035Q01 15.8 D2H035Q01 mg l^-1

Chloride 26 4.1 D2H035Q01 5 D2H035Q01 5 D2H035Q01 6.1 D2H035Q01 mg l^-1

Sodium 26 3.8 D2H035Q01 5.1 D2H035Q01 8 D2H035Q01 9.7 D2H035Q01 mg l^-1

Magnesium 26 3.9 D2H035Q01 6.1 D2H035Q01 11.8 D2H035Q01 13.4 D2H035Q01 mg l^-1

TDS 26 77 D2H035Q01 143 D2H035Q01 221 D2H035Q01 244 D2H035Q01 mg l^-1

Conductivity 26 11 D2H035Q01 18.8 D2H035Q01 28.5 D2H035Q01 31.9 D2H035Q01 mS m^-1

Summary of classification: D22C n=26 Class 0

(77) Catchment D22H: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

D2H011Q01 489 Caledon River at Maseru Lesotho G22 60

D2H020Q01 88 Caledon River at Pleasant View-Maseru 61

D22H - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(80) Catchment D23C: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

D2H026Q01 dam Armenia Dam on Leeu River: Down Stream W none

D2H025Q01 dam Armenia Dam on Leeu River: Right Canal none

D23C - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(81) Catchment D23D: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

D2H026Q01 dam Armenia Dam on Leeu River: Down Stream W none

D2H025Q01 dam Armenia Dam on Leeu River: Right Canal none

D23D - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(82) Catchment D23E: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

D2H037Q01 382 Caledon River at Wilgedraai-Hobhouse 62

D2H022Q01 48 Caledon River at Wilgedraai-Hobhouse 63

D23E - Stations used: 2, Samples selected: 119 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 119 6.94 D2H037Q01 7.98 D2H037Q01 8.28 D2H037Q01 8.4 D2H037Q01 -log [H⁺]

Fluoride 119 0.1 D2H037Q01 0.18 D2H037Q01 0.26 D2H037Q01 0.34 D2H037Q01 mg l^-1

NO3(N) 119 0.02 D2H037Q01 0.103 D2H037Q01 0.496 D2H037Q01 3.611 D2H037Q01 mg l^-1

Sulphate 119 3 D2H037Q01 11.9 D2H037Q01 20.6 D2H037Q01 44.4 D2H037Q01 mg l^-1

Chloride 119 2.5 D2H037Q01 5 D2H037Q01 12.2 D2H037Q01 79.5 D2H037Q01 mg l^-1

Sodium 119 4.2 D2H037Q01 7.7 D2H037Q01 16 D2H037Q01 76.7 D2H037Q01 mg l^-1

Magnesium 119 3.4 D2H037Q01 6.2 D2H037Q01 13.7 D2H037Q01 25.5 D2H037Q01 mg l^-1

TDS 119 90 D2H037Q01 145 D2H037Q01 259 D2H037Q01 569 D2H037Q01 mg l^-1

Conductivity 119 10.4 D2H037Q01 19.7 D2H037Q01 34.2 D2H037Q01 80.4 D2H037Q01 mS m^-1

Summary of classification: D23E n=119 Class 0

(83) Catchment D23F: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D2H001Q01 110 Caledon River at Jammerdrift 64

D23F - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(84) Catchment D23G: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D2H001Q01 110 Caledon River at Jammerdrift 65

D23G - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(85) Catchment D23H: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D2H028Q01 dam Knellpoort Dam on Riet Spruit: Down Stre none

D23H - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(86) Catchment D23J: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

D2H001Q01 110 Caledon River at Jammerdrift 66

D2H028Q01 dam Knellpoort Dam on Riet Spruit: Down Stre none

D23J - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(87) Catchment D24A: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D2H024Q01 dam Egmont Dam on Wit Spruit: Left Canal none

D24A - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(89) Catchment D24C: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D2H024Q01 dam Egmont Dam on Wit Spruit: Left Canal none

D24C - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(93) Catchment D24G: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D2H036Q01 181 Caledonriver at Kommissiedrift 67

D24G - Stations used: 1, Samples selected: 35 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 35 7.27 D2H036Q01 8.1 D2H036Q01 8.34 D2H036Q01 8.41 D2H036Q01 -log [H⁺]

Fluoride 35 0.15 D2H036Q01 0.21 D2H036Q01 0.28 D2H036Q01 0.38 D2H036Q01 mg l^-1

NO3(N) 35 0.02 D2H036Q01 0.066 D2H036Q01 0.462 D2H036Q01 0.681 D2H036Q01 mg l^-1

Sulphate 35 6.7 D2H036Q01 12.1 D2H036Q01 15.4 D2H036Q01 20.3 D2H036Q01 mg l^-1

Chloride 35 5 D2H036Q01 5 D2H036Q01 5 D2H036Q01 12.4 D2H036Q01 mg l^-1

Sodium 35 5.7 D2H036Q01 8.1 D2H036Q01 12.2 D2H036Q01 20.3 D2H036Q01 mg l^-1

Magnesium 35 3.8 D2H036Q01 7.7 D2H036Q01 12.2 D2H036Q01 14.1 D2H036Q01 mg l^-1

TDS 35 93 D2H036Q01 161 D2H036Q01 227 D2H036Q01 299 D2H036Q01 mg l^-1

Conductivity 35 11.9 D2H036Q01 21.1 D2H036Q01 29.6 D2H036Q01 37.5 D2H036Q01 mS m^-1

Summary of classification: D24G n=35 Class 0

(102) Catchment D31E: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D3H024Q01 dam Vanderkloof Dam on Orange River: Right C none

D31E - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(111) Catchment D32J: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D3H015Q01 365 Seekoei River at De Eerste Poort 68

D32J - Stations used: 1, Samples selected: 18 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 18 7.99 D3H015Q01 8.46 D3H015Q01 8.58 D3H015Q01 8.66 D3H015Q01 -log [H⁺]

Fluoride 18 0.1 D3H015Q01 0.5 D3H015Q01 0.57 D3H015Q01 0.59 D3H015Q01 mg l^-1

NO3(N) 18 0.02 D3H015Q01 0.055 D3H015Q01 0.269 D3H015Q01 0.648 D3H015Q01 mg l^-1

Sulphate 18 11.7 D3H015Q01 38.2 D3H015Q01 47.8 D3H015Q01 50.1 D3H015Q01 mg l^-1

Chloride 18 6.6 D3H015Q01 45.6 D3H015Q01 62.3 D3H015Q01 66.7 D3H015Q01 mg l^-1

Sodium 18 7.9 D3H015Q01 64.2 D3H015Q01 84.2 D3H015Q01 102.6 D3H015Q01 mg l^-1

Magnesium 18 6.9 D3H015Q01 37.1 D3H015Q01 49.2 D3H015Q01 49.8 D3H015Q01 mg l^-1

TDS 18 151 D3H015Q01 564 D3H015Q01 689 D3H015Q01 795 D3H015Q01 mg l^-1

Conductivity 18 18.6 D3H015Q01 71.1 D3H015Q01 84.9 D3H015Q01 95.4 D3H015Q01 mS m^-1

Summary of classification (consituents in each range in brackets): D32J n=18 Class 1: I(Mg TDS EC)

(112) Catchment D32K: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D3H015Q01 365 Seekoei River at De Eerste Poort 69

D32K - Stations used: 1, Samples selected: 18 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 18 7.99 D3H015Q01 8.46 D3H015Q01 8.58 D3H015Q01 8.66 D3H015Q01 -log [H⁺]

Fluoride 18 0.1 D3H015Q01 0.5 D3H015Q01 0.57 D3H015Q01 0.59 D3H015Q01 mg l^-1

NO3(N) 18 0.02 D3H015Q01 0.055 D3H015Q01 0.269 D3H015Q01 0.648 D3H015Q01 mg l^-1

Sulphate 18 11.7 D3H015Q01 38.2 D3H015Q01 47.8 D3H015Q01 50.1 D3H015Q01 mg l^-1

Chloride 18 6.6 D3H015Q01 45.6 D3H015Q01 62.3 D3H015Q01 66.7 D3H015Q01 mg l^-1

Sodium 18 7.9 D3H015Q01 64.2 D3H015Q01 84.2 D3H015Q01 102.6 D3H015Q01 mg l^-1

Magnesium 18 6.9 D3H015Q01 37.1 D3H015Q01 49.2 D3H015Q01 49.8 D3H015Q01 mg l^-1

TDS 18 151 D3H015Q01 564 D3H015Q01 689 D3H015Q01 795 D3H015Q01 mg l^-1

Conductivity 18 18.6 D3H015Q01 71.1 D3H015Q01 84.9 D3H015Q01 95.4 D3H015Q01 mS m^-1

Summary of classification (consituents in each range in brackets): D32K n=18 Class 1: I(Mg TDS EC)

(113) Catchment D33A: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D3H012Q01 472 Orange River at Dooren Kuilen Down Stre 70

D33A - Stations used: 1, Samples selected: 61 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 61 7.11 D3H012Q01 7.92 D3H012Q01 8.13 D3H012Q01 8.34 D3H012Q01 -log [H⁺]

Fluoride 61 0.05 D3H012Q01 0.16 D3H012Q01 0.2 D3H012Q01 0.25 D3H012Q01 mg l^-1

NO3(N) 61 0.02 D3H012Q01 0.236 D3H012Q01 0.434 D3H012Q01 0.508 D3H012Q01 mg l^-1

Sulphate 61 4.3 D3H012Q01 9.3 D3H012Q01 11.3 D3H012Q01 16.6 D3H012Q01 mg l^-1

Chloride 61 2 D3H012Q01 5 D3H012Q01 7 D3H012Q01 8.6 D3H012Q01 mg l^-1

Sodium 61 4.3 D3H012Q01 6.4 D3H012Q01 7.1 D3H012Q01 7.7 D3H012Q01 mg l^-1

Magnesium 61 4.8 D3H012Q01 7 D3H012Q01 7.5 D3H012Q01 12.9 D3H012Q01 mg l^-1

TDS 61 113 D3H012Q01 148 D3H012Q01 161 D3H012Q01 172 D3H012Q01 mg l^-1

Conductivity 61 13.8 D3H012Q01 20.2 D3H012Q01 21.4 D3H012Q01 23.1 D3H012Q01 mS m^-1

Summary of classification: D33A n=61 Class 0

(122) Catchment D33K: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

D3H019Q01 canal Oranje-Vaal Canal at Nottingham none

D3H008Q01 1050 at Marksdrift on Orange River 71

D33K - Stations used: 1, Samples selected: 238 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 238 7.26 D3H008Q01 8.11 D3H008Q01 8.25 D3H008Q01 8.5 D3H008Q01 -log [H⁺]

Fluoride 238 0.05 D3H008Q01 0.18 D3H008Q01 0.21 D3H008Q01 0.47 D3H008Q01 mg l^-1

NO3(N) 238 0.02 D3H008Q01 0.354 D3H008Q01 0.509 D3H008Q01 0.708 D3H008Q01 mg l^-1

Sulphate 238 5.8 D3H008Q01 12.2 D3H008Q01 16.8 D3H008Q01 139.4 D3H008Q01 mg l^-1

Chloride 238 2.5 D3H008Q01 6.1 D3H008Q01 11.2 D3H008Q01 163.6 D3H008Q01 mg l^-1

Sodium 238 4.2 D3H008Q01 8.4 D3H008Q01 12.1 D3H008Q01 109.1 D3H008Q01 mg l^-1

Magnesium 238 4.4 D3H008Q01 7.7 D3H008Q01 9.4 D3H008Q01 39.6 D3H008Q01 mg l^-1

TDS 238 121 D3H008Q01 162 D3H008Q01 189 D3H008Q01 684 D3H008Q01 mg l^-1

Conductivity 238 16 D3H008Q01 22.5 D3H008Q01 26.3 D3H008Q01 107.4 D3H008Q01 mS m^-1

Summary of classification: D33K n=238 Class 0

(123) Catchment D34A: Total number of "H...Q" (flow gauging, quality) stations = 3.

Station total n
samples description map
code

D3H013Q01 968 Orange River at Roodepoort 72

D3H004Q01 147 Orange River at Waschbank-Norvalspont 73

D3H022Q01 dam Gariep Dam on Orange River: Turbines none

D34A - Stations used: 2, Samples selected: 88 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 88 7.26 D3H013Q01 7.98 D3H013Q01 8.19 D3H013Q01 8.55 D3H013Q01 -log [H⁺]

Fluoride 88 0.1 D3H013Q01 0.16 D3H013Q01 0.19 D3H013Q01 0.24 D3H013Q01 mg l^-1

NO3(N) 88 0.02 D3H013Q01 0.407 D3H013Q01 0.48 D3H013Q01 0.588 D3H013Q01 mg l^-1

Sulphate 88 2 D3H013Q01 8.7 D3H013Q01 13.4 D3H013Q01 18.4 D3H013Q01 mg l^-1

Chloride 88 2 D3H013Q01 5 D3H013Q01 5 D3H013Q01 6.8 D3H013Q01 mg l^-1

Sodium 88 3.5 D3H013Q01 5.4 D3H013Q01 6 D3H013Q01 17.1 D3H013Q01 mg l^-1

Magnesium 88 3.7 D3H013Q01 6 D3H013Q01 7.1 D3H013Q01 12.7 D3H013Q01 mg l^-1

TDS 88 111 D3H013Q01 129 D3H013Q01 142 D3H013Q01 153 D3H013Q01 mg l^-1

Conductivity 88 14.8 D3H013Q01 16.7 D3H013Q01 18.9 D3H013Q01 20.6 D3H013Q01 mS m^-1

Summary of classification: D34A n=88 Class 0

(131) Catchment D35B: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

D3H011Q01 28 Orange River at Boshismanpoort-Bethulie 74

D3H002Q01 5 Orange River at Bethulie 75

D35B - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(137) Catchment D35H: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

D3H002Q01 5 Orange River at Bethulie 76

D3H010Q01 43 Orange River at Zeekoegat-Oviston 77

D35H - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(139) Catchment D35K: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

D3H022Q01 dam Gariep Dam on Orange River: Turbines none

D3H010Q01 43 Orange River at Zeekoegat-Oviston 78

D35K - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(141) Catchment D62J: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D6H003Q01 0 at Uitdraai De Wet Se Boom on Brakrivier none

(142) Catchment D71A: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

D7H011Q01 2 Orange River at Rooikop 79

D7H012Q01 16 Orange River at Irene 80

D71A - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

Processing dam monitoring points:

(1) Checked C5R004Q01 (Krugersdrift) for valid samples...

Quaternary S31C, dam station: C5R004Q01, Samples selected: 47 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 47 7.4 C5R004Q01 8.16 C5R004Q01 8.46 C5R004Q01 9.28 C5R004Q01 -log [H⁺]

Fluoride 47 0.22 C5R004Q01 0.31 C5R004Q01 0.39 C5R004Q01 0.43 C5R004Q01 mg l^-1

NO3(N) 47 0.02 C5R004Q01 0.055 C5R004Q01 0.725 C5R004Q01 2.741 C5R004Q01 mg l^-1

Sulphate 47 10.5 C5R004Q01 22.9 C5R004Q01 32.2 C5R004Q01 35.1 C5R004Q01 mg l^-1

Chloride 47 12.5 C5R004Q01 32.6 C5R004Q01 73.6 C5R004Q01 81.5 C5R004Q01 mg l^-1

Sodium 47 12.8 C5R004Q01 31.7 C5R004Q01 60 C5R004Q01 70.9 C5R004Q01 mg l^-1

Magnesium 47 6.2 C5R004Q01 13.1 C5R004Q01 22.9 C5R004Q01 26.3 C5R004Q01 mg l^-1

TDS 47 190 C5R004Q01 321 C5R004Q01 492 C5R004Q01 546 C5R004Q01 mg l^-1

Conductivity 47 25.8 C5R004Q01 44.3 C5R004Q01 68.7 C5R004Q01 75 C5R004Q01 mS m^-1

(2) Checked C5R006Q01 (Masels Poort) for valid samples...

Quaternary S31C, dam station: C5R006Q01, Samples selected: 72 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 72 7.29 C5R006Q01 8.13 C5R006Q01 8.33 C5R006Q01 9 C5R006Q01 -log [H⁺]

Fluoride 72 0.16 C5R006Q01 0.23 C5R006Q01 0.34 C5R006Q01 0.4 C5R006Q01 mg l^-1

NO3(N) 72 0.02 C5R006Q01 0.067 C5R006Q01 0.274 C5R006Q01 3.895 C5R006Q01 mg l^-1

Sulphate 72 6.4 C5R006Q01 15.7 C5R006Q01 20.7 C5R006Q01 44.3 C5R006Q01 mg l^-1

Chloride 72 5 C5R006Q01 10.8 C5R006Q01 22.2 C5R006Q01 60.8 C5R006Q01 mg l^-1

Sodium 72 7 C5R006Q01 15.7 C5R006Q01 30.5 C5R006Q01 46.7 C5R006Q01 mg l^-1

Magnesium 72 4.1 C5R006Q01 9.3 C5R006Q01 14.8 C5R006Q01 23.8 C5R006Q01 mg l^-1

TDS 72 110 C5R006Q01 224 C5R006Q01 317 C5R006Q01 477 C5R006Q01 mg l^-1

Conductivity 72 12.6 C5R006Q01 28 C5R006Q01 41.9 C5R006Q01 64.1 C5R006Q01 mS m^-1

(3) Checked C5R007Q01 (Mockes) for valid samples...

Quaternary S31C, dam station: C5R007Q01, Samples selected: 80 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 80 7.09 C5R007Q01 8.13 C5R007Q01 8.37 C5R007Q01 8.62 C5R007Q01 -log [H⁺]

Fluoride 80 0.17 C5R007Q01 0.25 C5R007Q01 0.35 C5R007Q01 0.4 C5R007Q01 mg l^-1

NO3(N) 80 0.02 C5R007Q01 0.044 C5R007Q01 0.248 C5R007Q01 6.209 C5R007Q01 mg l^-1

Sulphate 80 5.5 C5R007Q01 16.4 C5R007Q01 23.5 C5R007Q01 42.4 C5R007Q01 mg l^-1

Chloride 80 5 C5R007Q01 13.2 C5R007Q01 22.4 C5R007Q01 53.4 C5R007Q01 mg l^-1

Sodium 80 6.4 C5R007Q01 19.2 C5R007Q01 32.6 C5R007Q01 49.1 C5R007Q01 mg l^-1

Magnesium 80 3.6 C5R007Q01 10.1 C5R007Q01 15.8 C5R007Q01 17.9 C5R007Q01 mg l^-1

TDS 80 105 C5R007Q01 238 C5R007Q01 332 C5R007Q01 450 C5R007Q01 mg l^-1

Conductivity 80 12.1 C5R007Q01 31.3 C5R007Q01 44.1 C5R007Q01 62.3 C5R007Q01 mS m^-1

(4) Checked C5R007Q01 (Mockes) for valid samples...

(5) Checked C5R003Q01 (Rustfontein) for valid samples...

Quaternary S31C, dam station: C5R003Q01, Samples selected: 107 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 107 7.4 C5R003Q01 8.19 C5R003Q01 8.38 C5R003Q01 8.58 C5R003Q01 -log [H⁺]

Fluoride 107 0.15 C5R003Q01 0.28 C5R003Q01 0.34 C5R003Q01 0.6 C5R003Q01 mg l^-1

NO3(N) 107 0.02 C5R003Q01 0.198 C5R003Q01 0.37 C5R003Q01 6.697 C5R003Q01 mg l^-1

Sulphate 107 5.2 C5R003Q01 12 C5R003Q01 16.1 C5R003Q01 23.1 C5R003Q01 mg l^-1

Chloride 107 5 C5R003Q01 5 C5R003Q01 11.1 C5R003Q01 29.3 C5R003Q01 mg l^-1

Sodium 107 10.4 C5R003Q01 16.1 C5R003Q01 20.4 C5R003Q01 48.8 C5R003Q01 mg l^-1

Magnesium 107 6 C5R003Q01 9.7 C5R003Q01 13.8 C5R003Q01 16.9 C5R003Q01 mg l^-1

TDS 107 161 C5R003Q01 213 C5R003Q01 270 C5R003Q01 407 C5R003Q01 mg l^-1

Conductivity 107 20.2 C5R003Q01 27.2 C5R003Q01 35.7 C5R003Q01 52.4 C5R003Q01 mS m^-1

(6) Checked C5R005Q01 (Groothoek) for valid samples...

Quaternary S31C, dam station: C5R005Q01, Samples selected: 101 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 101 7.12 C5R005Q01 8.03 C5R005Q01 8.26 C5R005Q01 8.63 C5R005Q01 -log [H⁺]

Fluoride 101 0.16 C5R005Q01 0.22 C5R005Q01 0.35 C5R005Q01 0.41 C5R005Q01 mg l^-1

NO3(N) 101 0.02 C5R005Q01 0.089 C5R005Q01 0.277 C5R005Q01 0.986 C5R005Q01 mg l^-1

Sulphate 101 6.7 C5R005Q01 13.5 C5R005Q01 19.7 C5R005Q01 28.2 C5R005Q01 mg l^-1

Chloride 101 5 C5R005Q01 5 C5R005Q01 10.5 C5R005Q01 14.7 C5R005Q01 mg l^-1

Sodium 101 7 C5R005Q01 11.1 C5R005Q01 24.2 C5R005Q01 30.9 C5R005Q01 mg l^-1

Magnesium 101 4.1 C5R005Q01 7.3 C5R005Q01 13.7 C5R005Q01 16.5 C5R005Q01 mg l^-1

TDS 101 125 C5R005Q01 162 C5R005Q01 281 C5R005Q01 331 C5R005Q01 mg l^-1

Conductivity 101 15.5 C5R005Q01 20.8 C5R005Q01 36.2 C5R005Q01 43.3 C5R005Q01 mS m^-1

(7) Checked D2R002Q01 (Armenia) for valid samples...

Quaternary S31C, dam station: D2R002Q01, Samples selected: 36 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 36 6.85 D2R002Q01 8.03 D2R002Q01 8.31 D2R002Q01 8.9 D2R002Q01 -log [H⁺]

Fluoride 36 0.1 D2R002Q01 0.29 D2R002Q01 0.42 D2R002Q01 0.56 D2R002Q01 mg l^-1

NO3(N) 36 0.02 D2R002Q01 0.055 D2R002Q01 0.275 D2R002Q01 0.493 D2R002Q01 mg l^-1

Sulphate 36 8.2 D2R002Q01 16.8 D2R002Q01 21.7 D2R002Q01 26.9 D2R002Q01 mg l^-1

Chloride 36 5 D2R002Q01 5 D2R002Q01 12 D2R002Q01 18.8 D2R002Q01 mg l^-1

Sodium 36 4.1 D2R002Q01 17.9 D2R002Q01 29.5 D2R002Q01 38.4 D2R002Q01 mg l^-1

Magnesium 36 4.1 D2R002Q01 6.9 D2R002Q01 11.1 D2R002Q01 13.3 D2R002Q01 mg l^-1

TDS 36 121 D2R002Q01 185 D2R002Q01 265 D2R002Q01 338 D2R002Q01 mg l^-1

Conductivity 36 13.3 D2R002Q01 23.3 D2R002Q01 36.2 D2R002Q01 44 D2R002Q01 mS m^-1

(8) Checked C5R001Q01 (Tierpoort) for valid samples...

Quaternary S31C, dam station: C5R001Q01, Samples selected: 99 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 99 7.02 C5R001Q01 8.05 C5R001Q01 8.33 C5R001Q01 8.68 C5R001Q01 -log [H⁺]

Fluoride 99 0.12 C5R001Q01 0.24 C5R001Q01 0.6 C5R001Q01 0.75 C5R001Q01 mg l^-1

NO3(N) 99 0.02 C5R001Q01 0.091 C5R001Q01 0.336 C5R001Q01 0.411 C5R001Q01 mg l^-1

Sulphate 99 6.7 C5R001Q01 15.4 C5R001Q01 22.7 C5R001Q01 52 C5R001Q01 mg l^-1

Chloride 99 5 C5R001Q01 5 C5R001Q01 26.3 C5R001Q01 40.5 C5R001Q01 mg l^-1

Sodium 99 5.9 C5R001Q01 12.5 C5R001Q01 45.3 C5R001Q01 72.4 C5R001Q01 mg l^-1

Magnesium 99 4.3 C5R001Q01 6.5 C5R001Q01 16.1 C5R001Q01 22.9 C5R001Q01 mg l^-1

TDS 99 134 C5R001Q01 172 C5R001Q01 387 C5R001Q01 539 C5R001Q01 mg l^-1

Conductivity 99 18.5 C5R001Q01 22 C5R001Q01 50.4 C5R001Q01 69.1 C5R001Q01 mS m^-1

(9) Checked C5R002Q01 (Kalkfontein) for valid samples...

Quaternary S31C, dam station: C5R002Q01, Samples selected: 133 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 133 7.3 C5R002Q01 8.28 C5R002Q01 8.48 C5R002Q01 8.96 C5R002Q01 -log [H⁺]

Fluoride 133 0.18 C5R002Q01 0.47 C5R002Q01 0.61 C5R002Q01 0.81 C5R002Q01 mg l^-1

NO3(N) 133 0.02 C5R002Q01 0.099 C5R002Q01 0.297 C5R002Q01 1.155 C5R002Q01 mg l^-1

Sulphate 133 7.8 C5R002Q01 20.2 C5R002Q01 32.2 C5R002Q01 45.9 C5R002Q01 mg l^-1

Chloride 133 14.6 C5R002Q01 30.4 C5R002Q01 47.1 C5R002Q01 183.2 C5R002Q01 mg l^-1

Sodium 133 17.3 C5R002Q01 39 C5R002Q01 61.2 C5R002Q01 158.5 C5R002Q01 mg l^-1

Magnesium 133 7.9 C5R002Q01 20.8 C5R002Q01 27.3 C5R002Q01 33.2 C5R002Q01 mg l^-1

TDS 133 182 C5R002Q01 356 C5R002Q01 469 C5R002Q01 685 C5R002Q01 mg l^-1

Conductivity 133 29.1 C5R002Q01 48.2 C5R002Q01 64.5 C5R002Q01 105 C5R002Q01 mS m^-1

(10) Checked D2R006Q01 (Knellpoort) for valid samples...

Quaternary S31C, dam station: D2R006Q01, Samples selected: 61 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 61 7.37 D2R006Q01 8.12 D2R006Q01 8.34 D2R006Q01 8.85 D2R006Q01 -log [H⁺]

Fluoride 61 0.17 D2R006Q01 0.27 D2R006Q01 0.31 D2R006Q01 0.35 D2R006Q01 mg l^-1

NO3(N) 61 0.02 D2R006Q01 0.079 D2R006Q01 0.241 D2R006Q01 0.42 D2R006Q01 mg l^-1

Sulphate 61 2 D2R006Q01 10.1 D2R006Q01 13.3 D2R006Q01 37 D2R006Q01 mg l^-1

Chloride 61 5 D2R006Q01 7.8 D2R006Q01 10.8 D2R006Q01 13.7 D2R006Q01 mg l^-1

Sodium 61 4.9 D2R006Q01 13.2 D2R006Q01 15.3 D2R006Q01 17.3 D2R006Q01 mg l^-1

Magnesium 61 4.1 D2R006Q01 9.8 D2R006Q01 11 D2R006Q01 17.1 D2R006Q01 mg l^-1

TDS 61 100 D2R006Q01 209 D2R006Q01 233 D2R006Q01 252 D2R006Q01 mg l^-1

Conductivity 61 11.9 D2R006Q01 28 D2R006Q01 30.9 D2R006Q01 32.3 D2R006Q01 mS m^-1

(11) Checked D2R004Q01 (Welbedacht) for valid samples...

Quaternary S31C, dam station: D2R004Q01, Samples selected: 58 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 58 7.07 D2R004Q01 7.97 D2R004Q01 8.24 D2R004Q01 8.6 D2R004Q01 -log [H⁺]

Fluoride 58 0.1 D2R004Q01 0.19 D2R004Q01 0.26 D2R004Q01 0.39 D2R004Q01 mg l^-1

NO3(N) 58 0.02 D2R004Q01 0.055 D2R004Q01 0.455 D2R004Q01 1.063 D2R004Q01 mg l^-1

Sulphate 58 5.9 D2R004Q01 12.3 D2R004Q01 19.1 D2R004Q01 23.5 D2R004Q01 mg l^-1

Chloride 58 2 D2R004Q01 5 D2R004Q01 14.3 D2R004Q01 18.4 D2R004Q01 mg l^-1

Sodium 58 4.9 D2R004Q01 7.8 D2R004Q01 17.4 D2R004Q01 20.6 D2R004Q01 mg l^-1

Magnesium 58 3.5 D2R004Q01 6.4 D2R004Q01 12.9 D2R004Q01 16.9 D2R004Q01 mg l^-1

TDS 58 90 D2R004Q01 148 D2R004Q01 268 D2R004Q01 311 D2R004Q01 mg l^-1

Conductivity 58 11.8 D2R004Q01 20.4 D2R004Q01 35.6 D2R004Q01 41 D2R004Q01 mS m^-1

(12) Checked D2R004Q01 (Welbedacht) for valid samples...

(13) Checked D2R004Q01 (Welbedacht) for valid samples...

(14) Checked D2R004Q01 (Welbedacht) for valid samples...

(15) Checked D3R003Q01 (Vanderkloof) for valid samples...

Quaternary S31C, dam station: D3R003Q01, Samples selected: 72 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 72 7.48 D3R003Q01 7.95 D3R003Q01 8.16 D3R003Q01 8.25 D3R003Q01 -log [H⁺]

Fluoride 72 0.1 D3R003Q01 0.17 D3R003Q01 0.21 D3R003Q01 0.43 D3R003Q01 mg l^-1

NO3(N) 72 0.02 D3R003Q01 0.182 D3R003Q01 0.34 D3R003Q01 0.58 D3R003Q01 mg l^-1

Sulphate 72 3 D3R003Q01 9.2 D3R003Q01 12 D3R003Q01 22.3 D3R003Q01 mg l^-1

Chloride 72 2 D3R003Q01 5 D3R003Q01 6.2 D3R003Q01 7.3 D3R003Q01 mg l^-1

Sodium 72 3.7 D3R003Q01 6.4 D3R003Q01 7.2 D3R003Q01 8.3 D3R003Q01 mg l^-1

Magnesium 72 5.4 D3R003Q01 6.9 D3R003Q01 7.7 D3R003Q01 8 D3R003Q01 mg l^-1

TDS 72 120 D3R003Q01 148 D3R003Q01 160 D3R003Q01 178 D3R003Q01 mg l^-1

Conductivity 72 15.6 D3R003Q01 20.3 D3R003Q01 21.5 D3R003Q01 23.4 D3R003Q01 mS m^-1

(16) Checked D2R001Q01 (Egmont) for valid samples...

Quaternary S31C, dam station: D2R001Q01, Samples selected: 30 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 30 7.41 D2R001Q01 7.99 D2R001Q01 8.22 D2R001Q01 8.76 D2R001Q01 -log [H⁺]

Fluoride 30 0.2 D2R001Q01 0.26 D2R001Q01 0.35 D2R001Q01 0.46 D2R001Q01 mg l^-1

NO3(N) 30 0.02 D2R001Q01 0.158 D2R001Q01 0.392 D2R001Q01 0.567 D2R001Q01 mg l^-1

Sulphate 30 9.1 D2R001Q01 13.6 D2R001Q01 22.1 D2R001Q01 27.7 D2R001Q01 mg l^-1

Chloride 30 5 D2R001Q01 5 D2R001Q01 10.1 D2R001Q01 11.3 D2R001Q01 mg l^-1

Sodium 30 9.5 D2R001Q01 11.8 D2R001Q01 19.8 D2R001Q01 24 D2R001Q01 mg l^-1

Magnesium 30 5 D2R001Q01 6.5 D2R001Q01 10.2 D2R001Q01 13.2 D2R001Q01 mg l^-1

TDS 30 128 D2R001Q01 162 D2R001Q01 218 D2R001Q01 304 D2R001Q01 mg l^-1

Conductivity 30 16.9 D2R001Q01 20.3 D2R001Q01 28.5 D2R001Q01 39.7 D2R001Q01 mS m^-1

(17) Checked D3R002Q01 (Gariep) for valid samples...

Quaternary S31C, dam station: D3R002Q01, Samples selected: 146 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 146 5.09 D3R002Q01 8.05 D3R002Q01 8.22 D3R002Q01 8.43 D3R002Q01 -log [H⁺]

Fluoride 146 0.1 D3R002Q01 0.16 D3R002Q01 0.21 D3R002Q01 0.28 D3R002Q01 mg l^-1

NO3(N) 146 0.02 D3R002Q01 0.33 D3R002Q01 0.453 D3R002Q01 0.604 D3R002Q01 mg l^-1

Sulphate 146 2 D3R002Q01 9.1 D3R002Q01 12.2 D3R002Q01 22.6 D3R002Q01 mg l^-1

Chloride 146 2 D3R002Q01 5 D3R002Q01 5.9 D3R002Q01 8 D3R002Q01 mg l^-1

Sodium 146 3.9 D3R002Q01 5.7 D3R002Q01 6.4 D3R002Q01 7.6 D3R002Q01 mg l^-1

Magnesium 146 4.9 D3R002Q01 6.5 D3R002Q01 7.2 D3R002Q01 12.7 D3R002Q01 mg l^-1

TDS 146 116 D3R002Q01 137 D3R002Q01 148 D3R002Q01 159 D3R002Q01 mg l^-1

Conductivity 146 15.4 D3R002Q01 18.7 D3R002Q01 19.7 D3R002Q01 20.1 D3R002Q01 mS m^-1

(18) Checked D3R001Q01 (Bethulie) for valid samples...
Number of samples found = 0: less than the 5 required, so not classified.

Summary of dam (or lake) classifications, with classification variables, if any. Click on a dam station to go to the classification data.

Dam
station number class Class I
variable Class II
variable Class III
variable

C5R004Q01 47 1 TDS

C5R006Q01 72 0

C5R007Q01 80 0

C5R007Q01 80 0

C5R003Q01 107 0

C5R005Q01 101 0

D2R002Q01 36 0

C5R001Q01 99 0

C5R002Q01 133 1 TDS

D2R006Q01 61 0

D2R004Q01 58 0

D2R004Q01 58 0

D2R004Q01 58 0

D2R004Q01 58 0

D3R003Q01 72 0

D2R001Q01 30 0

D3R002Q01 146 0

Finished calculations for Upper Orange WMA at 2006-12-18 - 16:20:33

[Chemical index page] [IWQS home page]

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	30	7.36	D2H012Q01	8.24	D2H012Q01	8.41	D2H012Q01	8.52	D2H012Q01	-log [H⁺]
Fluoride	30	0.1	D2H012Q01	0.14	D2H012Q01	0.2	D2H012Q01	0.25	D2H012Q01	mg l^-1
NO3(N)	30	0.02	D2H012Q01	0.103	D2H012Q01	0.17	D2H012Q01	0.482	D2H012Q01	mg l^-1
Sulphate	30	7.9	D2H012Q01	14.8	D2H012Q01	17.1	D2H012Q01	21.5	D2H012Q01	mg l^-1
Chloride	30	4.8	D2H012Q01	5	D2H012Q01	9.5	D2H012Q01	10.5	D2H012Q01	mg l^-1
Sodium	30	5.5	D2H012Q01	9.6	D2H012Q01	12.9	D2H012Q01	16.9	D2H012Q01	mg l^-1
Magnesium	30	7.2	D2H012Q01	12.4	D2H012Q01	16.5	D2H012Q01	20	D2H012Q01	mg l^-1
TDS	30	144	D2H012Q01	232	D2H012Q01	309	D2H012Q01	336	D2H012Q01	mg l^-1
Conductivity	30	18.2	D2H012Q01	30.1	D2H012Q01	38.5	D2H012Q01	43	D2H012Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	26	7.58	D2H035Q01	8.05	D2H035Q01	8.27	D2H035Q01	8.38	D2H035Q01	-log [H⁺]
Fluoride	26	0.05	D2H035Q01	0.14	D2H035Q01	0.16	D2H035Q01	0.18	D2H035Q01	mg l^-1
NO3(N)	26	0.02	D2H035Q01	0.244	D2H035Q01	0.401	D2H035Q01	0.717	D2H035Q01	mg l^-1
Sulphate	26	5.4	D2H035Q01	11.1	D2H035Q01	13.8	D2H035Q01	15.8	D2H035Q01	mg l^-1
Chloride	26	4.1	D2H035Q01	5	D2H035Q01	5	D2H035Q01	6.1	D2H035Q01	mg l^-1
Sodium	26	3.8	D2H035Q01	5.1	D2H035Q01	8	D2H035Q01	9.7	D2H035Q01	mg l^-1
Magnesium	26	3.9	D2H035Q01	6.1	D2H035Q01	11.8	D2H035Q01	13.4	D2H035Q01	mg l^-1
TDS	26	77	D2H035Q01	143	D2H035Q01	221	D2H035Q01	244	D2H035Q01	mg l^-1
Conductivity	26	11	D2H035Q01	18.8	D2H035Q01	28.5	D2H035Q01	31.9	D2H035Q01	mS m^-1

Station	total n samples	description	map code
D2H011Q01	489	Caledon River at Maseru Lesotho G22	60
D2H020Q01	88	Caledon River at Pleasant View-Maseru	61

Station	total n samples	description	map code
D2H026Q01	dam	Armenia Dam on Leeu River: Down Stream W	none
D2H025Q01	dam	Armenia Dam on Leeu River: Right Canal	none

Station	total n samples	description	map code
D2H037Q01	382	Caledon River at Wilgedraai-Hobhouse	62
D2H022Q01	48	Caledon River at Wilgedraai-Hobhouse	63

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	119	6.94	D2H037Q01	7.98	D2H037Q01	8.28	D2H037Q01	8.4	D2H037Q01	-log [H⁺]
Fluoride	119	0.1	D2H037Q01	0.18	D2H037Q01	0.26	D2H037Q01	0.34	D2H037Q01	mg l^-1
NO3(N)	119	0.02	D2H037Q01	0.103	D2H037Q01	0.496	D2H037Q01	3.611	D2H037Q01	mg l^-1
Sulphate	119	3	D2H037Q01	11.9	D2H037Q01	20.6	D2H037Q01	44.4	D2H037Q01	mg l^-1
Chloride	119	2.5	D2H037Q01	5	D2H037Q01	12.2	D2H037Q01	79.5	D2H037Q01	mg l^-1
Sodium	119	4.2	D2H037Q01	7.7	D2H037Q01	16	D2H037Q01	76.7	D2H037Q01	mg l^-1
Magnesium	119	3.4	D2H037Q01	6.2	D2H037Q01	13.7	D2H037Q01	25.5	D2H037Q01	mg l^-1
TDS	119	90	D2H037Q01	145	D2H037Q01	259	D2H037Q01	569	D2H037Q01	mg l^-1
Conductivity	119	10.4	D2H037Q01	19.7	D2H037Q01	34.2	D2H037Q01	80.4	D2H037Q01	mS m^-1

Station	total n samples	description	map code
D2H001Q01	110	Caledon River at Jammerdrift	66
D2H028Q01	dam	Knellpoort Dam on Riet Spruit: Down Stre	none

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	35	7.27	D2H036Q01	8.1	D2H036Q01	8.34	D2H036Q01	8.41	D2H036Q01	-log [H⁺]
Fluoride	35	0.15	D2H036Q01	0.21	D2H036Q01	0.28	D2H036Q01	0.38	D2H036Q01	mg l^-1
NO3(N)	35	0.02	D2H036Q01	0.066	D2H036Q01	0.462	D2H036Q01	0.681	D2H036Q01	mg l^-1
Sulphate	35	6.7	D2H036Q01	12.1	D2H036Q01	15.4	D2H036Q01	20.3	D2H036Q01	mg l^-1
Chloride	35	5	D2H036Q01	5	D2H036Q01	5	D2H036Q01	12.4	D2H036Q01	mg l^-1
Sodium	35	5.7	D2H036Q01	8.1	D2H036Q01	12.2	D2H036Q01	20.3	D2H036Q01	mg l^-1
Magnesium	35	3.8	D2H036Q01	7.7	D2H036Q01	12.2	D2H036Q01	14.1	D2H036Q01	mg l^-1
TDS	35	93	D2H036Q01	161	D2H036Q01	227	D2H036Q01	299	D2H036Q01	mg l^-1
Conductivity	35	11.9	D2H036Q01	21.1	D2H036Q01	29.6	D2H036Q01	37.5	D2H036Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	18	7.99	D3H015Q01	8.46	D3H015Q01	8.58	D3H015Q01	8.66	D3H015Q01	-log [H⁺]
Fluoride	18	0.1	D3H015Q01	0.5	D3H015Q01	0.57	D3H015Q01	0.59	D3H015Q01	mg l^-1
NO3(N)	18	0.02	D3H015Q01	0.055	D3H015Q01	0.269	D3H015Q01	0.648	D3H015Q01	mg l^-1
Sulphate	18	11.7	D3H015Q01	38.2	D3H015Q01	47.8	D3H015Q01	50.1	D3H015Q01	mg l^-1
Chloride	18	6.6	D3H015Q01	45.6	D3H015Q01	62.3	D3H015Q01	66.7	D3H015Q01	mg l^-1
Sodium	18	7.9	D3H015Q01	64.2	D3H015Q01	84.2	D3H015Q01	102.6	D3H015Q01	mg l^-1
Magnesium	18	6.9	D3H015Q01	37.1	D3H015Q01	49.2	D3H015Q01	49.8	D3H015Q01	mg l^-1
TDS	18	151	D3H015Q01	564	D3H015Q01	689	D3H015Q01	795	D3H015Q01	mg l^-1
Conductivity	18	18.6	D3H015Q01	71.1	D3H015Q01	84.9	D3H015Q01	95.4	D3H015Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	61	7.11	D3H012Q01	7.92	D3H012Q01	8.13	D3H012Q01	8.34	D3H012Q01	-log [H⁺]
Fluoride	61	0.05	D3H012Q01	0.16	D3H012Q01	0.2	D3H012Q01	0.25	D3H012Q01	mg l^-1
NO3(N)	61	0.02	D3H012Q01	0.236	D3H012Q01	0.434	D3H012Q01	0.508	D3H012Q01	mg l^-1
Sulphate	61	4.3	D3H012Q01	9.3	D3H012Q01	11.3	D3H012Q01	16.6	D3H012Q01	mg l^-1
Chloride	61	2	D3H012Q01	5	D3H012Q01	7	D3H012Q01	8.6	D3H012Q01	mg l^-1
Sodium	61	4.3	D3H012Q01	6.4	D3H012Q01	7.1	D3H012Q01	7.7	D3H012Q01	mg l^-1
Magnesium	61	4.8	D3H012Q01	7	D3H012Q01	7.5	D3H012Q01	12.9	D3H012Q01	mg l^-1
TDS	61	113	D3H012Q01	148	D3H012Q01	161	D3H012Q01	172	D3H012Q01	mg l^-1
Conductivity	61	13.8	D3H012Q01	20.2	D3H012Q01	21.4	D3H012Q01	23.1	D3H012Q01	mS m^-1

Station	total n samples	description	map code
D3H019Q01	canal	Oranje-Vaal Canal at Nottingham	none
D3H008Q01	1050	at Marksdrift on Orange River	71

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	238	7.26	D3H008Q01	8.11	D3H008Q01	8.25	D3H008Q01	8.5	D3H008Q01	-log [H⁺]
Fluoride	238	0.05	D3H008Q01	0.18	D3H008Q01	0.21	D3H008Q01	0.47	D3H008Q01	mg l^-1
NO3(N)	238	0.02	D3H008Q01	0.354	D3H008Q01	0.509	D3H008Q01	0.708	D3H008Q01	mg l^-1
Sulphate	238	5.8	D3H008Q01	12.2	D3H008Q01	16.8	D3H008Q01	139.4	D3H008Q01	mg l^-1
Chloride	238	2.5	D3H008Q01	6.1	D3H008Q01	11.2	D3H008Q01	163.6	D3H008Q01	mg l^-1
Sodium	238	4.2	D3H008Q01	8.4	D3H008Q01	12.1	D3H008Q01	109.1	D3H008Q01	mg l^-1
Magnesium	238	4.4	D3H008Q01	7.7	D3H008Q01	9.4	D3H008Q01	39.6	D3H008Q01	mg l^-1
TDS	238	121	D3H008Q01	162	D3H008Q01	189	D3H008Q01	684	D3H008Q01	mg l^-1
Conductivity	238	16	D3H008Q01	22.5	D3H008Q01	26.3	D3H008Q01	107.4	D3H008Q01	mS m^-1

Station	total n samples	description	map code
D3H013Q01	968	Orange River at Roodepoort	72
D3H004Q01	147	Orange River at Waschbank-Norvalspont	73
D3H022Q01	dam	Gariep Dam on Orange River: Turbines	none

Station	total n samples	description	map code
D3H011Q01	28	Orange River at Boshismanpoort-Bethulie	74
D3H002Q01	5	Orange River at Bethulie	75

Station	total n samples	description	map code
D3H002Q01	5	Orange River at Bethulie	76
D3H010Q01	43	Orange River at Zeekoegat-Oviston	77

Station	total n samples	description	map code
D7H011Q01	2	Orange River at Rooikop	79
D7H012Q01	16	Orange River at Irene	80

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	47	7.4	C5R004Q01	8.16	C5R004Q01	8.46	C5R004Q01	9.28	C5R004Q01	-log [H⁺]
Fluoride	47	0.22	C5R004Q01	0.31	C5R004Q01	0.39	C5R004Q01	0.43	C5R004Q01	mg l^-1
NO3(N)	47	0.02	C5R004Q01	0.055	C5R004Q01	0.725	C5R004Q01	2.741	C5R004Q01	mg l^-1
Sulphate	47	10.5	C5R004Q01	22.9	C5R004Q01	32.2	C5R004Q01	35.1	C5R004Q01	mg l^-1
Chloride	47	12.5	C5R004Q01	32.6	C5R004Q01	73.6	C5R004Q01	81.5	C5R004Q01	mg l^-1
Sodium	47	12.8	C5R004Q01	31.7	C5R004Q01	60	C5R004Q01	70.9	C5R004Q01	mg l^-1
Magnesium	47	6.2	C5R004Q01	13.1	C5R004Q01	22.9	C5R004Q01	26.3	C5R004Q01	mg l^-1
TDS	47	190	C5R004Q01	321	C5R004Q01	492	C5R004Q01	546	C5R004Q01	mg l^-1
Conductivity	47	25.8	C5R004Q01	44.3	C5R004Q01	68.7	C5R004Q01	75	C5R004Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	72	7.29	C5R006Q01	8.13	C5R006Q01	8.33	C5R006Q01	9	C5R006Q01	-log [H⁺]
Fluoride	72	0.16	C5R006Q01	0.23	C5R006Q01	0.34	C5R006Q01	0.4	C5R006Q01	mg l^-1
NO3(N)	72	0.02	C5R006Q01	0.067	C5R006Q01	0.274	C5R006Q01	3.895	C5R006Q01	mg l^-1
Sulphate	72	6.4	C5R006Q01	15.7	C5R006Q01	20.7	C5R006Q01	44.3	C5R006Q01	mg l^-1
Chloride	72	5	C5R006Q01	10.8	C5R006Q01	22.2	C5R006Q01	60.8	C5R006Q01	mg l^-1
Sodium	72	7	C5R006Q01	15.7	C5R006Q01	30.5	C5R006Q01	46.7	C5R006Q01	mg l^-1
Magnesium	72	4.1	C5R006Q01	9.3	C5R006Q01	14.8	C5R006Q01	23.8	C5R006Q01	mg l^-1
TDS	72	110	C5R006Q01	224	C5R006Q01	317	C5R006Q01	477	C5R006Q01	mg l^-1
Conductivity	72	12.6	C5R006Q01	28	C5R006Q01	41.9	C5R006Q01	64.1	C5R006Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	80	7.09	C5R007Q01	8.13	C5R007Q01	8.37	C5R007Q01	8.62	C5R007Q01	-log [H⁺]
Fluoride	80	0.17	C5R007Q01	0.25	C5R007Q01	0.35	C5R007Q01	0.4	C5R007Q01	mg l^-1
NO3(N)	80	0.02	C5R007Q01	0.044	C5R007Q01	0.248	C5R007Q01	6.209	C5R007Q01	mg l^-1
Sulphate	80	5.5	C5R007Q01	16.4	C5R007Q01	23.5	C5R007Q01	42.4	C5R007Q01	mg l^-1
Chloride	80	5	C5R007Q01	13.2	C5R007Q01	22.4	C5R007Q01	53.4	C5R007Q01	mg l^-1
Sodium	80	6.4	C5R007Q01	19.2	C5R007Q01	32.6	C5R007Q01	49.1	C5R007Q01	mg l^-1
Magnesium	80	3.6	C5R007Q01	10.1	C5R007Q01	15.8	C5R007Q01	17.9	C5R007Q01	mg l^-1
TDS	80	105	C5R007Q01	238	C5R007Q01	332	C5R007Q01	450	C5R007Q01	mg l^-1
Conductivity	80	12.1	C5R007Q01	31.3	C5R007Q01	44.1	C5R007Q01	62.3	C5R007Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	107	7.4	C5R003Q01	8.19	C5R003Q01	8.38	C5R003Q01	8.58	C5R003Q01	-log [H⁺]
Fluoride	107	0.15	C5R003Q01	0.28	C5R003Q01	0.34	C5R003Q01	0.6	C5R003Q01	mg l^-1
NO3(N)	107	0.02	C5R003Q01	0.198	C5R003Q01	0.37	C5R003Q01	6.697	C5R003Q01	mg l^-1
Sulphate	107	5.2	C5R003Q01	12	C5R003Q01	16.1	C5R003Q01	23.1	C5R003Q01	mg l^-1
Chloride	107	5	C5R003Q01	5	C5R003Q01	11.1	C5R003Q01	29.3	C5R003Q01	mg l^-1
Sodium	107	10.4	C5R003Q01	16.1	C5R003Q01	20.4	C5R003Q01	48.8	C5R003Q01	mg l^-1
Magnesium	107	6	C5R003Q01	9.7	C5R003Q01	13.8	C5R003Q01	16.9	C5R003Q01	mg l^-1
TDS	107	161	C5R003Q01	213	C5R003Q01	270	C5R003Q01	407	C5R003Q01	mg l^-1
Conductivity	107	20.2	C5R003Q01	27.2	C5R003Q01	35.7	C5R003Q01	52.4	C5R003Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	101	7.12	C5R005Q01	8.03	C5R005Q01	8.26	C5R005Q01	8.63	C5R005Q01	-log [H⁺]
Fluoride	101	0.16	C5R005Q01	0.22	C5R005Q01	0.35	C5R005Q01	0.41	C5R005Q01	mg l^-1
NO3(N)	101	0.02	C5R005Q01	0.089	C5R005Q01	0.277	C5R005Q01	0.986	C5R005Q01	mg l^-1
Sulphate	101	6.7	C5R005Q01	13.5	C5R005Q01	19.7	C5R005Q01	28.2	C5R005Q01	mg l^-1
Chloride	101	5	C5R005Q01	5	C5R005Q01	10.5	C5R005Q01	14.7	C5R005Q01	mg l^-1
Sodium	101	7	C5R005Q01	11.1	C5R005Q01	24.2	C5R005Q01	30.9	C5R005Q01	mg l^-1
Magnesium	101	4.1	C5R005Q01	7.3	C5R005Q01	13.7	C5R005Q01	16.5	C5R005Q01	mg l^-1
TDS	101	125	C5R005Q01	162	C5R005Q01	281	C5R005Q01	331	C5R005Q01	mg l^-1
Conductivity	101	15.5	C5R005Q01	20.8	C5R005Q01	36.2	C5R005Q01	43.3	C5R005Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	36	6.85	D2R002Q01	8.03	D2R002Q01	8.31	D2R002Q01	8.9	D2R002Q01	-log [H⁺]
Fluoride	36	0.1	D2R002Q01	0.29	D2R002Q01	0.42	D2R002Q01	0.56	D2R002Q01	mg l^-1
NO3(N)	36	0.02	D2R002Q01	0.055	D2R002Q01	0.275	D2R002Q01	0.493	D2R002Q01	mg l^-1
Sulphate	36	8.2	D2R002Q01	16.8	D2R002Q01	21.7	D2R002Q01	26.9	D2R002Q01	mg l^-1
Chloride	36	5	D2R002Q01	5	D2R002Q01	12	D2R002Q01	18.8	D2R002Q01	mg l^-1
Sodium	36	4.1	D2R002Q01	17.9	D2R002Q01	29.5	D2R002Q01	38.4	D2R002Q01	mg l^-1
Magnesium	36	4.1	D2R002Q01	6.9	D2R002Q01	11.1	D2R002Q01	13.3	D2R002Q01	mg l^-1
TDS	36	121	D2R002Q01	185	D2R002Q01	265	D2R002Q01	338	D2R002Q01	mg l^-1
Conductivity	36	13.3	D2R002Q01	23.3	D2R002Q01	36.2	D2R002Q01	44	D2R002Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	99	7.02	C5R001Q01	8.05	C5R001Q01	8.33	C5R001Q01	8.68	C5R001Q01	-log [H⁺]
Fluoride	99	0.12	C5R001Q01	0.24	C5R001Q01	0.6	C5R001Q01	0.75	C5R001Q01	mg l^-1
NO3(N)	99	0.02	C5R001Q01	0.091	C5R001Q01	0.336	C5R001Q01	0.411	C5R001Q01	mg l^-1
Sulphate	99	6.7	C5R001Q01	15.4	C5R001Q01	22.7	C5R001Q01	52	C5R001Q01	mg l^-1
Chloride	99	5	C5R001Q01	5	C5R001Q01	26.3	C5R001Q01	40.5	C5R001Q01	mg l^-1
Sodium	99	5.9	C5R001Q01	12.5	C5R001Q01	45.3	C5R001Q01	72.4	C5R001Q01	mg l^-1
Magnesium	99	4.3	C5R001Q01	6.5	C5R001Q01	16.1	C5R001Q01	22.9	C5R001Q01	mg l^-1
TDS	99	134	C5R001Q01	172	C5R001Q01	387	C5R001Q01	539	C5R001Q01	mg l^-1
Conductivity	99	18.5	C5R001Q01	22	C5R001Q01	50.4	C5R001Q01	69.1	C5R001Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	133	7.3	C5R002Q01	8.28	C5R002Q01	8.48	C5R002Q01	8.96	C5R002Q01	-log [H⁺]
Fluoride	133	0.18	C5R002Q01	0.47	C5R002Q01	0.61	C5R002Q01	0.81	C5R002Q01	mg l^-1
NO3(N)	133	0.02	C5R002Q01	0.099	C5R002Q01	0.297	C5R002Q01	1.155	C5R002Q01	mg l^-1
Sulphate	133	7.8	C5R002Q01	20.2	C5R002Q01	32.2	C5R002Q01	45.9	C5R002Q01	mg l^-1
Chloride	133	14.6	C5R002Q01	30.4	C5R002Q01	47.1	C5R002Q01	183.2	C5R002Q01	mg l^-1
Sodium	133	17.3	C5R002Q01	39	C5R002Q01	61.2	C5R002Q01	158.5	C5R002Q01	mg l^-1
Magnesium	133	7.9	C5R002Q01	20.8	C5R002Q01	27.3	C5R002Q01	33.2	C5R002Q01	mg l^-1
TDS	133	182	C5R002Q01	356	C5R002Q01	469	C5R002Q01	685	C5R002Q01	mg l^-1
Conductivity	133	29.1	C5R002Q01	48.2	C5R002Q01	64.5	C5R002Q01	105	C5R002Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	61	7.37	D2R006Q01	8.12	D2R006Q01	8.34	D2R006Q01	8.85	D2R006Q01	-log [H⁺]
Fluoride	61	0.17	D2R006Q01	0.27	D2R006Q01	0.31	D2R006Q01	0.35	D2R006Q01	mg l^-1
NO3(N)	61	0.02	D2R006Q01	0.079	D2R006Q01	0.241	D2R006Q01	0.42	D2R006Q01	mg l^-1
Sulphate	61	2	D2R006Q01	10.1	D2R006Q01	13.3	D2R006Q01	37	D2R006Q01	mg l^-1
Chloride	61	5	D2R006Q01	7.8	D2R006Q01	10.8	D2R006Q01	13.7	D2R006Q01	mg l^-1
Sodium	61	4.9	D2R006Q01	13.2	D2R006Q01	15.3	D2R006Q01	17.3	D2R006Q01	mg l^-1
Magnesium	61	4.1	D2R006Q01	9.8	D2R006Q01	11	D2R006Q01	17.1	D2R006Q01	mg l^-1
TDS	61	100	D2R006Q01	209	D2R006Q01	233	D2R006Q01	252	D2R006Q01	mg l^-1
Conductivity	61	11.9	D2R006Q01	28	D2R006Q01	30.9	D2R006Q01	32.3	D2R006Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	58	7.07	D2R004Q01	7.97	D2R004Q01	8.24	D2R004Q01	8.6	D2R004Q01	-log [H⁺]
Fluoride	58	0.1	D2R004Q01	0.19	D2R004Q01	0.26	D2R004Q01	0.39	D2R004Q01	mg l^-1
NO3(N)	58	0.02	D2R004Q01	0.055	D2R004Q01	0.455	D2R004Q01	1.063	D2R004Q01	mg l^-1
Sulphate	58	5.9	D2R004Q01	12.3	D2R004Q01	19.1	D2R004Q01	23.5	D2R004Q01	mg l^-1
Chloride	58	2	D2R004Q01	5	D2R004Q01	14.3	D2R004Q01	18.4	D2R004Q01	mg l^-1
Sodium	58	4.9	D2R004Q01	7.8	D2R004Q01	17.4	D2R004Q01	20.6	D2R004Q01	mg l^-1
Magnesium	58	3.5	D2R004Q01	6.4	D2R004Q01	12.9	D2R004Q01	16.9	D2R004Q01	mg l^-1
TDS	58	90	D2R004Q01	148	D2R004Q01	268	D2R004Q01	311	D2R004Q01	mg l^-1
Conductivity	58	11.8	D2R004Q01	20.4	D2R004Q01	35.6	D2R004Q01	41	D2R004Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	72	7.48	D3R003Q01	7.95	D3R003Q01	8.16	D3R003Q01	8.25	D3R003Q01	-log [H⁺]
Fluoride	72	0.1	D3R003Q01	0.17	D3R003Q01	0.21	D3R003Q01	0.43	D3R003Q01	mg l^-1
NO3(N)	72	0.02	D3R003Q01	0.182	D3R003Q01	0.34	D3R003Q01	0.58	D3R003Q01	mg l^-1
Sulphate	72	3	D3R003Q01	9.2	D3R003Q01	12	D3R003Q01	22.3	D3R003Q01	mg l^-1
Chloride	72	2	D3R003Q01	5	D3R003Q01	6.2	D3R003Q01	7.3	D3R003Q01	mg l^-1
Sodium	72	3.7	D3R003Q01	6.4	D3R003Q01	7.2	D3R003Q01	8.3	D3R003Q01	mg l^-1
Magnesium	72	5.4	D3R003Q01	6.9	D3R003Q01	7.7	D3R003Q01	8	D3R003Q01	mg l^-1
TDS	72	120	D3R003Q01	148	D3R003Q01	160	D3R003Q01	178	D3R003Q01	mg l^-1
Conductivity	72	15.6	D3R003Q01	20.3	D3R003Q01	21.5	D3R003Q01	23.4	D3R003Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	30	7.41	D2R001Q01	7.99	D2R001Q01	8.22	D2R001Q01	8.76	D2R001Q01	-log [H⁺]
Fluoride	30	0.2	D2R001Q01	0.26	D2R001Q01	0.35	D2R001Q01	0.46	D2R001Q01	mg l^-1
NO3(N)	30	0.02	D2R001Q01	0.158	D2R001Q01	0.392	D2R001Q01	0.567	D2R001Q01	mg l^-1
Sulphate	30	9.1	D2R001Q01	13.6	D2R001Q01	22.1	D2R001Q01	27.7	D2R001Q01	mg l^-1
Chloride	30	5	D2R001Q01	5	D2R001Q01	10.1	D2R001Q01	11.3	D2R001Q01	mg l^-1
Sodium	30	9.5	D2R001Q01	11.8	D2R001Q01	19.8	D2R001Q01	24	D2R001Q01	mg l^-1
Magnesium	30	5	D2R001Q01	6.5	D2R001Q01	10.2	D2R001Q01	13.2	D2R001Q01	mg l^-1
TDS	30	128	D2R001Q01	162	D2R001Q01	218	D2R001Q01	304	D2R001Q01	mg l^-1
Conductivity	30	16.9	D2R001Q01	20.3	D2R001Q01	28.5	D2R001Q01	39.7	D2R001Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	146	5.09	D3R002Q01	8.05	D3R002Q01	8.22	D3R002Q01	8.43	D3R002Q01	-log [H⁺]
Fluoride	146	0.1	D3R002Q01	0.16	D3R002Q01	0.21	D3R002Q01	0.28	D3R002Q01	mg l^-1
NO3(N)	146	0.02	D3R002Q01	0.33	D3R002Q01	0.453	D3R002Q01	0.604	D3R002Q01	mg l^-1
Sulphate	146	2	D3R002Q01	9.1	D3R002Q01	12.2	D3R002Q01	22.6	D3R002Q01	mg l^-1
Chloride	146	2	D3R002Q01	5	D3R002Q01	5.9	D3R002Q01	8	D3R002Q01	mg l^-1
Sodium	146	3.9	D3R002Q01	5.7	D3R002Q01	6.4	D3R002Q01	7.6	D3R002Q01	mg l^-1
Magnesium	146	4.9	D3R002Q01	6.5	D3R002Q01	7.2	D3R002Q01	12.7	D3R002Q01	mg l^-1
TDS	146	116	D3R002Q01	137	D3R002Q01	148	D3R002Q01	159	D3R002Q01	mg l^-1
Conductivity	146	15.4	D3R002Q01	18.7	D3R002Q01	19.7	D3R002Q01	20.1	D3R002Q01	mS m^-1