Chemical classification of Middle Vaal WMA 2006-12-18

Middle Vaal WMA

Chemical classification run on 2006-12-18 - 15:57:33

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]

58 quaternary drainage regions overlap Middle Vaal WMA

(1) Catchment C24A: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C2H139Q01 558 Koekemoer Spruit at Buffelsfontein 1

Station	total n samples	description	map code
C2H139Q01	558	Koekemoer Spruit at Buffelsfontein	1

C24A - not classified: 1 samples between 2001-01-01 and 2005-12-31, 1 valid samples. Require at least 5.

(2) Catchment C24B: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C2H138Q01 3360 Vaal River at Groot Vadersbosch-Buffelsf 2

C2H007Q01 1360 at Pilgrims Estate Orkney on Vaal River 3

Station	total n samples	description	map code
C2H138Q01	3360	Vaal River at Groot Vadersbosch-Buffelsf	2
C2H007Q01	1360	at Pilgrims Estate Orkney on Vaal River	3

C24B - Stations used: 2, Samples selected: 254 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 254 7.15 C2H007Q01 8.36 C2H007Q01 8.91 C2H007Q01 9.32 C2H007Q01 -log [H⁺]

Fluoride 254 0.05 C2H007Q01 0.34 C2H007Q01 0.41 C2H007Q01 0.94 C2H007Q01 mg l^-1

NO3(N) 254 0.02 C2H007Q01 0.289 C2H007Q01 1.068 C2H007Q01 2.178 C2H007Q01 mg l^-1

Sulphate 254 34.7 C2H007Q01 193.5 C2H007Q01 236.9 C2H007Q01 287.8 C2H007Q01 mg l^-1

Chloride 254 15.5 C2H007Q01 69.9 C2H007Q01 85.6 C2H007Q01 97.9 C2H007Q01 mg l^-1

Sodium 254 16.2 C2H007Q01 66.2 C2H007Q01 82.8 C2H007Q01 95.4 C2H007Q01 mg l^-1

Magnesium 254 10.6 C2H007Q01 28.1 C2H007Q01 33.3 C2H007Q01 56 C2H007Q01 mg l^-1

TDS 254 211 C2H007Q01 622 C2H007Q01 723 C2H007Q01 825 C2H007Q01 mg l^-1

Conductivity 254 31.8 C2H007Q01 87.6 C2H007Q01 100.9 C2H007Q01 113.1 C2H007Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C24B n=254 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	254	7.15	C2H007Q01	8.36	C2H007Q01	8.91	C2H007Q01	9.32	C2H007Q01	-log [H⁺]
Fluoride	254	0.05	C2H007Q01	0.34	C2H007Q01	0.41	C2H007Q01	0.94	C2H007Q01	mg l^-1
NO3(N)	254	0.02	C2H007Q01	0.289	C2H007Q01	1.068	C2H007Q01	2.178	C2H007Q01	mg l^-1
Sulphate	254	34.7	C2H007Q01	193.5	C2H007Q01	236.9	C2H007Q01	287.8	C2H007Q01	mg l^-1
Chloride	254	15.5	C2H007Q01	69.9	C2H007Q01	85.6	C2H007Q01	97.9	C2H007Q01	mg l^-1
Sodium	254	16.2	C2H007Q01	66.2	C2H007Q01	82.8	C2H007Q01	95.4	C2H007Q01	mg l^-1
Magnesium	254	10.6	C2H007Q01	28.1	C2H007Q01	33.3	C2H007Q01	56	C2H007Q01	mg l^-1
TDS	254	211	C2H007Q01	622	C2H007Q01	723	C2H007Q01	825	C2H007Q01	mg l^-1
Conductivity	254	31.8	C2H007Q01	87.6	C2H007Q01	100.9	C2H007Q01	113.1	C2H007Q01	mS m^-1

(3) Catchment C24C: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C2H064Q01 eye Skoon Spruit at Eye of Schoonspruit none

Station	total n samples	description	map code
C2H064Q01	eye	Skoon Spruit at Eye of Schoonspruit	none

C24C - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(4) Catchment C24D: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C2H119Q01 dam Rietspruit Dam on Riet Spruit: Left Cana none

Station	total n samples	description	map code
C2H119Q01	dam	Rietspruit Dam on Riet Spruit: Left Cana	none

C24D - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(5) Catchment C24E: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C2H118Q01 dam Elandskuil Dam on Swart Leegte River: Ri none

C2H119Q01 dam Rietspruit Dam on Riet Spruit: Left Cana none

Station	total n samples	description	map code
C2H118Q01	dam	Elandskuil Dam on Swart Leegte River: Ri	none
C2H119Q01	dam	Rietspruit Dam on Riet Spruit: Left Cana	none

C24E - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(8) Catchment C24H: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C2H084Q01 433 Skoon Spruit at Klerksdorp Weir 4

C2H073Q01 2417 @ Goedgenoeg 150m U-S Orkney Bridge on S 5

Station	total n samples	description	map code
C2H084Q01	433	Skoon Spruit at Klerksdorp Weir	4
C2H073Q01	2417	@ Goedgenoeg 150m U-S Orkney Bridge on S	5

C24H - Stations used: 2, Samples selected: 292 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 292 7 C2H073Q01 8.11 C2H073Q01 8.39 C2H073Q01 8.77 C2H073Q01 -log [H⁺]

Fluoride 292 0.1 C2H073Q01 0.29 C2H073Q01 0.37 C2H073Q01 0.47 C2H073Q01 mg l^-1

NO3(N) 292 0.02 C2H084Q01 2.376 C2H073Q01 4.96 C2H073Q01 11.405 C2H073Q01 mg l^-1

Sulphate 292 7.4 C2H084Q01 97.3 C2H073Q01 232.4 C2H073Q01 333.4 C2H073Q01 mg l^-1

Chloride 292 5 C2H084Q01 51.3 C2H073Q01 129.3 C2H073Q01 163 C2H073Q01 mg l^-1

Sodium 292 9.9 C2H073Q01 43.8 C2H073Q01 108.5 C2H073Q01 142.8 C2H073Q01 mg l^-1

Magnesium 292 7.3 C2H073Q01 36 C2H073Q01 44.8 C2H073Q01 71.4 C2H073Q01 mg l^-1

TDS 292 166 C2H073Q01 578 C2H073Q01 899 C2H073Q01 1103 C2H073Q01 mg l^-1

Conductivity 292 26 C2H073Q01 76.6 C2H073Q01 121.3 C2H073Q01 156 C2H073Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C24H n=292 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	292	7	C2H073Q01	8.11	C2H073Q01	8.39	C2H073Q01	8.77	C2H073Q01	-log [H⁺]
Fluoride	292	0.1	C2H073Q01	0.29	C2H073Q01	0.37	C2H073Q01	0.47	C2H073Q01	mg l^-1
NO3(N)	292	0.02	C2H084Q01	2.376	C2H073Q01	4.96	C2H073Q01	11.405	C2H073Q01	mg l^-1
Sulphate	292	7.4	C2H084Q01	97.3	C2H073Q01	232.4	C2H073Q01	333.4	C2H073Q01	mg l^-1
Chloride	292	5	C2H084Q01	51.3	C2H073Q01	129.3	C2H073Q01	163	C2H073Q01	mg l^-1
Sodium	292	9.9	C2H073Q01	43.8	C2H073Q01	108.5	C2H073Q01	142.8	C2H073Q01	mg l^-1
Magnesium	292	7.3	C2H073Q01	36	C2H073Q01	44.8	C2H073Q01	71.4	C2H073Q01	mg l^-1
TDS	292	166	C2H073Q01	578	C2H073Q01	899	C2H073Q01	1103	C2H073Q01	mg l^-1
Conductivity	292	26	C2H073Q01	76.6	C2H073Q01	121.3	C2H073Q01	156	C2H073Q01	mS m^-1

(10) Catchment C25A: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C2H065Q01 773 Leeudoring Spruit at Klipspruit 6

Station	total n samples	description	map code
C2H065Q01	773	Leeudoring Spruit at Klipspruit	6

C25A - Stations used: 1, Samples selected: 121 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 121 7.15 C2H065Q01 8.06 C2H065Q01 8.38 C2H065Q01 8.81 C2H065Q01 -log [H⁺]

Fluoride 121 0.1 C2H065Q01 0.23 C2H065Q01 0.29 C2H065Q01 1.4 C2H065Q01 mg l^-1

NO3(N) 121 0.02 C2H065Q01 0.055 C2H065Q01 0.277 C2H065Q01 1.304 C2H065Q01 mg l^-1

Sulphate 121 2 C2H065Q01 12.7 C2H065Q01 24.7 C2H065Q01 63.8 C2H065Q01 mg l^-1

Chloride 121 2.5 C2H065Q01 16.3 C2H065Q01 28 C2H065Q01 37 C2H065Q01 mg l^-1

Sodium 121 6.3 C2H065Q01 33.3 C2H065Q01 61 C2H065Q01 80.5 C2H065Q01 mg l^-1

Magnesium 121 2.1 C2H065Q01 19.1 C2H065Q01 25.7 C2H065Q01 38.9 C2H065Q01 mg l^-1

TDS 121 104 C2H065Q01 402 C2H065Q01 539 C2H065Q01 593 C2H065Q01 mg l^-1

Conductivity 121 11.8 C2H065Q01 49.8 C2H065Q01 65 C2H065Q01 73.5 C2H065Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C25A n=121 Class 1: I(TDS)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	121	7.15	C2H065Q01	8.06	C2H065Q01	8.38	C2H065Q01	8.81	C2H065Q01	-log [H⁺]
Fluoride	121	0.1	C2H065Q01	0.23	C2H065Q01	0.29	C2H065Q01	1.4	C2H065Q01	mg l^-1
NO3(N)	121	0.02	C2H065Q01	0.055	C2H065Q01	0.277	C2H065Q01	1.304	C2H065Q01	mg l^-1
Sulphate	121	2	C2H065Q01	12.7	C2H065Q01	24.7	C2H065Q01	63.8	C2H065Q01	mg l^-1
Chloride	121	2.5	C2H065Q01	16.3	C2H065Q01	28	C2H065Q01	37	C2H065Q01	mg l^-1
Sodium	121	6.3	C2H065Q01	33.3	C2H065Q01	61	C2H065Q01	80.5	C2H065Q01	mg l^-1
Magnesium	121	2.1	C2H065Q01	19.1	C2H065Q01	25.7	C2H065Q01	38.9	C2H065Q01	mg l^-1
TDS	121	104	C2H065Q01	402	C2H065Q01	539	C2H065Q01	593	C2H065Q01	mg l^-1
Conductivity	121	11.8	C2H065Q01	49.8	C2H065Q01	65	C2H065Q01	73.5	C2H065Q01	mS m^-1

(11) Catchment C25B: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C2H067Q01 127 at Leegte on Sandspruit 7

Station	total n samples	description	map code
C2H067Q01	127	at Leegte on Sandspruit	7

C25B - Stations used: 1, Samples selected: 7 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 7 7.68 C2H067Q01 8.08 C2H067Q01 8.31 C2H067Q01 8.32 C2H067Q01 -log [H⁺]

Fluoride 7 0.22 C2H067Q01 0.36 C2H067Q01 0.42 C2H067Q01 0.44 C2H067Q01 mg l^-1

NO3(N) 7 0.02 C2H067Q01 0.02 C2H067Q01 3.337 C2H067Q01 6.313 C2H067Q01 mg l^-1

Sulphate 7 15.9 C2H067Q01 39.2 C2H067Q01 276.5 C2H067Q01 334.5 C2H067Q01 mg l^-1

Chloride 7 13 C2H067Q01 48.8 C2H067Q01 102.4 C2H067Q01 140.6 C2H067Q01 mg l^-1

Sodium 7 22.4 C2H067Q01 61.6 C2H067Q01 100.9 C2H067Q01 117.9 C2H067Q01 mg l^-1

Magnesium 7 3.3 C2H067Q01 12.1 C2H067Q01 44 C2H067Q01 48 C2H067Q01 mg l^-1

TDS 7 170 C2H067Q01 427 C2H067Q01 863 C2H067Q01 939 C2H067Q01 mg l^-1

Conductivity 7 19.1 C2H067Q01 57 C2H067Q01 116.9 C2H067Q01 127.3 C2H067Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C25B n=7 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	7	7.68	C2H067Q01	8.08	C2H067Q01	8.31	C2H067Q01	8.32	C2H067Q01	-log [H⁺]
Fluoride	7	0.22	C2H067Q01	0.36	C2H067Q01	0.42	C2H067Q01	0.44	C2H067Q01	mg l^-1
NO3(N)	7	0.02	C2H067Q01	0.02	C2H067Q01	3.337	C2H067Q01	6.313	C2H067Q01	mg l^-1
Sulphate	7	15.9	C2H067Q01	39.2	C2H067Q01	276.5	C2H067Q01	334.5	C2H067Q01	mg l^-1
Chloride	7	13	C2H067Q01	48.8	C2H067Q01	102.4	C2H067Q01	140.6	C2H067Q01	mg l^-1
Sodium	7	22.4	C2H067Q01	61.6	C2H067Q01	100.9	C2H067Q01	117.9	C2H067Q01	mg l^-1
Magnesium	7	3.3	C2H067Q01	12.1	C2H067Q01	44	C2H067Q01	48	C2H067Q01	mg l^-1
TDS	7	170	C2H067Q01	427	C2H067Q01	863	C2H067Q01	939	C2H067Q01	mg l^-1
Conductivity	7	19.1	C2H067Q01	57	C2H067Q01	116.9	C2H067Q01	127.3	C2H067Q01	mS m^-1

(12) Catchment C25C: Total number of "H...Q" (flow gauging, quality) stations = 5.

Station total n
samples description map
code

C2H065Q01 773 Leeudoring Spruit at Klipspruit 8

C2H061Q01 1518 Vaal River at Klipplaatdrift 9

C2H022Q01 4355 Vaal River at Balkfontein 10

C2H017Q01 4 Vaal River at Killarney-Commandodrift 11

C2H067Q01 127 at Leegte on Sandspruit 12

Station	total n samples	description	map code
C2H065Q01	773	Leeudoring Spruit at Klipspruit	8
C2H061Q01	1518	Vaal River at Klipplaatdrift	9
C2H022Q01	4355	Vaal River at Balkfontein	10
C2H017Q01	4	Vaal River at Killarney-Commandodrift	11
C2H067Q01	127	at Leegte on Sandspruit	12

C25C - Stations used: 5, Samples selected: 384 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 384 7.15 C2H065Q01 8.24 C2H061Q01 8.82 C2H061Q01 9.24 C2H061Q01 -log [H⁺]

Fluoride 384 0.05 C2H061Q01 0.3 C2H061Q01 0.4 C2H061Q01 1.4 C2H065Q01 mg l^-1

NO3(N) 384 0.02 C2H065Q01 0.055 C2H061Q01 0.471 C2H061Q01 6.313 C2H067Q01 mg l^-1

Sulphate 384 2 C2H065Q01 137.1 C2H061Q01 221.4 C2H061Q01 334.5 C2H067Q01 mg l^-1

Chloride 384 2.5 C2H065Q01 48.8 C2H067Q01 83.5 C2H061Q01 140.6 C2H067Q01 mg l^-1

Sodium 384 6.3 C2H065Q01 54.7 C2H061Q01 80 C2H061Q01 117.9 C2H067Q01 mg l^-1

Magnesium 384 2.1 C2H065Q01 24.9 C2H065Q01 33.2 C2H061Q01 61.7 C2H061Q01 mg l^-1

TDS 384 104 C2H065Q01 523 C2H065Q01 704 C2H061Q01 939 C2H067Q01 mg l^-1

Conductivity 384 11.8 C2H065Q01 70 C2H061Q01 98.8 C2H061Q01 127.3 C2H067Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C25C n=384 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	384	7.15	C2H065Q01	8.24	C2H061Q01	8.82	C2H061Q01	9.24	C2H061Q01	-log [H⁺]
Fluoride	384	0.05	C2H061Q01	0.3	C2H061Q01	0.4	C2H061Q01	1.4	C2H065Q01	mg l^-1
NO3(N)	384	0.02	C2H065Q01	0.055	C2H061Q01	0.471	C2H061Q01	6.313	C2H067Q01	mg l^-1
Sulphate	384	2	C2H065Q01	137.1	C2H061Q01	221.4	C2H061Q01	334.5	C2H067Q01	mg l^-1
Chloride	384	2.5	C2H065Q01	48.8	C2H067Q01	83.5	C2H061Q01	140.6	C2H067Q01	mg l^-1
Sodium	384	6.3	C2H065Q01	54.7	C2H061Q01	80	C2H061Q01	117.9	C2H067Q01	mg l^-1
Magnesium	384	2.1	C2H065Q01	24.9	C2H065Q01	33.2	C2H061Q01	61.7	C2H061Q01	mg l^-1
TDS	384	104	C2H065Q01	523	C2H065Q01	704	C2H061Q01	939	C2H067Q01	mg l^-1
Conductivity	384	11.8	C2H065Q01	70	C2H061Q01	98.8	C2H061Q01	127.3	C2H067Q01	mS m^-1

(13) Catchment C25D: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C2H066Q01 690 Makwassie Spruit at Vliegekraal 13

Station	total n samples	description	map code
C2H066Q01	690	Makwassie Spruit at Vliegekraal	13

C25D - Stations used: 1, Samples selected: 101 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 101 7.08 C2H066Q01 8.21 C2H066Q01 8.48 C2H066Q01 8.68 C2H066Q01 -log [H⁺]

Fluoride 101 0.23 C2H066Q01 0.4 C2H066Q01 0.46 C2H066Q01 0.55 C2H066Q01 mg l^-1

NO3(N) 101 0.02 C2H066Q01 0.04 C2H066Q01 0.141 C2H066Q01 0.749 C2H066Q01 mg l^-1

Sulphate 101 9.7 C2H066Q01 18.3 C2H066Q01 27.4 C2H066Q01 33.8 C2H066Q01 mg l^-1

Chloride 101 8.5 C2H066Q01 23.6 C2H066Q01 49.2 C2H066Q01 85.5 C2H066Q01 mg l^-1

Sodium 101 12.1 C2H066Q01 33.7 C2H066Q01 56.2 C2H066Q01 128.6 C2H066Q01 mg l^-1

Magnesium 101 2.9 C2H066Q01 13.8 C2H066Q01 25.6 C2H066Q01 28.9 C2H066Q01 mg l^-1

TDS 101 143 C2H066Q01 331 C2H066Q01 476 C2H066Q01 678 C2H066Q01 mg l^-1

Conductivity 101 19.8 C2H066Q01 43.6 C2H066Q01 62.9 C2H066Q01 86 C2H066Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C25D n=101 Class 1: I(TDS)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	101	7.08	C2H066Q01	8.21	C2H066Q01	8.48	C2H066Q01	8.68	C2H066Q01	-log [H⁺]
Fluoride	101	0.23	C2H066Q01	0.4	C2H066Q01	0.46	C2H066Q01	0.55	C2H066Q01	mg l^-1
NO3(N)	101	0.02	C2H066Q01	0.04	C2H066Q01	0.141	C2H066Q01	0.749	C2H066Q01	mg l^-1
Sulphate	101	9.7	C2H066Q01	18.3	C2H066Q01	27.4	C2H066Q01	33.8	C2H066Q01	mg l^-1
Chloride	101	8.5	C2H066Q01	23.6	C2H066Q01	49.2	C2H066Q01	85.5	C2H066Q01	mg l^-1
Sodium	101	12.1	C2H066Q01	33.7	C2H066Q01	56.2	C2H066Q01	128.6	C2H066Q01	mg l^-1
Magnesium	101	2.9	C2H066Q01	13.8	C2H066Q01	25.6	C2H066Q01	28.9	C2H066Q01	mg l^-1
TDS	101	143	C2H066Q01	331	C2H066Q01	476	C2H066Q01	678	C2H066Q01	mg l^-1
Conductivity	101	19.8	C2H066Q01	43.6	C2H066Q01	62.9	C2H066Q01	86	C2H066Q01	mS m^-1

(17) Catchment C41B: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C4H021Q01 6 Klein-Vet River at Roadbridge Raphidam 2 14

Station	total n samples	description	map code
C4H021Q01	6	Klein-Vet River at Roadbridge Raphidam 2	14

C41B - not classified: 3 samples between 2001-01-01 and 2005-12-31, 3 valid samples. Require at least 5.

(18) Catchment C41C: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C4H023Q01 dam Groot-Vet River U-S Erfnis Dam Strydomfo none

Station	total n samples	description	map code
C4H023Q01	dam	Groot-Vet River U-S Erfnis Dam Strydomfo	none

C41C - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(20) Catchment C41E: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C4H009Q01 dam Erfenis Dam on Great Vet River: Left Can none

C4H010Q01 dam Erfenis Dam on Great Vet River: Down Str none

Station	total n samples	description	map code
C4H009Q01	dam	Erfenis Dam on Great Vet River: Left Can	none
C4H010Q01	dam	Erfenis Dam on Great Vet River: Down Str	none

C41E - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(22) Catchment C41G: Total number of "H...Q" (flow gauging, quality) stations = 3.

Station total n
samples description map
code

C4H019Q01 0 De Hoop-at Weir none

C4H009Q01 dam Erfenis Dam on Great Vet River: Left Can none

C4H010Q01 dam Erfenis Dam on Great Vet River: Down Str none

Station	total n samples	description	map code
C4H019Q01	0	De Hoop-at Weir	none
C4H009Q01	dam	Erfenis Dam on Great Vet River: Left Can	none
C4H010Q01	dam	Erfenis Dam on Great Vet River: Down Str	none

(24) Catchment C41J: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C4H015Q01 0 Vaalkoppies on Vet none

Station	total n samples	description	map code
C4H015Q01	0	Vaalkoppies on Vet	none

(28) Catchment C42D: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C4H022Q01 14 at Vlakplaas U-S Allemanskraal on Sand R 15

Station	total n samples	description	map code
C4H022Q01	14	at Vlakplaas U-S Allemanskraal on Sand R	15

C42D - Stations used: 1, Samples selected: 7 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 7 7.69 C4H022Q01 8.14 C4H022Q01 8.49 C4H022Q01 8.58 C4H022Q01 -log [H⁺]

Fluoride 7 0.1 C4H022Q01 0.32 C4H022Q01 0.4 C4H022Q01 0.4 C4H022Q01 mg l^-1

NO3(N) 7 0.02 C4H022Q01 0.02 C4H022Q01 2.125 C4H022Q01 6.816 C4H022Q01 mg l^-1

Sulphate 7 12.4 C4H022Q01 13.8 C4H022Q01 20.8 C4H022Q01 23.2 C4H022Q01 mg l^-1

Chloride 7 13.4 C4H022Q01 15.4 C4H022Q01 26.6 C4H022Q01 39.3 C4H022Q01 mg l^-1

Sodium 7 26.4 C4H022Q01 41.8 C4H022Q01 68.9 C4H022Q01 93.2 C4H022Q01 mg l^-1

Magnesium 7 5.2 C4H022Q01 8.8 C4H022Q01 16.3 C4H022Q01 21.9 C4H022Q01 mg l^-1

TDS 7 225 C4H022Q01 303 C4H022Q01 476 C4H022Q01 574 C4H022Q01 mg l^-1

Conductivity 7 28 C4H022Q01 39.4 C4H022Q01 59.7 C4H022Q01 71 C4H022Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C42D n=7 Class 1: I(TDS)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	7	7.69	C4H022Q01	8.14	C4H022Q01	8.49	C4H022Q01	8.58	C4H022Q01	-log [H⁺]
Fluoride	7	0.1	C4H022Q01	0.32	C4H022Q01	0.4	C4H022Q01	0.4	C4H022Q01	mg l^-1
NO3(N)	7	0.02	C4H022Q01	0.02	C4H022Q01	2.125	C4H022Q01	6.816	C4H022Q01	mg l^-1
Sulphate	7	12.4	C4H022Q01	13.8	C4H022Q01	20.8	C4H022Q01	23.2	C4H022Q01	mg l^-1
Chloride	7	13.4	C4H022Q01	15.4	C4H022Q01	26.6	C4H022Q01	39.3	C4H022Q01	mg l^-1
Sodium	7	26.4	C4H022Q01	41.8	C4H022Q01	68.9	C4H022Q01	93.2	C4H022Q01	mg l^-1
Magnesium	7	5.2	C4H022Q01	8.8	C4H022Q01	16.3	C4H022Q01	21.9	C4H022Q01	mg l^-1
TDS	7	225	C4H022Q01	303	C4H022Q01	476	C4H022Q01	574	C4H022Q01	mg l^-1
Conductivity	7	28	C4H022Q01	39.4	C4H022Q01	59.7	C4H022Q01	71	C4H022Q01	mS m^-1

(29) Catchment C42E: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C4H008Q01 dam Downstream Weir of Allemanskraal Dam on none

C4H007Q01 dam Allemanskraal Dam on Sand River: Left CA none

Station	total n samples	description	map code
C4H008Q01	dam	Downstream Weir of Allemanskraal Dam on	none
C4H007Q01	dam	Allemanskraal Dam on Sand River: Left CA	none

C42E - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(31) Catchment C42G: Total number of "H...Q" (flow gauging, quality) stations = 3.

Station total n
samples description map
code

C4H020Q01 13 Sand River at Road Bridge U-S Waterfall 16

C4H008Q01 dam Downstream Weir of Allemanskraal Dam on none

C4H007Q01 dam Allemanskraal Dam on Sand River: Left CA none

Station	total n samples	description	map code
C4H020Q01	13	Sand River at Road Bridge U-S Waterfall	16
C4H008Q01	dam	Downstream Weir of Allemanskraal Dam on	none
C4H007Q01	dam	Allemanskraal Dam on Sand River: Left CA	none

C42G - Stations used: 1, Samples selected: 6 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 6 7.82 C4H020Q01 8.15 C4H020Q01 8.3 C4H020Q01 8.38 C4H020Q01 -log [H⁺]

Fluoride 6 0.23 C4H020Q01 0.29 C4H020Q01 0.39 C4H020Q01 0.45 C4H020Q01 mg l^-1

NO3(N) 6 0.02 C4H020Q01 0.02 C4H020Q01 0.071 C4H020Q01 0.095 C4H020Q01 mg l^-1

Sulphate 6 11 C4H020Q01 13.1 C4H020Q01 17.9 C4H020Q01 19.9 C4H020Q01 mg l^-1

Chloride 6 5 C4H020Q01 9.1 C4H020Q01 12 C4H020Q01 13.1 C4H020Q01 mg l^-1

Sodium 6 19.7 C4H020Q01 20.5 C4H020Q01 27.1 C4H020Q01 35.8 C4H020Q01 mg l^-1

Magnesium 6 8.4 C4H020Q01 9.6 C4H020Q01 11.8 C4H020Q01 11.9 C4H020Q01 mg l^-1

TDS 6 223 C4H020Q01 234 C4H020Q01 293 C4H020Q01 315 C4H020Q01 mg l^-1

Conductivity 6 29.1 C4H020Q01 29.7 C4H020Q01 36.9 C4H020Q01 38.6 C4H020Q01 mS m^-1

Summary of classification: C42G n=6 Class 0

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	6	7.82	C4H020Q01	8.15	C4H020Q01	8.3	C4H020Q01	8.38	C4H020Q01	-log [H⁺]
Fluoride	6	0.23	C4H020Q01	0.29	C4H020Q01	0.39	C4H020Q01	0.45	C4H020Q01	mg l^-1
NO3(N)	6	0.02	C4H020Q01	0.02	C4H020Q01	0.071	C4H020Q01	0.095	C4H020Q01	mg l^-1
Sulphate	6	11	C4H020Q01	13.1	C4H020Q01	17.9	C4H020Q01	19.9	C4H020Q01	mg l^-1
Chloride	6	5	C4H020Q01	9.1	C4H020Q01	12	C4H020Q01	13.1	C4H020Q01	mg l^-1
Sodium	6	19.7	C4H020Q01	20.5	C4H020Q01	27.1	C4H020Q01	35.8	C4H020Q01	mg l^-1
Magnesium	6	8.4	C4H020Q01	9.6	C4H020Q01	11.8	C4H020Q01	11.9	C4H020Q01	mg l^-1
TDS	6	223	C4H020Q01	234	C4H020Q01	293	C4H020Q01	315	C4H020Q01	mg l^-1
Conductivity	6	29.1	C4H020Q01	29.7	C4H020Q01	36.9	C4H020Q01	38.6	C4H020Q01	mS m^-1

(32) Catchment C42H: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C4H025Q01 12 at Virginia 100 M D-S of Weir on Sand Ri 17

Station	total n samples	description	map code
C4H025Q01	12	at Virginia 100 M D-S of Weir on Sand Ri	17

C42H - Stations used: 1, Samples selected: 5 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 5 8.2 C4H025Q01 8.24 C4H025Q01 8.35 C4H025Q01 8.43 C4H025Q01 -log [H⁺]

Fluoride 5 0.22 C4H025Q01 0.27 C4H025Q01 0.32 C4H025Q01 0.36 C4H025Q01 mg l^-1

NO3(N) 5 0.02 C4H025Q01 0.02 C4H025Q01 0.02 C4H025Q01 0.02 C4H025Q01 mg l^-1

Sulphate 5 17.8 C4H025Q01 17.8 C4H025Q01 23.9 C4H025Q01 26 C4H025Q01 mg l^-1

Chloride 5 13 C4H025Q01 18.9 C4H025Q01 22.6 C4H025Q01 25 C4H025Q01 mg l^-1

Sodium 5 26.9 C4H025Q01 27 C4H025Q01 33.7 C4H025Q01 37.8 C4H025Q01 mg l^-1

Magnesium 5 10.4 C4H025Q01 13.2 C4H025Q01 17.9 C4H025Q01 18.2 C4H025Q01 mg l^-1

TDS 5 243 C4H025Q01 289 C4H025Q01 363 C4H025Q01 390 C4H025Q01 mg l^-1

Conductivity 5 31.4 C4H025Q01 35.7 C4H025Q01 48.4 C4H025Q01 51.7 C4H025Q01 mS m^-1

Summary of classification: C42H n=5 Class 0

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	5	8.2	C4H025Q01	8.24	C4H025Q01	8.35	C4H025Q01	8.43	C4H025Q01	-log [H⁺]
Fluoride	5	0.22	C4H025Q01	0.27	C4H025Q01	0.32	C4H025Q01	0.36	C4H025Q01	mg l^-1
NO3(N)	5	0.02	C4H025Q01	0.02	C4H025Q01	0.02	C4H025Q01	0.02	C4H025Q01	mg l^-1
Sulphate	5	17.8	C4H025Q01	17.8	C4H025Q01	23.9	C4H025Q01	26	C4H025Q01	mg l^-1
Chloride	5	13	C4H025Q01	18.9	C4H025Q01	22.6	C4H025Q01	25	C4H025Q01	mg l^-1
Sodium	5	26.9	C4H025Q01	27	C4H025Q01	33.7	C4H025Q01	37.8	C4H025Q01	mg l^-1
Magnesium	5	10.4	C4H025Q01	13.2	C4H025Q01	17.9	C4H025Q01	18.2	C4H025Q01	mg l^-1
TDS	5	243	C4H025Q01	289	C4H025Q01	363	C4H025Q01	390	C4H025Q01	mg l^-1
Conductivity	5	31.4	C4H025Q01	35.7	C4H025Q01	48.4	C4H025Q01	51.7	C4H025Q01	mS m^-1

(33) Catchment C42J: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C4H018Q01 canal Mosterd Canal at Vermeulenskraal Noord-V none

C4H025Q01 12 at Virginia 100 M D-S of Weir on Sand Ri 18

Station	total n samples	description	map code
C4H018Q01	canal	Mosterd Canal at Vermeulenskraal Noord-V	none
C4H025Q01	12	at Virginia 100 M D-S of Weir on Sand Ri	18

C42J - Stations used: 1, Samples selected: 5 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 5 8.2 C4H025Q01 8.24 C4H025Q01 8.35 C4H025Q01 8.43 C4H025Q01 -log [H⁺]

Fluoride 5 0.22 C4H025Q01 0.27 C4H025Q01 0.32 C4H025Q01 0.36 C4H025Q01 mg l^-1

NO3(N) 5 0.02 C4H025Q01 0.02 C4H025Q01 0.02 C4H025Q01 0.02 C4H025Q01 mg l^-1

Sulphate 5 17.8 C4H025Q01 17.8 C4H025Q01 23.9 C4H025Q01 26 C4H025Q01 mg l^-1

Chloride 5 13 C4H025Q01 18.9 C4H025Q01 22.6 C4H025Q01 25 C4H025Q01 mg l^-1

Sodium 5 26.9 C4H025Q01 27 C4H025Q01 33.7 C4H025Q01 37.8 C4H025Q01 mg l^-1

Magnesium 5 10.4 C4H025Q01 13.2 C4H025Q01 17.9 C4H025Q01 18.2 C4H025Q01 mg l^-1

TDS 5 243 C4H025Q01 289 C4H025Q01 363 C4H025Q01 390 C4H025Q01 mg l^-1

Conductivity 5 31.4 C4H025Q01 35.7 C4H025Q01 48.4 C4H025Q01 51.7 C4H025Q01 mS m^-1

Summary of classification: C42J n=5 Class 0

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	5	8.2	C4H025Q01	8.24	C4H025Q01	8.35	C4H025Q01	8.43	C4H025Q01	-log [H⁺]
Fluoride	5	0.22	C4H025Q01	0.27	C4H025Q01	0.32	C4H025Q01	0.36	C4H025Q01	mg l^-1
NO3(N)	5	0.02	C4H025Q01	0.02	C4H025Q01	0.02	C4H025Q01	0.02	C4H025Q01	mg l^-1
Sulphate	5	17.8	C4H025Q01	17.8	C4H025Q01	23.9	C4H025Q01	26	C4H025Q01	mg l^-1
Chloride	5	13	C4H025Q01	18.9	C4H025Q01	22.6	C4H025Q01	25	C4H025Q01	mg l^-1
Sodium	5	26.9	C4H025Q01	27	C4H025Q01	33.7	C4H025Q01	37.8	C4H025Q01	mg l^-1
Magnesium	5	10.4	C4H025Q01	13.2	C4H025Q01	17.9	C4H025Q01	18.2	C4H025Q01	mg l^-1
TDS	5	243	C4H025Q01	289	C4H025Q01	363	C4H025Q01	390	C4H025Q01	mg l^-1
Conductivity	5	31.4	C4H025Q01	35.7	C4H025Q01	48.4	C4H025Q01	51.7	C4H025Q01	mS m^-1

(34) Catchment C42K: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C4H017Q01 102 Sand River at Doringrivier-Bloudrif 19

Station	total n samples	description	map code
C4H017Q01	102	Sand River at Doringrivier-Bloudrif	19

C42K - Stations used: 1, Samples selected: 17 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 17 7.72 C4H017Q01 8.02 C4H017Q01 8.51 C4H017Q01 8.57 C4H017Q01 -log [H⁺]

Fluoride 17 0.29 C4H017Q01 0.34 C4H017Q01 0.39 C4H017Q01 0.44 C4H017Q01 mg l^-1

NO3(N) 17 0.04 C4H017Q01 0.055 C4H017Q01 0.72 C4H017Q01 1.127 C4H017Q01 mg l^-1

Sulphate 17 70.7 C4H017Q01 151.5 C4H017Q01 178.1 C4H017Q01 213.7 C4H017Q01 mg l^-1

Chloride 17 183.6 C4H017Q01 334.1 C4H017Q01 388.6 C4H017Q01 420.9 C4H017Q01 mg l^-1

Sodium 17 82.7 C4H017Q01 155 C4H017Q01 170.3 C4H017Q01 216.9 C4H017Q01 mg l^-1

Magnesium 17 25.9 C4H017Q01 51.8 C4H017Q01 58.4 C4H017Q01 59.1 C4H017Q01 mg l^-1

TDS 17 563 C4H017Q01 990 C4H017Q01 1100 C4H017Q01 1178 C4H017Q01 mg l^-1

Conductivity 17 93.8 C4H017Q01 179 C4H017Q01 187.5 C4H017Q01 197 C4H017Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C42K n=17 Class 2: I(Na Mg) II(Cl TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	17	7.72	C4H017Q01	8.02	C4H017Q01	8.51	C4H017Q01	8.57	C4H017Q01	-log [H⁺]
Fluoride	17	0.29	C4H017Q01	0.34	C4H017Q01	0.39	C4H017Q01	0.44	C4H017Q01	mg l^-1
NO3(N)	17	0.04	C4H017Q01	0.055	C4H017Q01	0.72	C4H017Q01	1.127	C4H017Q01	mg l^-1
Sulphate	17	70.7	C4H017Q01	151.5	C4H017Q01	178.1	C4H017Q01	213.7	C4H017Q01	mg l^-1
Chloride	17	183.6	C4H017Q01	334.1	C4H017Q01	388.6	C4H017Q01	420.9	C4H017Q01	mg l^-1
Sodium	17	82.7	C4H017Q01	155	C4H017Q01	170.3	C4H017Q01	216.9	C4H017Q01	mg l^-1
Magnesium	17	25.9	C4H017Q01	51.8	C4H017Q01	58.4	C4H017Q01	59.1	C4H017Q01	mg l^-1
TDS	17	563	C4H017Q01	990	C4H017Q01	1100	C4H017Q01	1178	C4H017Q01	mg l^-1
Conductivity	17	93.8	C4H017Q01	179	C4H017Q01	187.5	C4H017Q01	197	C4H017Q01	mS m^-1

(35) Catchment C42L: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C4H017Q01 102 Sand River at Doringrivier-Bloudrif 20

C4H024Q01 12 @ Jakhalskop Rd Bridge D-S Bloudrif on S 21

Station	total n samples	description	map code
C4H017Q01	102	Sand River at Doringrivier-Bloudrif	20
C4H024Q01	12	@ Jakhalskop Rd Bridge D-S Bloudrif on S	21

C42L - Stations used: 2, Samples selected: 23 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 23 7.72 C4H017Q01 8.07 C4H024Q01 8.48 C4H017Q01 8.57 C4H017Q01 -log [H⁺]

Fluoride 23 0.24 C4H024Q01 0.33 C4H017Q01 0.39 C4H017Q01 0.44 C4H017Q01 mg l^-1

NO3(N) 23 0.02 C4H024Q01 0.055 C4H017Q01 0.896 C4H017Q01 3.13 C4H024Q01 mg l^-1

Sulphate 23 70.7 C4H017Q01 148.3 C4H024Q01 200.6 C4H024Q01 268.4 C4H024Q01 mg l^-1

Chloride 23 178.6 C4H024Q01 319.8 C4H017Q01 378.9 C4H017Q01 420.9 C4H017Q01 mg l^-1

Sodium 23 82.7 C4H017Q01 154.8 C4H017Q01 173.5 C4H024Q01 216.9 C4H017Q01 mg l^-1

Magnesium 23 25.9 C4H017Q01 47 C4H017Q01 57.7 C4H017Q01 59.1 C4H017Q01 mg l^-1

TDS 23 563 C4H017Q01 984 C4H017Q01 1105 C4H017Q01 1178 C4H017Q01 mg l^-1

Conductivity 23 93.8 C4H017Q01 178 C4H017Q01 188.8 C4H024Q01 197 C4H017Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C42L n=23 Class 2: I(SO4 Na Mg) II(Cl TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	23	7.72	C4H017Q01	8.07	C4H024Q01	8.48	C4H017Q01	8.57	C4H017Q01	-log [H⁺]
Fluoride	23	0.24	C4H024Q01	0.33	C4H017Q01	0.39	C4H017Q01	0.44	C4H017Q01	mg l^-1
NO3(N)	23	0.02	C4H024Q01	0.055	C4H017Q01	0.896	C4H017Q01	3.13	C4H024Q01	mg l^-1
Sulphate	23	70.7	C4H017Q01	148.3	C4H024Q01	200.6	C4H024Q01	268.4	C4H024Q01	mg l^-1
Chloride	23	178.6	C4H024Q01	319.8	C4H017Q01	378.9	C4H017Q01	420.9	C4H017Q01	mg l^-1
Sodium	23	82.7	C4H017Q01	154.8	C4H017Q01	173.5	C4H024Q01	216.9	C4H017Q01	mg l^-1
Magnesium	23	25.9	C4H017Q01	47	C4H017Q01	57.7	C4H017Q01	59.1	C4H017Q01	mg l^-1
TDS	23	563	C4H017Q01	984	C4H017Q01	1105	C4H017Q01	1178	C4H017Q01	mg l^-1
Conductivity	23	93.8	C4H017Q01	178	C4H017Q01	188.8	C4H024Q01	197	C4H017Q01	mS m^-1

(36) Catchment C43A: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C4H004Q01 1560 at Fazantkraal Nooitgedacht on Vetrivier 22

Station	total n samples	description	map code
C4H004Q01	1560	at Fazantkraal Nooitgedacht on Vetrivier	22

C43A - Stations used: 1, Samples selected: 6 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 6 7.58 C4H004Q01 8.13 C4H004Q01 8.67 C4H004Q01 9.22 C4H004Q01 -log [H⁺]

Fluoride 6 0.26 C4H004Q01 0.32 C4H004Q01 0.36 C4H004Q01 0.37 C4H004Q01 mg l^-1

NO3(N) 6 0.02 C4H004Q01 0.02 C4H004Q01 0.055 C4H004Q01 0.055 C4H004Q01 mg l^-1

Sulphate 6 12.6 C4H004Q01 18.6 C4H004Q01 49.4 C4H004Q01 61.8 C4H004Q01 mg l^-1

Chloride 6 13.9 C4H004Q01 31 C4H004Q01 70.2 C4H004Q01 85.2 C4H004Q01 mg l^-1

Sodium 6 24.4 C4H004Q01 29.3 C4H004Q01 57.6 C4H004Q01 71.7 C4H004Q01 mg l^-1

Magnesium 6 8.9 C4H004Q01 10.3 C4H004Q01 17.2 C4H004Q01 22.7 C4H004Q01 mg l^-1

TDS 6 233 C4H004Q01 258 C4H004Q01 412 C4H004Q01 499 C4H004Q01 mg l^-1

Conductivity 6 30.8 C4H004Q01 38 C4H004Q01 58.5 C4H004Q01 66.5 C4H004Q01 mS m^-1

Summary of classification: C43A n=6 Class 0

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	6	7.58	C4H004Q01	8.13	C4H004Q01	8.67	C4H004Q01	9.22	C4H004Q01	-log [H⁺]
Fluoride	6	0.26	C4H004Q01	0.32	C4H004Q01	0.36	C4H004Q01	0.37	C4H004Q01	mg l^-1
NO3(N)	6	0.02	C4H004Q01	0.02	C4H004Q01	0.055	C4H004Q01	0.055	C4H004Q01	mg l^-1
Sulphate	6	12.6	C4H004Q01	18.6	C4H004Q01	49.4	C4H004Q01	61.8	C4H004Q01	mg l^-1
Chloride	6	13.9	C4H004Q01	31	C4H004Q01	70.2	C4H004Q01	85.2	C4H004Q01	mg l^-1
Sodium	6	24.4	C4H004Q01	29.3	C4H004Q01	57.6	C4H004Q01	71.7	C4H004Q01	mg l^-1
Magnesium	6	8.9	C4H004Q01	10.3	C4H004Q01	17.2	C4H004Q01	22.7	C4H004Q01	mg l^-1
TDS	6	233	C4H004Q01	258	C4H004Q01	412	C4H004Q01	499	C4H004Q01	mg l^-1
Conductivity	6	30.8	C4H004Q01	38	C4H004Q01	58.5	C4H004Q01	66.5	C4H004Q01	mS m^-1

(38) Catchment C43C: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C4H002Q01 0 Floorsdrift Hoopstad none

C4H004Q01 1560 at Fazantkraal Nooitgedacht on Vetrivier 23

Station	total n samples	description	map code
C4H002Q01	0	Floorsdrift Hoopstad	none
C4H004Q01	1560	at Fazantkraal Nooitgedacht on Vetrivier	23

C43C - Stations used: 2, Samples selected: 6 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 6 7.58 C4H004Q01 8.13 C4H004Q01 8.67 C4H004Q01 9.22 C4H004Q01 -log [H⁺]

Fluoride 6 0.26 C4H004Q01 0.32 C4H004Q01 0.36 C4H004Q01 0.37 C4H004Q01 mg l^-1

NO3(N) 6 0.02 C4H004Q01 0.02 C4H004Q01 0.055 C4H004Q01 0.055 C4H004Q01 mg l^-1

Sulphate 6 12.6 C4H004Q01 18.6 C4H004Q01 49.4 C4H004Q01 61.8 C4H004Q01 mg l^-1

Chloride 6 13.9 C4H004Q01 31 C4H004Q01 70.2 C4H004Q01 85.2 C4H004Q01 mg l^-1

Sodium 6 24.4 C4H004Q01 29.3 C4H004Q01 57.6 C4H004Q01 71.7 C4H004Q01 mg l^-1

Magnesium 6 8.9 C4H004Q01 10.3 C4H004Q01 17.2 C4H004Q01 22.7 C4H004Q01 mg l^-1

TDS 6 233 C4H004Q01 258 C4H004Q01 412 C4H004Q01 499 C4H004Q01 mg l^-1

Conductivity 6 30.8 C4H004Q01 38 C4H004Q01 58.5 C4H004Q01 66.5 C4H004Q01 mS m^-1

Summary of classification: C43C n=6 Class 0

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	6	7.58	C4H004Q01	8.13	C4H004Q01	8.67	C4H004Q01	9.22	C4H004Q01	-log [H⁺]
Fluoride	6	0.26	C4H004Q01	0.32	C4H004Q01	0.36	C4H004Q01	0.37	C4H004Q01	mg l^-1
NO3(N)	6	0.02	C4H004Q01	0.02	C4H004Q01	0.055	C4H004Q01	0.055	C4H004Q01	mg l^-1
Sulphate	6	12.6	C4H004Q01	18.6	C4H004Q01	49.4	C4H004Q01	61.8	C4H004Q01	mg l^-1
Chloride	6	13.9	C4H004Q01	31	C4H004Q01	70.2	C4H004Q01	85.2	C4H004Q01	mg l^-1
Sodium	6	24.4	C4H004Q01	29.3	C4H004Q01	57.6	C4H004Q01	71.7	C4H004Q01	mg l^-1
Magnesium	6	8.9	C4H004Q01	10.3	C4H004Q01	17.2	C4H004Q01	22.7	C4H004Q01	mg l^-1
TDS	6	233	C4H004Q01	258	C4H004Q01	412	C4H004Q01	499	C4H004Q01	mg l^-1
Conductivity	6	30.8	C4H004Q01	38	C4H004Q01	58.5	C4H004Q01	66.5	C4H004Q01	mS m^-1

(39) Catchment C43D: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C4H005Q01 608 Vet River at Floorsdrift-Hoopstad 24

C4H002Q01 0 Floorsdrift Hoopstad none

Station	total n samples	description	map code
C4H005Q01	608	Vet River at Floorsdrift-Hoopstad	24
C4H002Q01	0	Floorsdrift Hoopstad	none

C43D - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(40) Catchment C60A: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C6H004Q01 107 Vals River at Klipfontein-Lindley 25

Station	total n samples	description	map code
C6H004Q01	107	Vals River at Klipfontein-Lindley	25

C60A - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(41) Catchment C60B: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C6H004Q01 107 Vals River at Klipfontein-Lindley 26

Station	total n samples	description	map code
C6H004Q01	107	Vals River at Klipfontein-Lindley	26

C60B - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(43) Catchment C60D: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C6H007Q01 558 Vals River at Kroonstad Bridge Old Bare 27

Station	total n samples	description	map code
C6H007Q01	558	Vals River at Kroonstad Bridge Old Bare	27

C60D - Stations used: 1, Samples selected: 253 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 253 7.06 C6H007Q01 8.15 C6H007Q01 8.47 C6H007Q01 8.96 C6H007Q01 -log [H⁺]

Fluoride 253 0.1 C6H007Q01 0.26 C6H007Q01 0.45 C6H007Q01 0.56 C6H007Q01 mg l^-1

NO3(N) 253 0.02 C6H007Q01 0.055 C6H007Q01 0.215 C6H007Q01 0.747 C6H007Q01 mg l^-1

Sulphate 253 9.2 C6H007Q01 26.3 C6H007Q01 38.3 C6H007Q01 62.8 C6H007Q01 mg l^-1

Chloride 253 5 C6H007Q01 17.2 C6H007Q01 22.6 C6H007Q01 39.3 C6H007Q01 mg l^-1

Sodium 253 8.5 C6H007Q01 27.2 C6H007Q01 41.1 C6H007Q01 49.6 C6H007Q01 mg l^-1

Magnesium 253 4.1 C6H007Q01 13.5 C6H007Q01 17.2 C6H007Q01 21.1 C6H007Q01 mg l^-1

TDS 253 95 C6H007Q01 285 C6H007Q01 364 C6H007Q01 429 C6H007Q01 mg l^-1

Conductivity 253 14.8 C6H007Q01 38.2 C6H007Q01 48.7 C6H007Q01 53.5 C6H007Q01 mS m^-1

Summary of classification: C60D n=253 Class 0

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	253	7.06	C6H007Q01	8.15	C6H007Q01	8.47	C6H007Q01	8.96	C6H007Q01	-log [H⁺]
Fluoride	253	0.1	C6H007Q01	0.26	C6H007Q01	0.45	C6H007Q01	0.56	C6H007Q01	mg l^-1
NO3(N)	253	0.02	C6H007Q01	0.055	C6H007Q01	0.215	C6H007Q01	0.747	C6H007Q01	mg l^-1
Sulphate	253	9.2	C6H007Q01	26.3	C6H007Q01	38.3	C6H007Q01	62.8	C6H007Q01	mg l^-1
Chloride	253	5	C6H007Q01	17.2	C6H007Q01	22.6	C6H007Q01	39.3	C6H007Q01	mg l^-1
Sodium	253	8.5	C6H007Q01	27.2	C6H007Q01	41.1	C6H007Q01	49.6	C6H007Q01	mg l^-1
Magnesium	253	4.1	C6H007Q01	13.5	C6H007Q01	17.2	C6H007Q01	21.1	C6H007Q01	mg l^-1
TDS	253	95	C6H007Q01	285	C6H007Q01	364	C6H007Q01	429	C6H007Q01	mg l^-1
Conductivity	253	14.8	C6H007Q01	38.2	C6H007Q01	48.7	C6H007Q01	53.5	C6H007Q01	mS m^-1

(46) Catchment C60G: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C6H001Q01 557 Vals River at Roodewal 28

Station	total n samples	description	map code
C6H001Q01	557	Vals River at Roodewal	28

C60G - Stations used: 1, Samples selected: 225 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 225 7.42 C6H001Q01 8.4 C6H001Q01 9.23 C6H001Q01 9.59 C6H001Q01 -log [H⁺]

Fluoride 225 0.19 C6H001Q01 0.3 C6H001Q01 0.51 C6H001Q01 0.66 C6H001Q01 mg l^-1

NO3(N) 225 0.02 C6H001Q01 0.062 C6H001Q01 2.355 C6H001Q01 19.841 C6H001Q01 mg l^-1

Sulphate 225 15.7 C6H001Q01 34.4 C6H001Q01 57.4 C6H001Q01 142 C6H001Q01 mg l^-1

Chloride 225 5 C6H001Q01 54 C6H001Q01 82 C6H001Q01 121.6 C6H001Q01 mg l^-1

Sodium 225 12.3 C6H001Q01 62.8 C6H001Q01 95 C6H001Q01 124.2 C6H001Q01 mg l^-1

Magnesium 225 4.7 C6H001Q01 16.6 C6H001Q01 23.9 C6H001Q01 27.6 C6H001Q01 mg l^-1

TDS 225 142 C6H001Q01 461 C6H001Q01 618 C6H001Q01 750 C6H001Q01 mg l^-1

Conductivity 225 20.6 C6H001Q01 61.6 C6H001Q01 81.4 C6H001Q01 93.7 C6H001Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C60G n=225 Class 1: I(pH TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	225	7.42	C6H001Q01	8.4	C6H001Q01	9.23	C6H001Q01	9.59	C6H001Q01	-log [H⁺]
Fluoride	225	0.19	C6H001Q01	0.3	C6H001Q01	0.51	C6H001Q01	0.66	C6H001Q01	mg l^-1
NO3(N)	225	0.02	C6H001Q01	0.062	C6H001Q01	2.355	C6H001Q01	19.841	C6H001Q01	mg l^-1
Sulphate	225	15.7	C6H001Q01	34.4	C6H001Q01	57.4	C6H001Q01	142	C6H001Q01	mg l^-1
Chloride	225	5	C6H001Q01	54	C6H001Q01	82	C6H001Q01	121.6	C6H001Q01	mg l^-1
Sodium	225	12.3	C6H001Q01	62.8	C6H001Q01	95	C6H001Q01	124.2	C6H001Q01	mg l^-1
Magnesium	225	4.7	C6H001Q01	16.6	C6H001Q01	23.9	C6H001Q01	27.6	C6H001Q01	mg l^-1
TDS	225	142	C6H001Q01	461	C6H001Q01	618	C6H001Q01	750	C6H001Q01	mg l^-1
Conductivity	225	20.6	C6H001Q01	61.6	C6H001Q01	81.4	C6H001Q01	93.7	C6H001Q01	mS m^-1

(48) Catchment C60J: Total number of "H...Q" (flow gauging, quality) stations = 3.

Station total n
samples description map
code

C6H002Q01 1435 Vals River at Grootdraai-Bothaville 29

C6H003Q01 473 Vals River at Mooifontein-Bothaville 30

C6H001Q01 557 Vals River at Roodewal 31

Station	total n samples	description	map code
C6H002Q01	1435	Vals River at Grootdraai-Bothaville	29
C6H003Q01	473	Vals River at Mooifontein-Bothaville	30
C6H001Q01	557	Vals River at Roodewal	31

C60J - Stations used: 3, Samples selected: 443 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 443 7.06 C6H002Q01 8.31 C6H003Q01 9.04 C6H001Q01 9.59 C6H001Q01 -log [H⁺]

Fluoride 443 0.1 C6H003Q01 0.3 C6H002Q01 0.46 C6H001Q01 0.7 C6H002Q01 mg l^-1

NO3(N) 443 0.02 C6H003Q01 0.249 C6H003Q01 2.237 C6H003Q01 19.841 C6H001Q01 mg l^-1

Sulphate 443 14.8 C6H003Q01 42 C6H002Q01 72.2 C6H003Q01 168.6 C6H002Q01 mg l^-1

Chloride 443 5 C6H001Q01 47.5 C6H003Q01 86.2 C6H003Q01 160.1 C6H002Q01 mg l^-1

Sodium 443 12.3 C6H001Q01 54.1 C6H001Q01 98.9 C6H003Q01 142.4 C6H002Q01 mg l^-1

Magnesium 443 4.7 C6H001Q01 17.7 C6H001Q01 27.3 C6H003Q01 40.3 C6H003Q01 mg l^-1

TDS 443 142 C6H001Q01 437 C6H003Q01 659 C6H002Q01 876 C6H002Q01 mg l^-1

Conductivity 443 20.6 C6H001Q01 59.6 C6H003Q01 87.6 C6H003Q01 123.7 C6H002Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C60J n=443 Class 1: I(pH TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	443	7.06	C6H002Q01	8.31	C6H003Q01	9.04	C6H001Q01	9.59	C6H001Q01	-log [H⁺]
Fluoride	443	0.1	C6H003Q01	0.3	C6H002Q01	0.46	C6H001Q01	0.7	C6H002Q01	mg l^-1
NO3(N)	443	0.02	C6H003Q01	0.249	C6H003Q01	2.237	C6H003Q01	19.841	C6H001Q01	mg l^-1
Sulphate	443	14.8	C6H003Q01	42	C6H002Q01	72.2	C6H003Q01	168.6	C6H002Q01	mg l^-1
Chloride	443	5	C6H001Q01	47.5	C6H003Q01	86.2	C6H003Q01	160.1	C6H002Q01	mg l^-1
Sodium	443	12.3	C6H001Q01	54.1	C6H001Q01	98.9	C6H003Q01	142.4	C6H002Q01	mg l^-1
Magnesium	443	4.7	C6H001Q01	17.7	C6H001Q01	27.3	C6H003Q01	40.3	C6H003Q01	mg l^-1
TDS	443	142	C6H001Q01	437	C6H003Q01	659	C6H002Q01	876	C6H002Q01	mg l^-1
Conductivity	443	20.6	C6H001Q01	59.6	C6H003Q01	87.6	C6H003Q01	123.7	C6H002Q01	mS m^-1

(51) Catchment C70C: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C7H007Q01 dam Koppies Dam on Renoster River: Right Can none

C7H013Q01 dam Koppies Dam on Renoster River: Down Stre none

Station	total n samples	description	map code
C7H007Q01	dam	Koppies Dam on Renoster River: Right Can	none
C7H013Q01	dam	Koppies Dam on Renoster River: Down Stre	none

C70C - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(52) Catchment C70D: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C7H007Q01 dam Koppies Dam on Renoster River: Right Can none

C7H013Q01 dam Koppies Dam on Renoster River: Down Stre none

Station	total n samples	description	map code
C7H007Q01	dam	Koppies Dam on Renoster River: Right Can	none
C7H013Q01	dam	Koppies Dam on Renoster River: Down Stre	none

C70D - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(55) Catchment C70G: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C7H003Q01 276 at Dankbaar Mispah on Heuningspruit 32

Station	total n samples	description	map code
C7H003Q01	276	at Dankbaar Mispah on Heuningspruit	32

C70G - Stations used: 1, Samples selected: 29 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 29 7.14 C7H003Q01 7.73 C7H003Q01 7.96 C7H003Q01 8.14 C7H003Q01 -log [H⁺]

Fluoride 29 0.18 C7H003Q01 0.21 C7H003Q01 0.26 C7H003Q01 0.36 C7H003Q01 mg l^-1

NO3(N) 29 0.02 C7H003Q01 0.02 C7H003Q01 0.068 C7H003Q01 0.097 C7H003Q01 mg l^-1

Sulphate 29 15.2 C7H003Q01 29.6 C7H003Q01 51 C7H003Q01 66 C7H003Q01 mg l^-1

Chloride 29 11.1 C7H003Q01 16.1 C7H003Q01 33.4 C7H003Q01 40.4 C7H003Q01 mg l^-1

Sodium 29 11.1 C7H003Q01 21.2 C7H003Q01 39.4 C7H003Q01 41 C7H003Q01 mg l^-1

Magnesium 29 1.7 C7H003Q01 4 C7H003Q01 6 C7H003Q01 8.1 C7H003Q01 mg l^-1

TDS 29 113 C7H003Q01 170 C7H003Q01 244 C7H003Q01 280 C7H003Q01 mg l^-1

Conductivity 29 11.9 C7H003Q01 20.9 C7H003Q01 33.7 C7H003Q01 36.4 C7H003Q01 mS m^-1

Summary of classification: C70G n=29 Class 0

(56) Catchment C70H: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C7H003Q01 276 at Dankbaar Mispah on Heuningspruit 33

C70H - Stations used: 1, Samples selected: 29 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 29 7.14 C7H003Q01 7.73 C7H003Q01 7.96 C7H003Q01 8.14 C7H003Q01 -log [H⁺]

Fluoride 29 0.18 C7H003Q01 0.21 C7H003Q01 0.26 C7H003Q01 0.36 C7H003Q01 mg l^-1

NO3(N) 29 0.02 C7H003Q01 0.02 C7H003Q01 0.068 C7H003Q01 0.097 C7H003Q01 mg l^-1

Sulphate 29 15.2 C7H003Q01 29.6 C7H003Q01 51 C7H003Q01 66 C7H003Q01 mg l^-1

Chloride 29 11.1 C7H003Q01 16.1 C7H003Q01 33.4 C7H003Q01 40.4 C7H003Q01 mg l^-1

Sodium 29 11.1 C7H003Q01 21.2 C7H003Q01 39.4 C7H003Q01 41 C7H003Q01 mg l^-1

Magnesium 29 1.7 C7H003Q01 4 C7H003Q01 6 C7H003Q01 8.1 C7H003Q01 mg l^-1

TDS 29 113 C7H003Q01 170 C7H003Q01 244 C7H003Q01 280 C7H003Q01 mg l^-1

Conductivity 29 11.9 C7H003Q01 20.9 C7H003Q01 33.7 C7H003Q01 36.4 C7H003Q01 mS m^-1

Summary of classification: C70H n=29 Class 0

(57) Catchment C70J: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C7H006Q01 1616 Renoster River at Arriesrust 34

C7H005Q01 10 Renoster River at Spes Bona 35

C70J - Stations used: 2, Samples selected: 99 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 99 7.69 C7H006Q01 8.16 C7H006Q01 8.34 C7H006Q01 8.93 C7H006Q01 -log [H⁺]

Fluoride 99 0.05 C7H006Q01 0.24 C7H006Q01 0.31 C7H006Q01 0.93 C7H006Q01 mg l^-1

NO3(N) 99 0.02 C7H006Q01 0.207 C7H006Q01 0.711 C7H006Q01 1.269 C7H006Q01 mg l^-1

Sulphate 99 10 C7H006Q01 23.6 C7H006Q01 31.3 C7H006Q01 148.2 C7H006Q01 mg l^-1

Chloride 99 5 C7H006Q01 18.7 C7H006Q01 26.5 C7H006Q01 64.5 C7H006Q01 mg l^-1

Sodium 99 11.1 C7H006Q01 25.9 C7H006Q01 32.2 C7H006Q01 62.1 C7H006Q01 mg l^-1

Magnesium 99 4.8 C7H006Q01 13.4 C7H006Q01 21.3 C7H006Q01 26.4 C7H006Q01 mg l^-1

TDS 99 125 C7H006Q01 286 C7H006Q01 366 C7H006Q01 556 C7H006Q01 mg l^-1

Conductivity 99 16.2 C7H006Q01 38.2 C7H006Q01 48.4 C7H006Q01 78.5 C7H006Q01 mS m^-1

Summary of classification: C70J n=99 Class 0

(58) Catchment C70K: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C7H006Q01 1616 Renoster River at Arriesrust 36

C70K - Stations used: 1, Samples selected: 99 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 99 7.69 C7H006Q01 8.16 C7H006Q01 8.34 C7H006Q01 8.93 C7H006Q01 -log [H⁺]

Fluoride 99 0.05 C7H006Q01 0.24 C7H006Q01 0.31 C7H006Q01 0.93 C7H006Q01 mg l^-1

NO3(N) 99 0.02 C7H006Q01 0.207 C7H006Q01 0.711 C7H006Q01 1.269 C7H006Q01 mg l^-1

Sulphate 99 10 C7H006Q01 23.6 C7H006Q01 31.3 C7H006Q01 148.2 C7H006Q01 mg l^-1

Chloride 99 5 C7H006Q01 18.7 C7H006Q01 26.5 C7H006Q01 64.5 C7H006Q01 mg l^-1

Sodium 99 11.1 C7H006Q01 25.9 C7H006Q01 32.2 C7H006Q01 62.1 C7H006Q01 mg l^-1

Magnesium 99 4.8 C7H006Q01 13.4 C7H006Q01 21.3 C7H006Q01 26.4 C7H006Q01 mg l^-1

TDS 99 125 C7H006Q01 286 C7H006Q01 366 C7H006Q01 556 C7H006Q01 mg l^-1

Conductivity 99 16.2 C7H006Q01 38.2 C7H006Q01 48.4 C7H006Q01 78.5 C7H006Q01 mS m^-1

Summary of classification: C70K n=99 Class 0

Processing dam monitoring points:

(1) Checked C2R006Q01 (Elandskuil) for valid samples...
Number of samples found = 3: less than the 5 required, so not classified.

(2) Checked C2R007Q01 (Rietspruit) for valid samples...

Quaternary C70K, dam station: C2R007Q01, Samples selected: 6 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 6 7.99 C2R007Q01 8.28 C2R007Q01 8.36 C2R007Q01 8.37 C2R007Q01 -log [H⁺]

Fluoride 6 0.1 C2R007Q01 0.1 C2R007Q01 0.21 C2R007Q01 0.21 C2R007Q01 mg l^-1

NO3(N) 6 0.055 C2R007Q01 0.121 C2R007Q01 0.183 C2R007Q01 0.198 C2R007Q01 mg l^-1

Sulphate 6 3 C2R007Q01 7.1 C2R007Q01 10.7 C2R007Q01 10.8 C2R007Q01 mg l^-1

Chloride 6 5 C2R007Q01 5 C2R007Q01 8.3 C2R007Q01 8.4 C2R007Q01 mg l^-1

Sodium 6 7.7 C2R007Q01 8.9 C2R007Q01 13 C2R007Q01 13.2 C2R007Q01 mg l^-1

Magnesium 6 15.1 C2R007Q01 23.5 C2R007Q01 35.8 C2R007Q01 36 C2R007Q01 mg l^-1

TDS 6 252 C2R007Q01 317 C2R007Q01 354 C2R007Q01 359 C2R007Q01 mg l^-1

Conductivity 6 31.7 C2R007Q01 39 C2R007Q01 43.5 C2R007Q01 44.2 C2R007Q01 mS m^-1

(3) Checked C2R002Q01 (Klerksdorp) for valid samples...
Number of samples found = 1: less than the 5 required, so not classified.

(4) Checked C7R003Q01 (Weltevrede) for valid samples...
Number of samples found = 0: less than the 5 required, so not classified.

(5) Checked C7R001Q01 (Koppies) for valid samples...

Quaternary C70K, dam station: C7R001Q01, Samples selected: 50 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 50 7.63 C7R001Q01 8.27 C7R001Q01 8.5 C7R001Q01 8.6 C7R001Q01 -log [H⁺]

Fluoride 50 0.21 C7R001Q01 0.32 C7R001Q01 0.51 C7R001Q01 0.65 C7R001Q01 mg l^-1

NO3(N) 50 0.02 C7R001Q01 0.055 C7R001Q01 0.296 C7R001Q01 2.256 C7R001Q01 mg l^-1

Sulphate 50 18.6 C7R001Q01 31.3 C7R001Q01 46 C7R001Q01 73.1 C7R001Q01 mg l^-1

Chloride 50 13.8 C7R001Q01 26.3 C7R001Q01 45.4 C7R001Q01 53.8 C7R001Q01 mg l^-1

Sodium 50 15.2 C7R001Q01 30.5 C7R001Q01 56.8 C7R001Q01 66.1 C7R001Q01 mg l^-1

Magnesium 50 7.8 C7R001Q01 16.4 C7R001Q01 23.7 C7R001Q01 26.9 C7R001Q01 mg l^-1

TDS 50 202 C7R001Q01 318 C7R001Q01 485 C7R001Q01 511 C7R001Q01 mg l^-1

Conductivity 50 23.4 C7R001Q01 43.1 C7R001Q01 63 C7R001Q01 68.9 C7R001Q01 mS m^-1

(6) Checked C7R002Q01 (Roodepoort C) for valid samples...
Number of samples found = 0: less than the 5 required, so not classified.

(7) Checked C9R002Q01 (Bloemhof) for valid samples...

Quaternary C70K, dam station: C9R002Q01, Samples selected: 189 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 189 7.1 C9R002Q01 8.09 C9R002Q01 8.31 C9R002Q01 8.63 C9R002Q01 -log [H⁺]

Fluoride 189 0.21 C9R002Q01 0.34 C9R002Q01 0.42 C9R002Q01 0.5 C9R002Q01 mg l^-1

NO3(N) 189 0.02 C9R002Q01 0.055 C9R002Q01 0.15 C9R002Q01 1.155 C9R002Q01 mg l^-1

Sulphate 189 55.4 C9R002Q01 128.1 C9R002Q01 191.5 C9R002Q01 230.3 C9R002Q01 mg l^-1

Chloride 189 22.3 C9R002Q01 51.3 C9R002Q01 74.6 C9R002Q01 100.5 C9R002Q01 mg l^-1

Sodium 189 24 C9R002Q01 50.6 C9R002Q01 72.8 C9R002Q01 98.7 C9R002Q01 mg l^-1

Magnesium 189 12.5 C9R002Q01 22.2 C9R002Q01 31.8 C9R002Q01 39.5 C9R002Q01 mg l^-1

TDS 189 270 C9R002Q01 409 C9R002Q01 589 C9R002Q01 692 C9R002Q01 mg l^-1

Conductivity 189 39.3 C9R002Q01 63.4 C9R002Q01 88 C9R002Q01 101.1 C9R002Q01 mS m^-1

(8) Checked C6R002Q01 (Serfontein) for valid samples...

Quaternary C70K, dam station: C6R002Q01, Samples selected: 94 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 94 7.26 C6R002Q01 8.15 C6R002Q01 8.39 C6R002Q01 8.6 C6R002Q01 -log [H⁺]

Fluoride 94 0.1 C6R002Q01 0.23 C6R002Q01 0.28 C6R002Q01 0.33 C6R002Q01 mg l^-1

NO3(N) 94 0.02 C6R002Q01 0.044 C6R002Q01 0.131 C6R002Q01 1.203 C6R002Q01 mg l^-1

Sulphate 94 9.9 C6R002Q01 20.7 C6R002Q01 30.5 C6R002Q01 53.7 C6R002Q01 mg l^-1

Chloride 94 5 C6R002Q01 11.6 C6R002Q01 14.4 C6R002Q01 16.1 C6R002Q01 mg l^-1

Sodium 94 9.2 C6R002Q01 21.8 C6R002Q01 27.8 C6R002Q01 36.7 C6R002Q01 mg l^-1

Magnesium 94 4.1 C6R002Q01 11.6 C6R002Q01 18.9 C6R002Q01 20.9 C6R002Q01 mg l^-1

TDS 94 110 C6R002Q01 247 C6R002Q01 360 C6R002Q01 413 C6R002Q01 mg l^-1

Conductivity 94 14.8 C6R002Q01 31.4 C6R002Q01 43.4 C6R002Q01 51.8 C6R002Q01 mS m^-1

(9) Checked C4R001Q01 (Allemanskraal) for valid samples...

Quaternary C70K, dam station: C4R001Q01, Samples selected: 6 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 6 7.91 C4R001Q01 8.07 C4R001Q01 8.24 C4R001Q01 8.3 C4R001Q01 -log [H⁺]

Fluoride 6 0.3 C4R001Q01 0.4 C4R001Q01 0.42 C4R001Q01 0.43 C4R001Q01 mg l^-1

NO3(N) 6 0.02 C4R001Q01 0.02 C4R001Q01 0.174 C4R001Q01 0.245 C4R001Q01 mg l^-1

Sulphate 6 15.9 C4R001Q01 16.9 C4R001Q01 21.7 C4R001Q01 22.2 C4R001Q01 mg l^-1

Chloride 6 5 C4R001Q01 5 C4R001Q01 12.4 C4R001Q01 12.4 C4R001Q01 mg l^-1

Sodium 6 19.2 C4R001Q01 24 C4R001Q01 27.7 C4R001Q01 28.1 C4R001Q01 mg l^-1

Magnesium 6 6.9 C4R001Q01 7.9 C4R001Q01 8.7 C4R001Q01 8.9 C4R001Q01 mg l^-1

TDS 6 200 C4R001Q01 225 C4R001Q01 246 C4R001Q01 254 C4R001Q01 mg l^-1

Conductivity 6 25.8 C4R001Q01 29 C4R001Q01 31.4 C4R001Q01 33.6 C4R001Q01 mS m^-1

(10) Checked C4R002Q01 (Erfenis) for valid samples...

Quaternary C70K, dam station: C4R002Q01, Samples selected: 37 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 37 7.46 C4R002Q01 8.01 C4R002Q01 8.3 C4R002Q01 9.07 C4R002Q01 -log [H⁺]

Fluoride 37 0.2 C4R002Q01 0.25 C4R002Q01 0.32 C4R002Q01 0.38 C4R002Q01 mg l^-1

NO3(N) 37 0.02 C4R002Q01 0.133 C4R002Q01 0.343 C4R002Q01 0.356 C4R002Q01 mg l^-1

Sulphate 37 6.9 C4R002Q01 17.4 C4R002Q01 31.7 C4R002Q01 34.5 C4R002Q01 mg l^-1

Chloride 37 5 C4R002Q01 5 C4R002Q01 10.5 C4R002Q01 11.7 C4R002Q01 mg l^-1

Sodium 37 8.3 C4R002Q01 11.3 C4R002Q01 17.5 C4R002Q01 19.8 C4R002Q01 mg l^-1

Magnesium 37 4.7 C4R002Q01 5.5 C4R002Q01 7.9 C4R002Q01 11.5 C4R002Q01 mg l^-1

TDS 37 115 C4R002Q01 148 C4R002Q01 194 C4R002Q01 238 C4R002Q01 mg l^-1

Conductivity 37 16.3 C4R002Q01 18.8 C4R002Q01 24.5 C4R002Q01 31.8 C4R002Q01 mS m^-1

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

C2R007Q01 6 1 Mg

C7R001Q01 50 1 TDS

C9R002Q01 189 1 Mg TDS EC

C6R002Q01 94 0

C4R001Q01 6 0

C4R002Q01 37 0

Finished calculations for Middle Vaal WMA at 2006-12-18 - 16:00:09

[Chemical index page] [IWQS home page]

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	29	7.14	C7H003Q01	7.73	C7H003Q01	7.96	C7H003Q01	8.14	C7H003Q01	-log [H⁺]
Fluoride	29	0.18	C7H003Q01	0.21	C7H003Q01	0.26	C7H003Q01	0.36	C7H003Q01	mg l^-1
NO3(N)	29	0.02	C7H003Q01	0.02	C7H003Q01	0.068	C7H003Q01	0.097	C7H003Q01	mg l^-1
Sulphate	29	15.2	C7H003Q01	29.6	C7H003Q01	51	C7H003Q01	66	C7H003Q01	mg l^-1
Chloride	29	11.1	C7H003Q01	16.1	C7H003Q01	33.4	C7H003Q01	40.4	C7H003Q01	mg l^-1
Sodium	29	11.1	C7H003Q01	21.2	C7H003Q01	39.4	C7H003Q01	41	C7H003Q01	mg l^-1
Magnesium	29	1.7	C7H003Q01	4	C7H003Q01	6	C7H003Q01	8.1	C7H003Q01	mg l^-1
TDS	29	113	C7H003Q01	170	C7H003Q01	244	C7H003Q01	280	C7H003Q01	mg l^-1
Conductivity	29	11.9	C7H003Q01	20.9	C7H003Q01	33.7	C7H003Q01	36.4	C7H003Q01	mS m^-1

Station	total n samples	description	map code
C7H006Q01	1616	Renoster River at Arriesrust	34
C7H005Q01	10	Renoster River at Spes Bona	35

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	99	7.69	C7H006Q01	8.16	C7H006Q01	8.34	C7H006Q01	8.93	C7H006Q01	-log [H⁺]
Fluoride	99	0.05	C7H006Q01	0.24	C7H006Q01	0.31	C7H006Q01	0.93	C7H006Q01	mg l^-1
NO3(N)	99	0.02	C7H006Q01	0.207	C7H006Q01	0.711	C7H006Q01	1.269	C7H006Q01	mg l^-1
Sulphate	99	10	C7H006Q01	23.6	C7H006Q01	31.3	C7H006Q01	148.2	C7H006Q01	mg l^-1
Chloride	99	5	C7H006Q01	18.7	C7H006Q01	26.5	C7H006Q01	64.5	C7H006Q01	mg l^-1
Sodium	99	11.1	C7H006Q01	25.9	C7H006Q01	32.2	C7H006Q01	62.1	C7H006Q01	mg l^-1
Magnesium	99	4.8	C7H006Q01	13.4	C7H006Q01	21.3	C7H006Q01	26.4	C7H006Q01	mg l^-1
TDS	99	125	C7H006Q01	286	C7H006Q01	366	C7H006Q01	556	C7H006Q01	mg l^-1
Conductivity	99	16.2	C7H006Q01	38.2	C7H006Q01	48.4	C7H006Q01	78.5	C7H006Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	6	7.99	C2R007Q01	8.28	C2R007Q01	8.36	C2R007Q01	8.37	C2R007Q01	-log [H⁺]
Fluoride	6	0.1	C2R007Q01	0.1	C2R007Q01	0.21	C2R007Q01	0.21	C2R007Q01	mg l^-1
NO3(N)	6	0.055	C2R007Q01	0.121	C2R007Q01	0.183	C2R007Q01	0.198	C2R007Q01	mg l^-1
Sulphate	6	3	C2R007Q01	7.1	C2R007Q01	10.7	C2R007Q01	10.8	C2R007Q01	mg l^-1
Chloride	6	5	C2R007Q01	5	C2R007Q01	8.3	C2R007Q01	8.4	C2R007Q01	mg l^-1
Sodium	6	7.7	C2R007Q01	8.9	C2R007Q01	13	C2R007Q01	13.2	C2R007Q01	mg l^-1
Magnesium	6	15.1	C2R007Q01	23.5	C2R007Q01	35.8	C2R007Q01	36	C2R007Q01	mg l^-1
TDS	6	252	C2R007Q01	317	C2R007Q01	354	C2R007Q01	359	C2R007Q01	mg l^-1
Conductivity	6	31.7	C2R007Q01	39	C2R007Q01	43.5	C2R007Q01	44.2	C2R007Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	50	7.63	C7R001Q01	8.27	C7R001Q01	8.5	C7R001Q01	8.6	C7R001Q01	-log [H⁺]
Fluoride	50	0.21	C7R001Q01	0.32	C7R001Q01	0.51	C7R001Q01	0.65	C7R001Q01	mg l^-1
NO3(N)	50	0.02	C7R001Q01	0.055	C7R001Q01	0.296	C7R001Q01	2.256	C7R001Q01	mg l^-1
Sulphate	50	18.6	C7R001Q01	31.3	C7R001Q01	46	C7R001Q01	73.1	C7R001Q01	mg l^-1
Chloride	50	13.8	C7R001Q01	26.3	C7R001Q01	45.4	C7R001Q01	53.8	C7R001Q01	mg l^-1
Sodium	50	15.2	C7R001Q01	30.5	C7R001Q01	56.8	C7R001Q01	66.1	C7R001Q01	mg l^-1
Magnesium	50	7.8	C7R001Q01	16.4	C7R001Q01	23.7	C7R001Q01	26.9	C7R001Q01	mg l^-1
TDS	50	202	C7R001Q01	318	C7R001Q01	485	C7R001Q01	511	C7R001Q01	mg l^-1
Conductivity	50	23.4	C7R001Q01	43.1	C7R001Q01	63	C7R001Q01	68.9	C7R001Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	189	7.1	C9R002Q01	8.09	C9R002Q01	8.31	C9R002Q01	8.63	C9R002Q01	-log [H⁺]
Fluoride	189	0.21	C9R002Q01	0.34	C9R002Q01	0.42	C9R002Q01	0.5	C9R002Q01	mg l^-1
NO3(N)	189	0.02	C9R002Q01	0.055	C9R002Q01	0.15	C9R002Q01	1.155	C9R002Q01	mg l^-1
Sulphate	189	55.4	C9R002Q01	128.1	C9R002Q01	191.5	C9R002Q01	230.3	C9R002Q01	mg l^-1
Chloride	189	22.3	C9R002Q01	51.3	C9R002Q01	74.6	C9R002Q01	100.5	C9R002Q01	mg l^-1
Sodium	189	24	C9R002Q01	50.6	C9R002Q01	72.8	C9R002Q01	98.7	C9R002Q01	mg l^-1
Magnesium	189	12.5	C9R002Q01	22.2	C9R002Q01	31.8	C9R002Q01	39.5	C9R002Q01	mg l^-1
TDS	189	270	C9R002Q01	409	C9R002Q01	589	C9R002Q01	692	C9R002Q01	mg l^-1
Conductivity	189	39.3	C9R002Q01	63.4	C9R002Q01	88	C9R002Q01	101.1	C9R002Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	94	7.26	C6R002Q01	8.15	C6R002Q01	8.39	C6R002Q01	8.6	C6R002Q01	-log [H⁺]
Fluoride	94	0.1	C6R002Q01	0.23	C6R002Q01	0.28	C6R002Q01	0.33	C6R002Q01	mg l^-1
NO3(N)	94	0.02	C6R002Q01	0.044	C6R002Q01	0.131	C6R002Q01	1.203	C6R002Q01	mg l^-1
Sulphate	94	9.9	C6R002Q01	20.7	C6R002Q01	30.5	C6R002Q01	53.7	C6R002Q01	mg l^-1
Chloride	94	5	C6R002Q01	11.6	C6R002Q01	14.4	C6R002Q01	16.1	C6R002Q01	mg l^-1
Sodium	94	9.2	C6R002Q01	21.8	C6R002Q01	27.8	C6R002Q01	36.7	C6R002Q01	mg l^-1
Magnesium	94	4.1	C6R002Q01	11.6	C6R002Q01	18.9	C6R002Q01	20.9	C6R002Q01	mg l^-1
TDS	94	110	C6R002Q01	247	C6R002Q01	360	C6R002Q01	413	C6R002Q01	mg l^-1
Conductivity	94	14.8	C6R002Q01	31.4	C6R002Q01	43.4	C6R002Q01	51.8	C6R002Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	6	7.91	C4R001Q01	8.07	C4R001Q01	8.24	C4R001Q01	8.3	C4R001Q01	-log [H⁺]
Fluoride	6	0.3	C4R001Q01	0.4	C4R001Q01	0.42	C4R001Q01	0.43	C4R001Q01	mg l^-1
NO3(N)	6	0.02	C4R001Q01	0.02	C4R001Q01	0.174	C4R001Q01	0.245	C4R001Q01	mg l^-1
Sulphate	6	15.9	C4R001Q01	16.9	C4R001Q01	21.7	C4R001Q01	22.2	C4R001Q01	mg l^-1
Chloride	6	5	C4R001Q01	5	C4R001Q01	12.4	C4R001Q01	12.4	C4R001Q01	mg l^-1
Sodium	6	19.2	C4R001Q01	24	C4R001Q01	27.7	C4R001Q01	28.1	C4R001Q01	mg l^-1
Magnesium	6	6.9	C4R001Q01	7.9	C4R001Q01	8.7	C4R001Q01	8.9	C4R001Q01	mg l^-1
TDS	6	200	C4R001Q01	225	C4R001Q01	246	C4R001Q01	254	C4R001Q01	mg l^-1
Conductivity	6	25.8	C4R001Q01	29	C4R001Q01	31.4	C4R001Q01	33.6	C4R001Q01	mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	37	7.46	C4R002Q01	8.01	C4R002Q01	8.3	C4R002Q01	9.07	C4R002Q01	-log [H⁺]
Fluoride	37	0.2	C4R002Q01	0.25	C4R002Q01	0.32	C4R002Q01	0.38	C4R002Q01	mg l^-1
NO3(N)	37	0.02	C4R002Q01	0.133	C4R002Q01	0.343	C4R002Q01	0.356	C4R002Q01	mg l^-1
Sulphate	37	6.9	C4R002Q01	17.4	C4R002Q01	31.7	C4R002Q01	34.5	C4R002Q01	mg l^-1
Chloride	37	5	C4R002Q01	5	C4R002Q01	10.5	C4R002Q01	11.7	C4R002Q01	mg l^-1
Sodium	37	8.3	C4R002Q01	11.3	C4R002Q01	17.5	C4R002Q01	19.8	C4R002Q01	mg l^-1
Magnesium	37	4.7	C4R002Q01	5.5	C4R002Q01	7.9	C4R002Q01	11.5	C4R002Q01	mg l^-1
TDS	37	115	C4R002Q01	148	C4R002Q01	194	C4R002Q01	238	C4R002Q01	mg l^-1
Conductivity	37	16.3	C4R002Q01	18.8	C4R002Q01	24.5	C4R002Q01	31.8	C4R002Q01	mS m^-1