From the National Eutrophication Monitoring Programme site
Explanation of classification terms and colour coding.
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
|
Dam name
click for more info (not available for all) |
Mean TP mg/L | n TP | Mean Annual Chlorophyll a (µg/l) | n Chl | Per cent of time Chl a > 30 µg/l | Trophic status | Comment |
|---|---|---|---|---|---|---|---|
| Albasini | 0.014 | 2 | 1.6 | 2 | 0 | Oligotrophic | Negligible potential and current algal productivity |
| Albert Falls | 0.03 | 26 | 9.9 | 26 | 8 | Oligotrophic | Moderate potential and current algal productivity |
| Allemanskraal | 0.083 | 3 | 1.5 | 4 | 0 | Oligotrophic | Significant potential and negligible current algal productivity |
| Bloemhof | 0.114 | 42 | 63.6 | 19 | 30 | Hypertrophic | Significant potential and current algal productivity |
| Boegoeberg | 0.216 | 17 | 6.1 | 17 | 0 | Oligotrophic | Serious potential and negligible current algal productivity |
| Bon Accord | 0.63 | 20 | 326.7 | 21 | 93 | Hypertrophic | Serious potential and current algal productivity |
| Boskop | 0.048 | 42 | 1 | 14 | 0 | Oligotrophic | Significant potential and negligible current algal productivity |
| Bospoort | 0.791 | 9 | 4123 | 10 | 75 | Hypertrophic | Serious potential and current algal productivity |
| Bronkhorstspruit | 0.074 | 44 | 35.9 | 22 | 47 | Hypertrophic | Significant potential and current algal productivity |
| Buffelspoort | 0.028 | 5 | 5 | 3 | 0 | Oligotrophic | Moderate potential and negligible current algal productivity |
| Cooks Lake | 0.345 | 4 | 20.8 | 3 | 42 | Eutrophic | Serious potential and significant current algal productivity |
| Disaneng | 0.044 | 46 | 3.9 | 5 | 0 | Oligotrophic | Moderate potential and negligible current algal productivity |
| Douglas | 0.051 | 39 | 8.5 | 7 | 19 | Oligotrophic | Significant potential and current algal productivity |
| Driekloof | 0.043 | 7 | - | - | - | - | Moderate potential for algal productivity |
| Driekoppies | - | - | 2.7 | 9 | 0 | Oligotrophic | Negligible current algal productivity |
| EJ Smith | 0.041 | 10 | 17.7 | 12 | 17 | Mesotrophic | Moderate potential and significant current algal productivity |
| Erfenis | 0.289 | 1 | 2.3 | 1 | 0 | Oligotrophic | Serious potential and negligible current algal productivity |
| Gariep | 0.049 | 17 | 1.6 | 15 | 0 | Oligotrophic | Significant potential and negligible current algal productivity |
| Grootdraai | 0.063 | 12 | 8.4 | 6 | 15 | Oligotrophic | Significant potential and current algal productivity |
| Gubu | 0.02 | 7 | - | - | - | - | Moderate potential for algal productivity |
| Hartbeespoort | 0.254 | 109 | 167.1 | 106 | 47 | Hypertrophic | Serious potential and significant current algal productivity |
| Hazelmere | 0.033 | 17 | 3.1 | 26 | 0 | Oligotrophic | Moderate potential and negligible current algal productivity |
| Henkries | 0.038 | 6 | 11.9 | 17 | 14 | Mesotrophic | Moderate potential and significant current algal productivity |
| Henley | 0.004 | 26 | 4.4 | 26 | 0 | Oligotrophic | Negligible potential and current algal productivity |
| Inanda | 0.024 | 28 | 3.7 | 28 | 0 | Oligotrophic | Moderate potential and negligible current algal productivity |
| Kalkfontein | 0.059 | 26 | - | - | - | - | Significant potential for algal productivity |
| Klipfontein | 0.117 | 25 | 20 | 3 | 37 | Eutrophic | Significant potential and current algal productivity |
| Klipvoor | 0.777 | 22 | 104 | 21 | 78 | Hypertrophic | Serious potential and current algal productivity |
| Knellpoort | 0.032 | 8 | 3 | 10 | 0 | Oligotrophic | Moderate potential and negligible current algal productivity |
| Koppies | 0.1 | 16 | 8.1 | 11 | 7 | Oligotrophic | Significant potential and moderate current algal productivity |
| Koster | 0.059 | 23 | 11 | 14 | 15 | Mesotrophic | Significant potential and current algal productivity |
| Krugersdrift | 0.135 | 8 | - | - | - | - | Serious potential for algal productivity |
| Laing | 0.485 | 16 | 4.2 | 8 | 0 | Oligotrophic | Serious potential and negligible current algal productivity |
| Lindleyspoort | 0.041 | 26 | 5.3 | 14 | 0 | Oligotrophic | Moderate potential and negligible current algal productivity |
| Loskop | 0.027 | 6 | 2.4 | 4 | 0 | Oligotrophic | Moderate potential and negligible current algal productivity |
| Lotlamoreng | 0.207 | 4 | 8.2 | 4 | 0 | Oligotrophic | Serious potential and negligible current algal productivity |
| Luphephe | 0.028 | 2 | - | - | - | - | Moderate potential for algal productivity |
| Magoebaskloof | 0.043 | 2 | 1.4 | 3 | 0 | Oligotrophic | Moderate potential and negligible current algal productivity |
| Maguga | 0.022 | 8 | 1.8 | 5 | 0 | Oligotrophic | Moderate potential and negligible current algal productivity |
| Middelburg | 0.031 | 22 | 1.3 | 21 | 0 | Oligotrophic | Moderate potential and negligible current algal productivity |
| Middle Letaba | 0.021 | 5 | 1.5 | 3 | 0 | Oligotrophic | Moderate potential and negligible current algal productivity |
| Midmar | 0.066 | 26 | 3 | 26 | 0 | Oligotrophic | Significant potential and negligible current algal productivity |
| Misverstand | 0.098 | 15 | 21.1 | 11 | 20 | Eutrophic | Significant potential and current algal productivity |
| Modimola | 0.142 | 43 | 13.21 | 7 | 2 | Mesotrophic | Serious potential and moderate current algal productivity |
| Mutshedzi | 0.023 | 2 | 3.3 | 4 | 0 | Oligotrophic | Moderate potential and negligible current algal productivity |
| Nagle | 0.027 | 24 | 9.5 | 24 | 0 | Oligotrophic | Moderate potential and negligible current algal productivity |
| Nahoon | 0.099 | 4 | 1.4 | 3 | 0 | Oligotrophic | Significant potential and negligible current algal productivity |
| Neusberg Noord | 0.057 | 15 | 20.92 | 15 | 15 | Eutrophic | Significant potential and current algal productivity |
| Nooitgedacht | 0.035 | 1 | - | - | - | - | Moderate potential for algal productivity |
| Nsami | 0.035 | 5 | 19.1 | 4 | 33 | Mesotrophic | Moderate potential and significant current algal productivity |
| Nungwane | 0.018 | 17 | 5.3 | 27 | 0 | Oligotrophic | Moderate potential and negligible current algal productivity |
| Nwanedi | 0.03 | 3 | 8.75 | 1 | 0 | Oligotrophic | Moderate potential and negligible current algal productivity |
| Nzhelele | 0.015 | 1 | - | - | - | - | Negligible potential for algal productivity |
| Olifantsnek | 0.057 | 1 | - | - | - | - | Significant potential for algal productivity |
| Orange River At Upington | 0.06 | 16 | 17.35 | 5 | 0 | Mesotrophic | Significant potential and negligible current algal productivity |
| Rietvlei | 0.38 | 20 | 63.7 | 21 | 33 | Hypertrophic | Serious potential and significant current algal productivity |
| Roodekopjes | 0.059 | 13 | 16.8 | 8 | 30 | Mesotrophic | Significant potential and current algal productivity |
| Roodeplaat | 0.194 | 100 | 46.6 | 100 | 41 | Hypertrophic | Serious potential and significant current algal productivity |
| Roodepoort | 0.165 | 5 | 13.8 | 5 | 33 | Mesotrophic | Serious potential and significant current algal productivity |
| Shongweni | 0.059 | 22 | 24.7 | 22 | 36 | Eutrophic | Significant potential and current algal productivity |
| Spitskop | 0.092 | 20 | 24.9 | 3 | 40 | Eutrophic | Significant potential and current algal productivity |
| Sterkfontein | 0.026 | 35 | 2.1 | 17 | 0 | Oligotrophic | Moderate potential and negligible current algal productivity |
| Taung | 0.033 | 37 | 3.6 | 16 | 0 | Oligotrophic | Moderate potential and negligible current algal productivity |
| Tzaneen | - | - | 1.5 | 6 | 0 | Oligotrophic | Negligible current algal productivity |
| Umtata | 0.078 | 6 | 1.4 | 13 | 0 | Oligotrophic | Significant potential and negligible current algal productivity |
| Mzinto | 0.035 | 9 | 10.4 | 11 | 0 | Mesotrophic | Moderate potential and negligible current algal productivity |
| Vaal Barrage | 0.069 | 10 | 8.4 | 6 | 10 | Oligotrophic | Significant potential and current algal productivity |
| Vaal | 0.077 | 46 | 14.78 | 16 | 17 | Mesotrophic | Significant potential and current algal productivity |
| Vaalkop | 0.114 | 1 | - | - | - | - | Significant potential for algal productivity |
| Vanderkloof | 0.039 | 13 | - | - | - | - | Moderate potential for algal productivity |
| Voelvlei | 0.046 | 16 | 6.3 | 19 | 7 | Oligotrophic | Moderate potential and current algal productivity |
| Vondo | 0.022 | 10 | 2.5 | 6 | 0 | Oligotrophic | Moderate potential and negligible current algal productivity |
| Vygeboom | 0.012 | 1 | - | - | - | - | Negligible potential for algal productivity |
| Welbedacht | 0.076 | 10 | 11.7 | 8 | 12 | Mesotrophic | Significant potential and current algal productivity |
| Witbank | 0.04 | 21 | 16 | 22 | 25 | Mesotrophic | Moderate potential and significant current algal productivity |
| Wriggleswade | 0.039 | 7 | - | - | - | - | Moderate potential for algal productivity |