Below find the positive effect that the recent rainfall of 7 and 8 September 2018 had on the Garden Route District area, including some of the dams.
| Rainfall average over the area between 7 & 8 September 2018
|
Level of dam | ||||
| Dam name | 2018 % Full before rain |
2018 % Full after rain |
2017 % Full last year |
||
| Heidelberg | 38 mm | Duiwenhoks | 63 | ▲67,2 | 67,9 |
| Witsand | 50 mm | No dams here | |||
| Still Bay | 48 mm | No dams here | |||
| Riversdale | 50 mm | Korente Poort | 35 | ▲37 | 46 |
| Mossel Bay | 50-60 mm | Wolwedans | 76 | ▲ 79 | 72 |
| George | 55-73 mm | Garden Route | 68 | ▲71,2 | 42 |
| Avontuur | 66 mm | Haarlem | 42 | ▲ 77 | 14 |
| Uniondale | 84 mm | No dams here | |||
| Knysna | 100-130 mm | Akkerkloof | |||
| Bitou | 130-150 mm | Roodefontein | 70 | ▲102 | 63 |
| Storms river | 212 mm | No dams here | |||
| Tsitsikamma | 260 mm | No dams here | |||
| Oudtshoorn | 20-22 mm | Koos Raubenheimer | 31 | ▲ 35,5 | 44 |
| Calitzdorp | – | Calitzdorp | 9,4 | ▲ 10,3 | 24 |
| Ladismith | 20 – 30 mm | Jan F La Grange | 10 | ▲ 80 | 15 |
