| Rietvlei Dam | |
| Name Official: | Rietvlei Dam |
| Dam Crosses: | Rietvlei River[1] |
| Res Name: | Rietvlei Dam Reservoir |
| Country: | South Africa |
| Location: | Pretoria, Gauteng |
| Owner: | City of Tshwane |
| Dam Length: | 350 m |
| Dam Height: | 32 m[2] |
| Dam Type: | earth-fill |
| Res Capacity Total: | 12 377 m3 |
| Res Catchment: | 0.4 km2 |
| Res Surface: | 1.89km2 |
| Construction Began: | 1932 |
| Opening: | 1934[3] |
| Coordinates: | -25.8767°N 28.2658°W |
| Location Map: | South Africa |
The Rietvlei dam is an earth-fill type dam and is one of a number of dams supplying water to the Pretoria region of South Africa. It supplies around 41 million liters of drinking water daily,[2] about 5.9% of the water requirement of Pretoria.[4] The dam mainly serves for municipal and industrial use. Its hazard potential has been ranked high (3).
Constructed as an earth-fill dam wall with a brick core in 1932/4, it was extended between 1988 and 1990 by raising the dam wall with the addition of a concrete wave wall and a reinforced earth barrier wall, as well as a surfaced roadway, on top of the original wall.
The dam is fed by the Rietvlei, a river of the Crocodile River (Limpopo) basin, as well as by five fountains and five boreholes.
The Rietvlei Nature Reserve occupies the area immediately surrounding the dam.