Rietvlei dam was built during the great depression (from about 1929 to early 1930’s) and was completed in 1934. Manual laborers were paid 4 shilling a month and soil was carted away by mule carts. Feeding the dam is the Sesmyl (Six Mile) Spruit, five fountains (one is located on an adjacent property) and five boreholes. Upstream from Rietvlei dam is the Marais Dam which acts as a sludge dam for Rietvlei Dam. Starting in 1988 a two year project raised the dam and made other improvements. Originally the dam was not open to the public but the city council of Pretoria did plan the reserve ecologically and introduced a number of game species to the reserve. The Nauture Reserve was proclaimed in 1948. Rietvlei dam provides Pretoria with 15% of it’s water. The reserve covers an area of 3800 hectares and can support up to 2000 head of game.