Erfenis Dam

28°30′39″S 26°46′38″E / 28.51083°S 26.77722°E / -28.51083; 26.77722PurposeIrrigationOpening date1960Owner(s)Department of Water AffairsDam and spillwaysType of damEarth fill damImpoundsGroot-Vet, Klein-Vet, SoutspruitHeight34 mLength489 mReservoirCreatesErfenis Dam ReservoirTotal capacity212 340 000 m³Catchment area4,724 km² (1,824 sq mi)Surface area32.91 km² (12.71 sq mi)

The Erfenis Dam is an earth-fill type dam located in the Free State province of South Africa, on the Vet River, near Theunissen. It was established in 1960 and its primary purpose is for irrigation use. The hazard potential of the dam has been ranked high (3).

• List of reservoirs and dams in South Africa
• List of rivers of South Africa

• List of South African Dams from the Department of Water Affairs