Dam and river flow optimization - this is a continuous process usually done twice a day during high flow conditions. The aim is to optimize the flow in the Vaal and Orange River system.
VAAL RIVER
Vaal Dam - capacity 2603 million cubic meters. The dam has 60 crest gates and a
flood storage capacity of 25% above the 100% full supply level. Highest peak inflow of
4800cumec experienced during February 1996.
Bloemhof Dam - capacity 1264 million cubic meters. The dam has 20 crest gates and a
flood storage capacity of 18% above the 100% full supply level. Highest
peak inflow of 6200 cumec experienced during March 1988.
ORANGE RIVER
Gariep Dam - capacity 5341 million cubic meters. The largest dam on the Orange River
and in the RSA. Highest peak inflow of
11600 cumec experienced during February 1988.
Van der Kloof Dam - capacity of 3171 million cubic meters. Highest peak inflow of 6700 cumec
experienced during February 1988.
Vaal Dam
Bloemhof Dam
Gariep Dam
Gariep
Dam
VD
Kloof Dam