It must be carefully managed by balancing the supply-and-demand of this water resource usage for its derivatives of electricity generation, irrigation, and municipal drinking water. There is trade off in the water usage for electricity and inter-basin transfer for water in other areas like
Port Elizabeth.
Orange–Fish Water Scheme The scheme diverts water from the
Orange River to the
Great Fish River valley. •
Great Fish River Valley, then via Grassridge Dam, ElandsDrift Wier, Cookhouse Tunnel, De MistKraal Weir into •
Sundays River Valley (
Canals and Tunnels Scheme) North-West of
Port Elizabeth, then via Darlington Dam, Korhaansdrift Weir, Canal, Scheepersvlakte Balancing Dam, Bulk water Pipeline to •
Port Elizabeth, Nooitgedracht Water Treatment Works, since 1992 with water from the Sundays River Valley (See External links for more video documentaries on construction and drone footage for canal system.)
Orange-Fish River Tunnel At
Oviston, on the south bank of the reservoir, is the inlet of the
Orange-Fish River Tunnel, allowing water to be diverted to the
Great Fish River and most of the
Eastern Cape's western parts.
Gariep hydroelectric power plant A 360-MW hydroelectric power plant is one is run by Eskom. Four 90-MW hydro turbines (which are remotely controlled from
Gauteng) ==Gallery==