oa Civil Engineering = Siviele Ingenieurswese - The Orange River Project : the world's longest tunnel : part 2 : feature article
Extracted from text ... SIVIELE INGENIEURSWESE ? JULIE 2005 4 THE ORANGE RIVER PROJECT TAKES SHAPE By 1960 it was possible to formulate a comprehensive development plan for the Orange River, which would provide for the ultimate requirements of irrigation, urban water supply, industrial water supply, hydro- electric power development and fl ood control. This new concept widened the emphasis from the single purpose Orange- Fish-Sundays diversion project to the multipurpose Orange River development project. The major effect of this change of emphasis on the Orange-Fish tunnel was the choice of the dam site at Ruigtevallei near Norvalspont, instead of the previously proposed sites further upstream. It would now be possible to build a tower in the dam basin and so tap the ..
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