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Water Balance of the Niger Basin

by D. R. Maidment,
F. Olivera,
Z. Ye,
S. M. Reed,
D. C. McKinney,



Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water

Abstract:

A map-based method is used to construct a monthly water balance model of the 2.3 million km Niger River basin in West Africa. The watersheds and stream network within the basin are derived from a 1 km digital elevation model of Africa using an algorithm that produces a single stream for each watershed. Rainfall-runoff computations are done for each watershed and the runoff routed down through the river network using programs attached to the Arcview GIS. Results are presented for the monthly water balance of the Niger River at Koulikoro and Dire, gages which are upstream and downstream, respectively of the Inner Delta of the Niger River.

Subject Headings: Rivers and streams | Watersheds | Water balance | Developing countries | Basins | Rainfall-runoff relationships | Terrain models | Africa | Niger | Niger River

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