Appraisal of the Hydrological Potential of Ungauged Basin Using Morphometric Parameters

Abstract

Discharge data for most basins in developing countries are lacking or inadequate where available. An alternative is to find other ways of appraising the natural water potential of basins without stream discharge records. This study attempts an appraisal of the water resource potential of the Eze-Aku basin in Ebonyi State of Nigeria using morphometric indices alone. From its morphometry the basin is essentially a low land and erosional surface. This affects both the quantity and quality of water for use by inhabitants of the basin. The analysis of results show the Eze-Aku basin is not suitable for water resources development projects demanding large monthly and annual discharge volume such as hydropower and navigation. Other morphometric parameters investigated in the study include bifurcation, shape, stream and drainage densities. Analyses of these parameters provide the basis for demonstrating the effects of environmental controls on both the basin stream network system and for predicting the basin’s output variables. Such information are essential and provide framework for improving agricultural activities, flood control and  management measures and potable water supply in the study area for increased standard of living in the agricultural dominated area.

Key words: Discharge, Morphometry, Water Resources Management and  Planning.