HYDROLOGICAL PLANNING AND DESIGN OF SMALL STORAGE IRRIGATION SCHEMES IN SEMI-ARID AREAS

Abstract

In: the arid and semi-arid zones, ' development of irrigated agriculture is often a- difficult tail.. not - only because of constraint on natural resources. (.water and land) but also due to paucity of data. This study deals with decision making with inadequate hydrometeorological data Esc eras _ and unconventional methods are utilised to extract reliabl/e design parameters from limited data. Th concept of ;inadequate - hydrometeorological data is qualitative. In precise terms, .motet mater ; resource' "° -specialist would agree that BO-100 years of ' data . on ' a hydraulic random variable would give- sufficient information, inform tion, " while : 1-i5 years would be considered insufficient for reliable decision "making in water resource planningq likewise,.''- monthly distribution ; of precipitation in an area would "-give - better -.. estimate of .stream flows than the - annual precipitation values The paucity of hydrometeorological data in arid` ,'zone, is an inherent characteristic and is partly attributed to lack of financial resource and technical personnel-`