HYDROLOGICAL STUDIES OF ADHAIM RIVER BASIN PROJECT (IRAQ)

Abstract

Estimation of storage capacity of reservoir, to utilise water for various purposes namely irrigation, power generation, flood control, navigation etc. 'i:s an important hydrological problem. In this dissertation the irrigation water requirement for the area on both sides of the Adhaim River is estimated, based on the available river flow records, approach has been made to estimate a reservoir capacity to meet this water requirement. The draft pattern has been calculated by using acne L(• 5 (U..s.A) formula developed in foreign countries, and for 80'/. of c ulturable area, there is also recommendation to use a system of irrigation whereby intensive cropping pattern will be adopted. By preliminary plan in involving the mass curve method, it is found out that the available river flow is insufficient to meet the demand and supplementary flow has to be diverted from Lezzer Zab River. The reservoir capacity thus obtained has been checked for adequacy by reservoir operation table covering a critical dry year. Further a mathematical model has been developed from the existing data with the aid of the computer. This model can be used for generation of long period data from insufficient river flow data. By techniques used by Fiering and the studies conducted by Harvard Water Resources Program, the long term data thus obtained can be used for reservoir operation and for finding out frequency distribution and benefit functions.