OPERATION OF UDUTHOREHALLA IRRIGATION RESERVOIR

Abstract

Formulation of operation plan for a reservoir is nothing but the analysis of combined effect of streamflows water require-ments, storage capacity and the evaporation. Such an analysis demonstrate the feasibility of a water resources project. Some investigators have applied linear, Dynamic programm-ing concepts in developing operation plan. The conventional method of developing a rule curve is very commonly followed to formulate an operation plan. Instead in this study operation plan has been tried to develope from two different approaches. One by imposing some restrictions on abundant use of water by some regression equations and other by developing a rule-curve not by the conventional criteria of mass curve. Lastly the two different approaches have been compared. Uduthorehalla Irrigation Reservoir, in Karnataka is chosen for study. The area for which the project has been framed, is frequently subjected to drought. From the project report 26 years inflow and other data have been collected. In the entire study the emphasis has been given much to minimise water losses through spill during surplus months and deficiencies during low flow months. Also the deficits have been tried to moderate proportionately over the entire period.