20-Hydrological analysis for a prepared agricultural watershed.

Abstract

From the observed rainfall and resultant runoff stored behind a storage structure in the G.R.Halli red soil watershed, different hydrological elements have been computed. Water balance of the watershed has been used as on tool to analyse the performance of the system and to locate the problems in the water harvesting process. The water lost due to seepage, deep percolation etc., have been quantified. Threshold values of rainfall for causing runoff in the watershed have also been worked out. The watershed having been treated with sound and scientific conservation measures, has produced only 1.45 and 0.69 t/ha of soil and 1.4% and 1.3% of runoff during 1985 and 1986 respectively.