TR-163 : Infiltration studies in Jammu region

Abstract

The phenomenon of infiltration, that is the process of water entry into the soil deserves a special place in hydrologic studies. In the present study an attempt has been made to develop infiltration curves for Jammu region in the state of J & K Double ring cylinder infiltrometer tests were conducted at 19 places within region under different landuses and soils on different dates The soil informations were obtained from Directorate of Agriculture , Jammu . Moreover, the soil textures were also determined in the field using wet method or method of rolling as an ancillary informations.

The regression analysis was performed between field observations for Kostiakov (1932) type infiltration function (Y = a t ) using multiple linear regression programme MULTI. FOR after transforming the function into the linear form through logarithmic transformation. The results showed that the infiltration rates were higher for forest lands than grass, agriculture and bare lands. The correlation coefficients for the regression equation varied from 0.98 to 0.'99 , 0.97 to 0.99, 0.95 to 0.99 and 0.96 to 0.99 for soils under bare, agriculture, grass and forest lands respectively.