TR-130 : Estimation of hydrological soil parameters for Malaprabha and Ghataprabha subbasins

Abstract

Hydraulic conductivity and soil moisture are the two

important components of hydrological cycle. These parameters are

quite essential in the field of agriculture and hvdrology for

irrigation and, drainage planning, ground • water

rainfall runoff modelling and for water management studies. Soil moisture movement studies are very important for understanding the mechanism of recharge through the soil and to provide soil moisture storage data for the water balance study. In the present study, various soil parameters considered are (:i ) measurement of field saturated hydraulic conductivity (ii) grain size distribution and (iii) soil moisture retention curves. The field tests were carried out at various locations depending upon the soil types in Malaprabha & Chataprabna sub basins. Textural analysis and soil moisture content were determined in

the laboratory of National Institute of HYdrology. Roorkee. The

in-situ field saturated hydraulic conductivity was determined by

Guelph permeameter at various locations in Malaprabha and

I1 LC ) subbasins. This report is prepared by Dr. B Son , Sc.'E", NIH, Roorkee, Dr. B K Purendra, Sh. N Varadarajan, RC, NIH, Delgaum and Sh. S Srivastava of National Institute of Hydrology, Roorkee.