TR-81 : Field investigations in Kolar subbasin of river Narmada

Abstract

Under the present project, six sub-basins of river NarMada were chosen for simulation of hydrologic response using the SHE model. The Kolar river basin upto Satrana gauge-discharge site is one of these six sub-basins. DUring the simulation of these basins, it was realized that the quantum of information on soil properties available was extremely inadequate particularly for a model like SHE. It is well known that correct and detailed information about soil properties is very crucial input for a physically based distributed rainfall-runoff model. At the third meeting of the Project Steering Committee held on June 9, 1989 at National Institute of Hydrology, Roorkee, it was recommended that a programme of simple field measurement be carried out in Kolar Basin with the aim of reducing uncertainty in the soil parameter values for the

SHE simulations, and providing experience to NIH Staff in making field measurement for SHE applications. Detailed specifications for this purpose were drawn up (13. Originally it was planned to carry out the investigation during November 1999. During last week of November 1989, a visit was made to Bhopal and Kolar basin to have first hand idea about the time requirement for field investigations. Some preliminary field tests were conducted during this visit with the partitipation of engineers of M. P. Irrigation Department (MPID), Kolar Project Circle.