Rainfall Runoff Analysis by Giuh Method on Om Chu River Basin

Abstract

It is critical to quantify runoff that would be generated due to rainfall in a catchment which would in turn help in  predicting the nature of response from a catchment that can be used to come up with a strategic planning and  implementation to prevent from certain foreseen or unforeseen calamities. Most of the sub-catchments in Bhutan are  un-gauged, which results in the insufficient hydrological data for validating the accuracy of any hydrological model.  The current study is approached with identification of reliable hydrological model with the help of real data obtained through customized gauging stations developed using Arduino chip that works on batteries, using sonar sensors. To  overcome the issue of insufficient data sets, Om chu river, situated at Phuentsholing is chosen to be gauged for the  study. This practical approach towards the analysis of intensity and response of catchment, would help engineers to foresee the possible calamities if any and design the structures accordingly with the reasonable costing.