Application of HEC-GeoHMS as a Tool of Hydrologic Modeling in the Field of Water Resources Engineering

This paper gives an approach of using Hec- GeoHMS tool for the generation of a hydrologic model. By the application of terrain processing tool of HEC-GeoHMS, user can delineate the stream network and watershed. The modelling of the watershed can be achieved by applying the series of tools available in Hec-GeoHMS. Catchment area of Bhadar-I dam which is situated in Rajkot district is selected as study area. By Use of this tool it is found out that area of Bhadar-I catchment is 2430sq.km which matches the actual data acquired from the government offices. It has been observed that the recent development of the GIS technology has found a great application in the field of water resource engineering. It has been found that the use of HEC- GeoHMS tool yields effective and accurate modelling of any watershed provided that spatial data available for the input are accurate. Hence its use must be encouraged compared to traditional techniques of watershed modelling.