Prediction of Continuous Rainfall-Runoff Scenarios for Snow-Fed Watershed of Himachal Pradesh, India using Geographical Information System GIS based on Hydrological Modelling

Rainfall runoff modeling is one of the most complex hydrological due to involvement different watershed physical parameters. It essential for analysis response towards received precipitation under influence variables. As it a replica response, Rainfall-Runoff evaluate general characteristics total surface at catchment’s outlet. The main objective this study was prediction rainfall using Hydrologic Engineering Center-Hydrologic Modeling System [HEC-HMS] model Rampur which covered in Kullu and Shimla districts situated Upper Sutlej sub-basin Himachal Pradesh, India. Geo-spatial data Digital Elevation Model,LandUse-LandCover (LU-LC) map, Soil map Hydro-meteorological were collected from open source web portals utilise as input parameters modeling. Conservation Service-Curve Number (SCS-CN) loss modeling, Service–Dimensionless Unit Hydrograph [SCS-UH] transform Muskingum method Runoff routing used respective components HEC-HMS model. This article proposes methodology generating hourly daily Intensity-Duration-Frequencycurves Meteorological HMS. simulation results with 5 return period scenarios are follows frequency tendency, such 1000 year peak delivers 4729.5 m3/s, 500 4263.9 100 gives 3196.5 50 deliver 2745.3 m3/s 10 953.7 outlet watershed.