• SHAIKH MOHAMEDMAROOF PEERMOHAMED
• Vipinkumar G. Yadav
• Sanjay M. Yadav

Hydrological modeling is a tool to estimate the basin’s hydrological response. In this study, HEC-HMS model is used to simulate the rainfall-runoff process in Rel watershed of Gujarat, India. Rel basin is a sub-basin of Lower Luni basin. SCS curve number and SCS unit hydrograph methods were used to compute runoff and peak runoff rate. Rainfall-runoff simulation is conducted using data of one recent rainstorm event (July 2017). Initial results showed that there is a large difference between observed and simulated peak flows. Therefore, model calibration with optimization method and sensitivity analysis has been done. The results showed that lag time is a sensitive parameter. Model validation using optimized lag time parameter showed the reasonable difference in peak flow. It can be concluded that model developed can be used with a reasonable approximation for hydrologic simulation in Rel watershed to predict runoff from a rainfall event.

Hydrologic modeling, Rainfall-Runoff simulation, HEC-HMS, SCS-CN method, Rel Basin.

"SIMULATION OF RAINFALL-RUNOFF EVENT USING HEC-HMS MODEL FOR REL SUB-BASIN, GUJARAT, INDIA", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 4, page no.402-407, April-2018, Available :http://www.jetir.org/papers/JETIR1804298.pdf

"SIMULATION OF RAINFALL-RUNOFF EVENT USING HEC-HMS MODEL FOR REL SUB-BASIN, GUJARAT, INDIA", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 4, page no. pp402-407, April-2018, Available at : http://www.jetir.org/papers/JETIR1804298.pdf