Calibration of Channel Roughness for Lower Mahi River, Using HEC-RAS
| Author(s) | : | Gohil Hasti, Dr. Suvarna Shah |
| Institution | : | PG Student, Department Of Civil Engineering, The Maharaja Sayajirao University Of Baroda, Vadodara, Gujarat, India |
| Published In | : | Vol. 6, Issue 13 — January 2019 |
| Page No. | : | - |
| Domain | : | Engineering |
| Type | : | Research Paper |
| ISSN (Online) | : | 2348-4470 |
| ISSN (Print) | : | 2348-6406 |
Channel roughness is the most sensitive parameter in development of hydraulic model for flood forecastingand flood plain mapping. Hence, in present study it is attempted to calibrate the channel roughness coefficient(manning’s ‘n’ value) along the river Mahi, Gujarat through simulation of flood using HEC-RAS. The requirement ofmultiple channel roughness coefficient manning’s ‘n’ values along the river has been spelled out through simulation offloods, using HEC-RAS, for year 2001 and 2003 , supported with the photographs of river reaches collected during thefield visit of the lower Mahi river. The calibrated model, in terms of channel roughness, has been used to simulate theflood for year 2005 and 2011 in the river. The performance of the calibrated HEC-RAS based model has been accessedby capturing the flood peaks of observed and simulated floods; and computation of Root Mean Squared Error (RMSE) forthe intermediated gauging stations on the lower Mahi River
Gohil Hasti, Dr. Suvarna Shah, “Calibration of Channel Roughness for Lower Mahi River, Using HEC-RAS”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 6, Issue 13, pp. -, January 2019.
