Flood Routing Assessment on Narmada Basin using Muskingum Method

Abstract

Flood Routing is a process of measuring a flood hydrograph at any point in a channel by interpreting it to a known hydrograph at a predetermined point in the same channel. Flood forecasting, hydraulic structure design, and sediment transport estimation all facilitate it. The Muskingum flood routing studies on Narmada reach are performed in this paper. By linear muskingum method through trial and error technique the values of K and x are derived which is 10.53hrs and 0.265 respectively. After the determination of K and x values through muskingum formulation the value of C0, C1 and C2 is derived i.e. -0.277983243, 0.399347876 and 0.878635367 respectively. The above values lead to the calculation of routed outflow of year 2020, 2012, and 2013. Separate flood occurrences of the year 2020, 2012 and 2013 are routed through the Narmada from Hoshangabad to Handia. In the year 2012, 2013 the contributions of intermediary zones to the flow are taken into account by assuming tributaries between the measurement sites. According to flood route computations, the computed and observed hydrographs at Handia correspond nicely. The rainfall is simulated for the Narmada River Basin's Hoshangabad-Handia Watershed. According to the findings, the value of R2 can be considered reasonably adequate for calculating a watershed rainfall. The R2 value was 0.8675, indicating that the observed and simulated values were strongly correlated.