Flood Simulation
Having completed the set up of the system with the requisite
model parameters and variables, a calibration run was
performed using the peak discharge value corresponding to the
50 yr return period flood event. The initially used Manning’s ‘n’
values were varied to give the downstream boundary condition.
HEC-RAS model simulation results were exported to HECGeoRAS
for further processing and visualization of flood
extents. Results of this simulation are then checked against
flood extent delineated from the satellite data which was at the
scale of 50 year return period.