UTILIZATION OF SRTM DATA FOR FLOOD PROTECTION BASED ON GIUH APPROACH

ungauged Canle catchment is presented. The SRTM data was obtained and processed in order to createa suitable Digital Elevation Model (DEM). A lumped empirical model, the Geomorphologic InstantaneousUnit Hydrograph (GIUH) rainfall – runoff model, is developed for flood prediction. Model parameters aremainly Horton’s morphometric parameters including bifurcation, length and area ratios. A new functionalitywithin the ILWIS GIS-RS package, namely “DEM-hydro processing”, is applied to effectively processthe DEM and extract these ratios. Results showed that with limited data (e.g from SRTM), the model wassuccessfully applied for the Can Le catchment.