Case study evaluation of geomorphologic rainfall - runoff model, incorporating linear infiltration expression

✍ Scribed by Mohamed Nasr Allam

• Book ID: 102861851
• Publisher: John Wiley and Sons
• Year: 1990
• Tongue: English
• Weight: 775 KB
• Volume: 4
• Category: Article
• ISSN: 0885-6087
• DOI: 10.1002/hyp.3360040107

✦ Synopsis

This paper presents case study applications for the hydraulically-based geomorphologic Instantaneous Unit Hydrograph (IUH), developed by Diaz-Granados et al. (1986). This IUH was derived as a function of watershed geomorphology and stream response to lateral inflows. This response was determined by solving one-dimensional linearized equations of motion including a simple infiltration expression approximated by an infiltration coefficient multiplied by the streamflow discharge. Three gauged watersheds in Saudi Arabia are selected as case studies. A procedure for estimating the stream response parameters (the flow depth, the flow velocity, and the infiltration coefficient) is provided. A comparison is made between the observed and computed hydrographs and an evaluation of the IUH results and limitations is provided.