Title: Geographical information system module for deriving the flash flood hydrograph in mountainous areas
Abstract: This work presents a methodology of determining the surface runoff hydrograph when the storm characteristics are known. The methodology was automated in a Geographic Information System model that can be used in any study if the user can input the necesarry parameters. The model, built by implementing some well known hydrologic methods in GIS, consists of four components that address the following requirements: the runoff depth in mm, the runoff coefficient, the travel/concentration time and the discharge. The discharge calculation is carried out by applying the rational method in each pixel of the watershed to determine the specific discharge for that pixel. The model was built using a GIS modular approach, and each module can be used independently if the result of the module is needed for another scope. If data from the meteorological predictions is used as an input, the model can be used as a tool included in a warning system as a method to anticipate flash flood.
Publication Year: 2010
Publication Date: 2010-04-20
Language: en
Type: article
Access and Citation
Cited By Count: 4
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