Ecology, Environment and Conservation Paper

Vol.18, Issue 2, 2012; Page No.(223-227)

FLOOD SIMULATION WITH WEAP MODEL (CASE STUDY: GOLESTAN BASIN), IRAN

Alireza Rezaee, Saeid Shabanlou and Hosein Babazadeh

Abstract

Since Gorgan River basin is prone to flooding, identifying areas prone to flooding is essential. The present study is a way of using hydrology model and flood risk prone areas within watershed and determining these verities of floods, i.e. to prioritize the rise in each sub-basin or hydrologic units. First, the watershed in GIS environment (GIS) software using Arc- Hydro basin was divided into the following nine areas, then the physical properties of basins and sub-basins was determined. With data needed for flood hydrographs design for each sub-basin and watershed through the implementation of the entire WEAP model was obtained. With peak discharge under consideration based on watershed and flood index definition for the rise in this research it is proposed, in each model run the efficacy of each sub-basin is removed from the flood routing of basin process and the amount of basin output discharge without participation of the corresponding sub-basin was calculated. In this respect among sub-basins in terms of impact on the flood basin outflow, Gharnaveh sub-basin is more critical.

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