Flood Zoning Using GIS and Mathematical Models Emphasizing Flood Management: A Case Study of Gavi River, Ilam Province, Western Iran

Flood zoning maps are extensively used in flood management studies. Today, these maps are considered one of the basic and most important sources of information in the studies of civil projects in the world and in the agenda of related organizations before taking any action and making any investment. The main purpose of this study is to investigate the applications of floodmaking situations of border Rivers using GIS, generally mathematical models, environmental issues and land use. The field data was analyzed using ArcView which is a powerful software in modeling the water projects. After the initial analysis, these data and the hydraulic data of the river such as river discharge were analyzed using Hec-Ras software. Then, the data and the results obtained from the software were introduced to ArcView. Next, the final implementation of the project and determination of the flood-making zones of the river were investigated. Finally, the effects in terms of environmental and land use issues were taken into consideration.