Management and Disposal of Urban Runoff Using Geographic Information System and River Tools Techniques (Case Study: District 1 of Ahwaz City)

جغرافیاوتوسعه ناحیه ای

Article 1, Volume 12, Issue 1 - Serial Number 22, September 2014   

Document Type: scientific-research article

DOI: 10.22067/geography.v12i22.36127

Authors

ezatallah mafi¹; gholamreza moradi^* ; Salman Hayati²; Rohollah Khayampour¹

¹Ferdowsi University of Mashhad

²Young Researchers and Elite Club, Lamerd Branch, Islamic Azad University, Lamerd,Iran

Abstract

Objectives: Ahawzas one of the metropolises of Iran in classified among lowland plains with low slope in terms of topography.In this city, unsystematic construction and immediate rainfalls and showers are the mainsources of flooded street.
Method: The present study has a descriptive-analytical approach and is based on causality method. using geographic information system software (GIS) and River tools techniques, this study seeks to identify and manage of surface waters and urban floods in District 1 of Ahwaz during rainfalls and then the maps of slope, their direction and areas with flooding potentials are prepared.
Findings/ Results: given the low slope of the area, the gravity drainage and pumping of water to Karoon River is impossible due tohighcosts .However, using GIS analysis ,the natural routes are determined for water drainage andfinally, the map of proposed surface water disposal system in the study area is presented.
Conclusion and Suggestion: In District 1 of Ahwaz, thetree orhierarchical surface water collection network has been predicted based onurbanstreets and alleys. The collected wateris directed to the channels and then transferred toKaroon River.

Keywords

Runoff Disposal Network; Geographic Information System; River tools techniques; Ahwaz city