Urban runoff management in order to reduce flood risks (case study: phase 2 of the new city of Hashtgerd)
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2013, Vol 3, Issue 10
Abstract
Flooding in urban areas due to the defect or any inefficiency in urban drainage systems causes great damage to public and private buildings and other infrastructures. Therefore, in order to management of runoff, phase 2 of the new city of Hashtgerd was selected. To simulate the rainfall-runoff process, SWMM model was used. Eight factors including percentage of impervious area, slope, width, percentage of impervious area without surface storage, n-Manning's coefficient of impervious areas, n-Manning's coefficient of pervious areas, depth of depression storage on pervious and impervious areas were investigated. Results of model sensitivity analysis showed that n-Manning's coefficient of impervious areas, width, slope and percentage of impervious areas were more effective in changing the peak flow. According to the results, the possibility of flooding is low due to the barren lands and high permeability of the study area and it is more important in areas near the basin outlet. However, with regard to the urban sprawl in recent decades, city residents and officials will suffer from flooding in future. Therefore, this model could be used for predicting the risk of flooding, drainage design and cost estimate, urban management, and identifying priority areas for flooding problem.
Authors and Affiliations
Mamak Ahmadian, Hassan Ahmadi, Baharak Motamed Vaziri, Ehsan Zandi Esfahan
Keywords
Related Articles
- EP ID EP37403
- DOI -
- Views 191
- Downloads 0
Lipid profile and systemic inflammation, their responses to acute cycling in obese men
Obesity is known to be associated with low-grade inflammation and insulin resistance. To evaluate of C-reactive protein fat profile markers in response to acute exercise test, these variables were measured before and af...
Comparison of chemical compounds found in the gum essential oil of male and female Pistacia atlantica subsp. Kurdica
This study is the first report to compare the compositions of gum essential oil in male and female Pistacia atlantica Subsp. Kurdica. The results showed that the minor differences were found between the compositions of...
Land use/cover dynamics in lowland Ethiopia since 1957: the case of Mandura district, Benshangul-Gumuz Regional State
The main objective of this study is to investigate land use/cover changes since 1957 in Mandura district of Benshangul-Gumuz regional state, Ethiopia. Aerial photographs of 1957, 1982 and spot-5 image of the 2006/07 we...
Analysis of the uniqueness of physical form of the teluk kelumpang nature reserve which have high potential of biodiversity based on the satellite imagery
Indonesia has established natural reserve areas, one of which is the Teluk Kelumpang Nature Reserve (TKNR) located in Kotabaru Regency, South Kalimantan with an area of about 28,437,612 ha. TKNR region in which there is...
A fraction of angiosperms of Tehsil Banda Daud Shah district Karak Pakistan
The Flora of Banda Daud Shah is interesting because of the presence of both hills and plains in the area. The hills in most part of the area seem to be barren but many are rich in grasses, Rhazia stricta, Dodonaea visco...