Impacts of Low Impact Developments on Surface Flow in Alibeyköy Watershed


GÜLBAZ S., KAZEZYILMAZ ALHAN C. M., Nasirzadeh-Dizaji R., Dikici M.

4th IWA International Symposium on Water and Wastewater Technologies in Ancient Civilizations, Coimbra, Portugal, 17 - 19 September 2016, pp.1-4

  • Publication Type: Conference Paper / Full Text
  • City: Coimbra
  • Country: Portugal
  • Page Numbers: pp.1-4
  • Istanbul University Affiliated: Yes

Abstract

Increase in population and also urbanization affects the drinking watershed management and water resources. As a result of urbanization, impervious areas in the watershed increases and infiltrated water decreases. As a result, runoff and peak flow rates increase which causes flooding. Therefore, the impact of urbanization on water resources should be investigated to avoid present and future problems such as floods, droughts, and pollution. In this study, a hydrodynamic model for Alibeyköy Watershed located in Istanbul, Turkey is developed by using Environmental Protection Agency Storm Water Management Model (EPA SWMM). The model is calibrated by using the rainfall and flow data obtained from the stations in the area. Then, Low Impact Development (LID) type of storm water Best Management Practices (BMPs) is implemented into the model in areas nearby the main streams to reduce adverse impacts of urbanization in Alibeyköy Watershed. Finally, several LID types’ scenarios such as bioretentions, vegetative swales, permeable pavements and infiltration trenches are simulated to observe the influence of LID Implementation on peak flow rate.