A Water Quality-Quantity Model for Avcilar Campus of Istanbul University Incorporating LID Implementation

Gülbaz S., Yıldırım A., Kazezyılmaz Alhan C. M.

in: New Trends in Urban Drainage Modelling. Green Energy and Technology, Giorgio Mannina, Editor, Springer, Chamasha Books, Switzerland, Zug, pp.688-692, 2018

  • Publication Type: Book Chapter / Chapter Research Book
  • Publication Date: 2018
  • Publisher: Springer, Chamasha Books, Switzerland
  • City: Zug
  • Page Numbers: pp.688-692
  • Editors: Giorgio Mannina, Editor


Rainwater management practices are implementations for improvement

of storm water quality and quantity. Implementation of these practices in

urban areas is vital because urbanization results in low percentage of permeable

soil and cuts off the ground water recharge. Over impermeable surfaces, rain

quickly turns into surface runoff and causes flooding. With urbanization, contaminants,

which accumulate over the surface, increase and therefore, the contamination

of the surface runoff also increases. A number of precautions and

control mechanisms are needed to remove these contaminants from the surface

runoff which are called as Low Impact Development (LID) Best Management

Practices (BMP). LID-BMPs serve for protection of the hydrologic cycle,

ecological balance, reduction of the flood risk and improvement of surface water

quality. In this study, first, a hydrological model for Avcılar Campus of Istanbul

University is developed by using Environmental Protection Agency Storm

Water Management Model (EPA SWMM). Then, the water quality model is

integrated into the hydrological model by defining various land use types such

as low-density residential, high-density residential, highway commercial and

highway, and pollution parameters such as total suspended solid (TSS) and lead

(Pb). Finally, several LID implementations such as green roof, permeable

pavement, bioretention, rain garden, and rain barrel, are defined into the model

according to the settlement type on the campus. The impact of the LID

implementations on the water quality and quantity are observed. Model results

show that the LID implementations greatly reduce the peak discharge. Moreover,

LID implementations also decrease pollutant concentrations in surface