Determination of the Fraction of Permeable Area in Control of Runoff Generation in Urban Basins
Permeable fraction, SWMM, Continuous simulation
Urban sprawl without proper landuse use has caused harm to population due to increased stormwater runoff. This study aims to obtain the minimum permeable area fraction of an endorheic basin in urban expansion through application of the SWMM model. The basin will be divided into sub-basins characterized for different land use and land cover from the CN method. Using continuous simulation for different % of impervious area with six different proposed scenarios in TR of 5, 10 and 25 years. As a result, runoff coefficients, peak flows, volumes and peak time are verified in a decentralized manner. On the other hand, the study seeks to examine whether the fraction of permeable area should be the same for areas with different characteristics and what are the influences of the simulation on the results. In this way, the data will contribute to micro and macro drainage analyses of the risk of peak runoff flows.