| dc.description.abstract |
Water pooling during rainfall on Gaharu Street, Binjai City, frequently floods the roadway and enters
residents' homes, causing inconvenience for drivers, disrupting traffic, damaging the road surface, and
resulting in material losses. This road is also the main access route to the School of Teacher Training
and Education (STKIP) Budidaya Binjai, which often experiences flooding at several points along its
stretch. This study was conducted to analyze the drainage system of the road, aiming to identify the
planned flood discharge and the concentration time in the catchment area, as well as to provide solutions
to the flooding problem. The EPA SWMM (Environmental Protection Agency Storm Water Management
Model) was used to model stormwater runoff in urban areas based on actual condition parameters. The
methods applied include Normal distribution, Log Normal distribution, Gumbel distribution, and Log
Pearson Type III distribution, along with the Chi-Square goodness-of-fit test. The results show that the
peak flood discharge reaches 3.53 m³/s for a 5-year return period and 4.14 m³/s for a 10-year return
period, with a catchment area concentration time of 6.9 minutes or 0.083 hours. The analysis of the
existing drainage channel capacity compared to the planned flood discharge indicates that several
segments cannot accommodate the planned discharge. Therefore, redesigning and regular
maintenance of the drainage system are necessary to optimize its functionality.
Keywords: Drainage, Puddles, EPA SWMM 5.1 | en_US |
