Study Of Drainage Analysis As Flood Control In Setia Budi Area Medan City

The Setia Budi area in Medan city has drainage that is not functioning properly. Where the drainage conditions are no longer able to act as a reservoir for rainfall and runoff in the area. This is caused by the cross section of the channel that has been damaged and irregular, the amount of garbage and the lack of maintenance on the drainage in the area. This condition is the trigger for flooding in the Setia Budi area of Medan City. Given the large number of losses caused by flooding, it is necessary to plan for flood management in the Setia Budi area of Medan, especially Murni street, Perjuangan street and Abadi street. Drainage analysis can be done to determine the capacity and condition of the drainage itself. Primary drainage analyzed along 2.5 Km and 1.2 Km secondary drainage. This analysis aims to determine the ability of the drainage to accommodate and drain and dispose of water from catchment areas along primary and secondary drainage during high rainfall. The analysis was carried out using the Log Person type III distribution method. Based on the results of the hydrological analysis and distribution test, the maximum rainfall intensity (I) is 17.705 mm/hour, the maximum planned flood discharge (Q) is 6.983 m3/s and the Concentration Time (tc) is 0.79 hours. These results are input into the HEC-RAS 4.1.0 application to obtain a flow simulation.