Analysis of the Capacity of the Tanjung Burung Retention Pool, Palembang City

Teguh Prabowo; Firdaus Firdaus

doi:10.24014/jti.v10i1.25714

Analysis of the Capacity of the Tanjung Burung Retention Pool, Palembang City

Teguh Prabowo, Firdaus Firdaus

Abstract

Palembang City is a lowland area with an average height of 4-12 meters. When the rainy season arrives, flooding will occur in several locations, so it is necessary to build retention ponds to overcome this problem. This research aims to analyze whether the capacity of the retention pond is still capable of dealing with rainfall which has increased significantly over the last 10 years. From the research results, the largest rainfall was obtained using the gumbell method, and the results of the gumbell method analysis passed the chi-square and Smirnov-kolmogorof goodness-of-fit tests. The 10 year return period results obtained were 139.89 mm/hour and the peak discharge was 2.83 m3/s. The retention pond catchment area is 13.71 ha, with a rainwater storage volume in accordance with the Regulation of the Minister of Public Works of the Republic of Indonesia No. 11/PRT/M/2014 amounting to 8713.58 m3. The retention pond is considered capable of accommodating this rainfall because the retention pond capacity is 13,400 m3. Simulation results using HEC-RAS software showed that the water level was 3.25 meters.

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DOI: http://dx.doi.org/10.24014/jti.v10i1.25714