ANALISA UMUR LAYANAN EMBUNG BEROANGIN KABUPATEN JENEPONTO

Abstract

One of the performance degradation in retention basin is caused by sedimentation, as is the case with theBeroangin retention basin in Jeneponto District which was built in 2015, which if no maintenance is carried out, theservice life of the retention basin will continue to decrease and will not function properly. Sedimentation rate isinfluenced by the condition of the retention basin catchment area including: rainfall, slope, soil type and land cover byanalysis of the USLE method and direct measurements. The retention basin sedimentation rate with the USLE method is492.34 m3/yr and direct measurement is 435.38 m3/yr Therefore the retention basin service life is based on the USLEmethod after the retention basin has been operating for three years with an initial dead storage volume of 1307.49 m3, sothe sedimentation in the weir pond has covered the intake or predicted its useful life is only around 2.65 years. Directmeasurement results obtained the remaining volume of dead storage is 1.33 m3, the remaining service life of Beroanginretention basin is around 0.0031 years.