ANALISIS DEBIT BANJIR DAERAH ALIRAN SUNGAI CIMANUK
DENGAN ADANYA BENDUNGAN JATIGEDE
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
WEHARIMA, ADIKA
Pantouw, John Paulus
Pantouw, John Paulus
Subject
Teknik Sipil
Datestamp
2019-10-07 06:08:01
Abstract :
Cimanuk River is one of the watersheds which is considered critical. These conditions caused water to overflow easily when rain conditions occured. Jatigede Dam has been built in the upperstream of the river as one of the flood control efforts and are expected to reduce the flood discharge that occurs, but not in the central and downstream of the river. Based on these situations and conditions, it is possible that floods occur in the central and downstream of the river, therefore it is necessary to do an analysis and calculation, analysis of flood discharge in the central and downstream parts of the river is necessary to be used for flood control in other parts of the river later on. Flood discharge analysis using Nakayasu Synthetic Unit Hydrograph method. From the results of the analysis, the flood discharge of Cimanuk River without the existence of the dam is higher than the flood discharge of Cimanuk River with the existence of the dam. This proves that the existence of Jatigede Dam can reduce floods that occur in the Cimanuk River. For 100 years return period, flood discharge of Cimanuk River without the existence of the dam was 6358,975 m3/second while flood discharge with the existence of the dam was 4330,868 m3/second and the reduction of flood that occurred was 32%
Cimanuk River is one of the watersheds which is considered critical. These conditions caused water to overflow easily when rain conditions occured. Jatigede Dam has been built in the upperstream of the river as one of the flood control efforts and are expected to reduce the flood discharge that occurs, but not in the central and downstream of the river. Based on these situations and conditions, it is possible that floods occur in the central and downstream of the river, therefore it is necessary to do an analysis and calculation, analysis of flood discharge in the central and downstream parts of the river is necessary to be used for flood control in other parts of the river later on. Flood discharge analysis using Nakayasu Synthetic Unit Hydrograph method. From the results of the analysis, the flood discharge of Cimanuk River without the existence of the dam is higher than the flood discharge of Cimanuk River with the existence of the dam. This proves that the existence of Jatigede Dam can reduce floods that occur in the Cimanuk River. For 100 years return period, flood discharge of Cimanuk River without the existence of the dam was 6358,975 m3/second while flood discharge with the existence of the dam was 4330,868 m3/second and the reduction of flood that occurred was 32%
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