Water level in Rawa Danau Swamp in Cidanau Watershed, at present and in the past
Basa, Erizal Rangkayo
Setiawan, Budi Indra
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Cidanau River flows from Rawa Danau swamp, collecting water in Cidanau watershed, and out from the watershed at a waterfall, Cirug Betung. At the exit from the watershed, excavation of a channel, completed in 1940s, has lowered water level upstream. We investigated water levels and their fluctuations in the swamp by conducting a land survey and leveling, and by installing water level sensors. Water flow models that control the water levels in the swamp and at the exit are also considered and applied. Based on the observations and the hydraulic models, present water level change, water level difference between at present and in the past, the effects of water storage in the swamp on both draught and flood discharges are calculated and discussed.
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