Seite - 553 - in Book of Full Papers - Symposium Hydro Engineering

Inflow Outflow Reduction Defer Time Inflow Outflow Reduction Defer Time (m3/s) (m3/s) (m3/s) Hour (m3/s) (m3/s) (m3/s) Hour 1 2 th 184,70 162,38 22,33 1,50 30,36 25,75 4,61 3,50 2 5 th 242,87 198,70 44,17 3,00 38,80 31,60 7,20 4,00 3 10 th 281,60 218,48 63,12 3,50 44,42 35,00 9,42 4,00 4 25 th 330,72 239,36 91,36 4,00 51,54 38,73 12,82 4,50 5 50 th 365,00 253,25 111,75 4,00 56,52 41,05 15,47 4,50 6 100 th 403,60 340,42 63,18 3,00 62,12 43,52 18,60 4,50 7 1000 th 524,10 519,33 4,77 0,50 79,60 73,87 5,73 2,00 8 PMF 1,242,96 1,227,04 15,92 - 253,97 250,89 3,08 - No Periode Ciawi Dam Sukamahi Dam Table 5 Summary of Flood Routing through Tunnel in Ciawi and Sukamahi Dam Fig. 8 Change of Discharge in Return Period of 50 year, at Katulampa Weir, due to Ciawi Dam and Sukamahi Dam From the flood discharge routing for return period of 50 year, with the construction of Ciawi Dam and Sukamahi Dam, the flood discharge in the down stream of Ciliwung River is 577,05 m3/s. If it’s deducted by the discharge to East Flood Canal 60,0 m3/s, therefore the discharge at Manggarai gate would be 517,05 m3/s. The current status of these dam is progressing with site preparation, land acquisition, etc, with schedule of construction commencing in the month of, November, 2017 and plan of completion in 2019. 4. CONCLUSION This paper can explain the advantages of Dry Dam with single purpose for flood control. Major conclusions are as follows: a. The dry dam is one of the alternatives for flood control in the urban area, when the resettlement to be main issues in the urban area. TIME (Hour) 2 Hour WITHOUT DAM WITH DAM 553