analysis of characteristic and peak discharge at the watershed Kungkai river of Kabupaten Seluma

Khairul Amri(1),
(1) Civil Engineering, University of Bengkulu, 

Abstract


This study aims to determine the value of cracteristic and determine the peak discharge at the watershed Kungkai water . Analysis of rainfall frequency analysis to determine the design rainfall and peak discharge calculations using the rational method . Tofografi maps derived from soil slopes > 8 % had extensive 16208.7262 ha ( 48.987 % ) , 8-15 % slope has an area of 4700.8116 ha ( 14.207 % ) , 15-25 % slope has an area of 5769.5998 ha ( 17.437 % ) , 25-40 % slope has an area of 5270.7641 ha ( 15.930 % ) , slope > 45 % by having broad 1138.1056 ha ( 3.44 % ) . Land use in the watershed area Kungkai based on each type of land cover , land cover types dominated by rubber plantations of 9406.143 hectares ( 28.428 % ) , and oil palm plantations for 6684.0746 hectares ( 20.20 % ) . For the distribution of soil types in the watershed is dominated by the type of soil Dystropepts Kungkai , hydraquents and tropopsamments . Rainfall annual average 1797,63 m. The watershed Kungkai is the right pattern of rainfall distribution is the distribution of water in the watershed People Kungkai Log III and rain design for maximum rainfall data for a period of between 2 , 5 , 10 , 20 , 50 , 100 years is 61.98 mm , 04:04 mm , 136.89 mm , 183.87 mm , 222.77 mm and 265.04 mm . Peak discharge that occurs when the 2 -year anniversary is m3/second 83.075 , 152.580 m3/second was 5 years old , 10 years is m3/second 215.286 m3/second was 25 years , 50 years is 412.142 m3/second , 100 years is 526.564 m3 / sec .


Keywords


Kungkai; watershed; soil slopes; rain design; peak discharge

Article Metrics

 Abstract Views : 44 times

Refbacks

  • There are currently no refbacks.