KAJIAN DISTRIBUSI SEDIMENTASI WADUK WONOREJO, TULUNGAGUNG-JAWA TIMUR

Abstract

This study aims to know the distribution of sedimentation of the most suitable method among
the Emperical Area Reduction Method and Area Increment Method for predicting the the distribution
of sediments in the Reservoir Wonorejo. While the purpose of this study was to determine the base
elevation of a new reservoir (new zero elavation) after the existing sediments. With both methods
can be known distribution of sediments in the reservoir for the operating life of 8 years and 11
years. After analysis, it can be concluded that Emperical Area Reduction Method is more suitable to
predict the distribution of sedimentation in reservoirs Wonorejo. For operasi period of 8 years,
sediment has reached an elevation of +122,21 m which is at 2.21 m above the base elevation
reservoirs, the amount of sediment that settles in the reservoir is 2,0608. and for the operation
of 11 years, sediments deposited reaches two, 2,2371. at an elevation of +123,47 m or 1,47
m above the base elevation of the reservoir.

Key word : Distribution of Sedimentation