Sediment yield accumulation at reservoir (Batang Ai Dam)
Modified Universal Soil Loss (MUSLE) which is one of the empirical prediction techniques was used to estimate the annual soil loss at catchment area of Batang Ai dam. The catchment area is about 1200km² and the rainfall data was analyzed for 20 years duration whic...
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| Main Author: | |
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| Format: | Final Year Project Report |
| Language: | English English |
| Published: |
Universiti Malaysia Sarawak, UNIMAS
2009
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| Subjects: | |
| Online Access: | http://ir.unimas.my/id/eprint/6543/1/SEDIMENT%20YIELD%20ACCUMULATION%20AT%20RESERVOIR%20%28BATANG%20AI%20DAM%29%20%2824%20pgs%29.pdf http://ir.unimas.my/id/eprint/6543/8/Sharifah%20Azmin.pdf http://ir.unimas.my/id/eprint/6543/ |
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| Institution: | Universiti Malaysia Sarawak |
| Language: | English English |
| Summary: | Modified Universal Soil Loss (MUSLE) which
is
one of the
empirical prediction
techniques was used to estimate the annual soil loss at catchment area of Batang Ai dam.
The catchment area is about
1200km² and the rainfall data was analyzed for 20 years
duration which from 1989 until 2008. The MUSLE parameters such as the soil
erodibility factor, K was obtained from the soil map which contains the description of
soil erodibility classification based
on the symbol of series on the map. Moreover, the
values of slope length and steepness factor, LS are taken from one point to another point
of Batang Ai reservoir. The runoff coefficient, C and crop management factor, CP based
on the references and determi
ned by visual observation of the study area. The obtained
K value is 0.438 whereas LS value is 0.782. In addition, the value of C and CP is 0.015
and 0.010 respectively. Maximum and minimum annual values of sediment yield
obtained using the method is 70,22
4 tons per year and 42,620 tons per year. Besides, the
relationship between rainfall and sediment yield obtained was y = 17.12x
–
320.3
with r²
= 0.950
. This study is important to describe the soil erosion condition of the study area
and give an idea about
erosion and sediment yield which is a serious problem that needs
more attention from the responsible party. The result of this study can be used in order to
improve the implementation of the land management system at the study area. |
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