Analysis of Erosion Risk Level in Upstream of Sempor Reservoir

HILDA JULIA, AISAR NOVITA

Abstract


The high rate of erosion in upstream of Sempor reservoir is the main factor of reason for high the deposition in Sempor reservoir, where based on measurement data of sedimentation in Sempor reservoir 1994 that the total catchment volume reduction due to sedimentation was 12.04 million m3 in the period of 16 years (from 1978 to 1994) or 752,500 m3/year. It will give bad impact for all parties, including the increased risk of flooding, reduction in irrigated land area and interrupt operation of hydroelectric power. This study aims to determine the erosion risk level in upstream of Sempor reservoir in actual conditions (at the time of the research) based on The Universal Soil Loss Equation (USLE) formula, by applying a Geographical Information System (GIS) Analysis. Three types of maps was used in analysis , i.e. soil, slope, and land cover maps. The results showed that the rate of erosion in upstream area of Sempor reservoir was in the level IV of erosion risk level, which was 225.24 tons/ha/year or 12.51 mm/year. It is necessary to immediately improve land use as an effort to reduce high erosion rates so that all existing sectors can run well upstream and downstream of the Sempor reservoir.

Keywords


Erosion, GIS, Sedimentation, Sempor reservoir, USLE

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References


Abdurachman. A., S. Sutono. and N. Sutrisno. 2005. Erosion Control Technology for Slope Land. Center for Soil Research and Development and Agro-climate, Agricultural Research and Development Agency, Ministry of Agriculture, Bogor

Ambar, S dan A. Syafrudin. 1979. Jatiluhur Watershed Erosion Mapping. Colloquium paper of Erosion Problem in Jatiluhur Watershed, Institute of Ecology, Padjadjaran University, Bandung.

Asdak, C. 2002. Hydrology and Watershed Management. Gadjah Mada University Press, Yogyakarta.

Ayunin, Q. 2008. Prediction of Erosion Risk Level by Using USLE Method in East Slope of Sindoro Mountain. Faculty of Agriculture. Sebelas Maret University, Surakarta.

Bols, P. L. 1978. The Iso-Erodent Map of Java and Madura. Belgian Technical Assistance Project ATA 105, Soil Research Institute, Bogor.

Bryan, R.B. and J. Poesen. 1989. Laboratory Experiments on the Influence of Slope Length on Runoff, Percolation and Rill Development. Earth Surface Processes and Landforms 14: 211-231.

Del Mar Lpez T., Mitchel Aide T., Scatena F.N. 1998. The Effect of Land Use on Soil Erosion in the Guadiana Watershed in Puerto Rico. Caribbean Journal of Science 34: 298307.

Department of Forestry. 1998. Preparing Guidelines of Technical Plans for Rehabilitation, Field Techniques and Soil Conservation in Watershed Areas. Department of Forestry, Jakarta.

Elangovan AB, Seetharaman R. 2011. Estimating Rainfall Erosivity of the Revised Universal Soil Loss Equation from Daily Rainfall Depth in Krishanagiri Watershed Region of Tamil Nadu, India. International Conference on Environmental and Computer Science IPCBEE. 2011; 19(2011): 4852p.

Forest Conservation Act. 2002. Riparian Forest Buffer Panel (Bay Area Regulatory Programs), http://www.riparianbuffers.umd.edu/manuals/regulatory.html+60%25+forest+soil+conservation&hl=en&ie=UTF-8. (7/29/2002).

Haigh, M.J., Rawat, J.S., Bartarya, S.K. and Rai, S.P. 1995. Interactions Between Forest and Landslide Activity Along New Highways in the Kumaun Himalaya. Forest Ecology and Management 78 (1-3): 173-189.

Herawati, T.,2010. Spatial Analysis of Erosion Danger Level at Cisadane Watershed Area Bogor District. Journal of Forest Research and Nature Conservation Vol.VII No.4 : 413-424

Huang, C., L.K. Wells, and L.D. Norton. 1999. Sediment Transport Capacity and Erosion Processes: Model Concepts and Reality. Earth Surface Processes and Landforms 24: 503-516.

Komas C., Danalatos N., Cammeraat L.H., Chabart M., Diamantopoulos J., Farand R., Gutierrez L., Jacob A., Marques H., Martinez-Fernandez J., Mizara A., Moustakas N., Nicolau J.M., Oliveros C., PinnaG., Puddu R., Puigdefabregas J., Roxo M., Simao A., Stamou G., Tomasi N., Usai D., Vacca A. 1997. The Effect of Land Use on Runoff and Soil Erosion Rates Under Mediterranean Conditions. Catena 29: 4559.

Morgan, R.P.C. 1992. Soil Conservation. 2nd edition. Longman, Harlow.

Pankau, R.C., J.E. Schoonover, K.W.J. Williard, and P.J. Edwards. 2012. Concentrated Flow Paths in Riparian Buffer Zones of Southern Illinois. Agroforestry Systems 84: 191-205. DOI 10.1007/s10457-011- 9457-5.

Singh, T.V. and Kaur, J. 1989. Studies in Himalayan Ecology and Development Strategis. Himalayan Books, New Delhi.

Solaimani K., Modallaldoust S., Lotfi S. 2009. In-vestigation of Land Use Changes on Soil


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