Analisis Sedimentasi Pada Bendungan Pandanduri Lombok Nusa Tenggara Barat

Abstract

The guard dams are the dams that are located at the valley, the villages of Suangi, the sacred cities, the districts of the eastern mines, the western Nusa Tenggara. Which was built in 2011 and officially inaugurated in 2014 with a type of rectangular core cluster construction. The dam has a total area of 315,7 Ha, with a capacity of 27 million m3, it has an irrigation function of 5168 Ha, in addition to having benefits as flood control, land fishing, tourism as well as the development of micro hydro power plants. Sedimentation is the process of depositing erosion material in a particular place of material that ends up in flood areas, waterways, rivers, and reservoirs due to soil erosion, be it surface erosion or other soil erotion that settles at the bottom of the surface. The result of the Sedimentation Analysis on the Pandanduri Dam is to find out the classification of erosion levels and simulation of conservation changes in the land of the Palung DAS. The method used is the USLE (Universal Soil Equation) method with the help of the ArcGIS software application. The rate of erosion that enters the pond with the USLE (Universal Soil Equation) method is 778,56 Tons/Ha/Year, while the high rate of erotion entering the ponds with the SDR (Sediment Delivery Ratio) approach is 141.189.28 m3/Ha/year, and for the remainder of the pond life is 25 years, 5 month.

 

Keywords: ArcGis, Sedimentation,Pandanduri Dam,Useful Life