SPATIAL ANALYSIS OF EROSION AND LAND CRITICALITY OF THE UPSTREAM CITARUM WATERSHED

Abstract

High soil sedimentation in the Upstream Citarum Watershed has reduced the capacity of aging
Saguling Hydroelectric Power Plant in West Bandung, West Java, a supplier of electricity to Java and Bali.
The purpose of this study is to assess the level of erosion danger and land criticality occurring at the Upstream
Citarum Watershed to characterize conservation measures to reduce soil and water sediment transfer to
reservoirs. To estimate the value of the actual distribution of soil erosion in the river basin, we use the modelbased Arc-GIS USLE, which incorporates information on the spatial allocation of each parameter USLE. Cell
grid systems available in GIS feature robust functionality; at each grid cell on the map overlay, results can be
obtained for the value erosion rate per unit area grid cell, which can then be converted into the speed of erosion
per hectare. Simulation results in various fields to control sedimentation caused by erosion in the soil have
incorporated the fact that vacant land has been converted into plantations; land adjustment can be simulated
with existing spatial planning and the installation of a check dam for sediment control. However, this approach
is not optimal to reduce the impact of the age of the reservoirs. To optimize the Upstream Citarum Watershed
requires management of various technical and non-technical aspects of the relationships among groups of users
and the areas, and of sustainable conservation systems for agriculture.High soil sedimentation in the Upstream Citarum Watershed has reduced the capacity of aging
Saguling Hydroelectric Power Plant in West Bandung, West Java, a supplier of electricity to Java and Bali.
The purpose of this study is to assess the level of erosion danger and land criticality occurring at the Upstream
Citarum Watershed to characterize conservation measures to reduce soil and water sediment transfer to
reservoirs. To estimate the value of the actual distribution of soil erosion in the river basin, we use the modelbased Arc-GIS USLE, which incorporates information on the spatial allocation of each parameter USLE. Cell
grid systems available in GIS feature robust functionality; at each grid cell on the map overlay, results can be
obtained for the value erosion rate per unit area grid cell, which can then be converted into the speed of erosion
per hectare. Simulation results in various fields to control sedimentation caused by erosion in the soil have
incorporated the fact that vacant land has been converted into plantations; land adjustment can be simulated
with existing spatial planning and the installation of a check dam for sediment control. However, this approach
is not optimal to reduce the impact of the age of the reservoirs. To optimize the Upstream Citarum Watershed
requires management of various technical and non-technical aspects of the relationships among groups of users
and the areas, and of sustainable conservation systems for agriculture.