¹ Geospatial Research Center, National Research and Innovation Agency of Indonesia (BRIN), Jalan Raya Jakarta Bogor KM 47 Cibinong, Bogor, West Java 16911, Indonesia

² Department of Geophysics and Meteorology – FMIPA | GEOMET Wing 19 Level 4 FMIPA Building, Dramaga Bogor Campus 16680

³ Faculty of Agriculture, Djuanda University,  Jl. Tol Ciawi No.1, Ciawi-Bogor, West Java 16720

Email: jaka008@brin.go.id

In addition to experiencing problems with water availability and quality, the Citratum watershed is also experiencing problems with soil erosion and sedimentation. The impacts of climate change and land use cover are the main causes of reduced yields and water quality as well as tradeof soil erosion and sediment. Thus, monitoring of water conditions and soil erosion are prioritized in the Central Citarum watershed with an area of 273,634  hectares.  This study aims to estimate the spatial distribution of sediment exports and soil erosion in Central Citarum. The method used to calculate sediment export and soil erosion is the INVEST Sediment Delivery Ratio Model.   The results showed that the total export of sediment from the Central Citarum watershed was 4.61 x million tons/year or an annual average of 20.31 tons/ha/year.  By the largest distribution: subwatershed  Cihalang, subwatershed  Cilawang 2,  subwatershed    Cipada, subwatershed  Cilawang , and subwatershed  Cihalayang, contributed 14.83%, 13.00 %, 12 ,71 %, 9.9 % and 5.78%, respectively. Meanwhile, the total soil erosion is 23.16 million tons/year or an annual average of 102, tons/ha/year. with the largest distribution: subwatershed  Cihalang, subwatershed   Cilawang 2,  subwatershed    Cipada, subwatershed   Cilawang , and subwatershed  Cihalayang,, contributing 12.73% , 12.33 %, 10.55 %, 9.34 and 5.84% respectively.