![]() The aim of this study was to validation SILAHAN prediction models from surface runoff aspects on a plot scale as the basis for formulating recommendations for the most complex land management technology. Indonesian Soil Research Institute developed a recommendation model for the land management information system (SILAHAN) based on the study of criteria for soil conservation indicators with calculation of erosion hazard index and surface runoff. However there are some problems to manage, one of them is many existing upland in sloping areas and high risk to erosion and runoff. Upland has potential uses for agriculture practices in indonesia. The result shows that the conservation service models be applied Keduang Watershed, Wonogiri is over estimed abaut 29.54 %, Rational model is over estimed abaut 49.96 %, and MUSLE model is over estimed abaut 48.47 %. MUSLE parameters model use are: rainfall erosifity (RM), soil erodibility (K), slope length (L), slope (S), land cover (C), and soil conservation practice (P). Rational parameters model use are: runoff coefisient, soil type, slope, land cover, rainfall intensity, and watershed areas. This Coefisient connected with Soil Hydrology Group (antecedent moisture content/AMC), landuse, and cultivation method. The deferent rainfall between runoff relationship kurva Runoff Coefisient (Curve Nunmber/CN). SCS parameters model use are: runoff, rainfall, deferent between rainfall runoff. Explain the data analysis, and flow to get the data. ![]() ![]() The aim of the reseach is to estimate volume runoff, maximum discharge, and soil erosion with SCS, Rational, and MUSLE models on Keduang Watershed. Hydrologic modelling has been developing and it is usefull for basic data in managing water resources.
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