Erosion and sedimentation analysis as basic reference for land conservation planning on lesti Sub-watershed

The Lesti sub-watershed area is mostly steep mountain slopes, when the rain fall it carries erosion and sediment material. This study aims to discover trend of land-use changes; measure amount rate Erosion Hazard Levels; obtain sediment-transport actual quantity based on SWAT application; scatter land critical-level; determine strategy for implementing conservation controlling rates. Level were obtained as follows: Class I 11.92%; II 27.45%; III 43.85%; IV 13.06%; V 3.99%. Four (4) parameters overlaid criticality level are: coverage, slope, risk level, management aspect. Generally, Sub-Watershed categorized as: very critical 0.14%; 4.61%; a rather 28.06%; potential 53.66%; normal 13.51%. From analysis average value respectively soil 119.60 tons/ha/year; yields 310.77 rainfall 2143.27 mm/year; surface runoff 1120.65 mm/year. suggestions watershed conservancy requires vegetative (planting) mechanical (building) method. method such alleys cropping; reforestation; agroforestry; relay cover cropping natural green manure; living fence; mixed farm; mulch; environment greening; strip with 20.65% effectivity; filter 26.03% effectivity. contour tillage 29.71% terracing 23.41% check dam 17.50% mound.