The Land converted in the form of road construction crossing protected forest areas has resulted in the loss of vegetation diversity and while surface flow and erosion are accelerated. This research aimed at determining the effectiveness of land and water conservation practices in controlling runoff and erosion. The research method adopted in this investigation uses a multislot divider measuring 10 m x 5 m with a slope of 25% on geogrid, geonet, and vegetation cover plots, where each plot comprises 3 pieces, accumulating to 9 units. The result showed the highest total runoff between June and November in the geogrid plot (531.61 m³/ha). This was followed by the geonet (492.5 m³/ha), while the lowest value was recorded in the vegetation cover plot (174.7 m³/ha), with 1336 mm of rainfall. These outcomes collectively had a directly proportional relationship with the total land erosion, and similar rainfall at 94.17 tons/ha, 73.9 tons/ha, and 42.4 tons/ha for geogrid, geonet, and vegetation cover plots, respectively. The results demonstrated the effect of rainfall and slope on runoff as well as erosion and also provide valuable information on the negative impact of land conversion from vegetation cover to other uses.