ESTD PERPUSTAKAAN UNTAD
ESTD PERPUSTAKAAN UNTAD
| JudulANALISIS EROSI DAS MAMARA DENGAN OUTLET DI SALURAN PEMBUANG IRIGASI GUMBASA DI KELURAHAN PETOBO |
| Nama: NURAZIZAH |
| Tahun: 2022 |
| Abstrak Mamara Watershed (DAS) is a critical watershed category with a large potential for erosion and flooding, causing sedimentation in the Gumbasa Irrigation Drain. Petobo. The purpose of this research is to find out how much erosion occurs in the Mamara watershed. This study uses the USLE method and Geographic Information System as a digital analysis tool. The results of the analysis of the rate of erosion that occurred in the Mamara watershed for 10 years from 2011 to 2020 were 2503255.01 tons/year or equivalent to 487.71 tons/ha/year with a thick layer of eroded soil of 27.10 mm/year. When compared with the erosion hazard classification figures set by the USDA, the erosion level in the erosion hazard class V (>480 tons/ha/year) and the class erosion rate in the Mamara watershed are included in the very heavy category. Keywords: Watershed, USLE Method, Geographic Information System. |