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Jurnal Manajemen & Sistem Informasi

« Volume 2 Nomor 1 Januari 2005

GROUNDWATER INFILTRATION POTENTIAL ZONATION WITH DRASTIC METHODE (CASE STUDY IN MAJALENGKA AREA S)

Dian Hardijana
Abstrak
Qualitative unconfined groundwater infiltration potential analysis based on Drastic method, this method to developed by Lars Rossen for groundwater vulnerability. Drastic method assumed that contaminants flushed into groundwater by precipitation and transported by water to saturated zone, based on the assumption, this method is applicable for groundwater infiltration potential analysis. The case study was carried out in Kabupaten Majalengka. The study shown that, by significance statistical value for seven groundwater parameter, i.e. precipitation, depth to groundwater, land use, hydroulic conductivity, slope of the land surface, and the grain size distribution of geological material’s, they have significant correlation with infiltration potential of groundwater. The result of the study in Kabupaten Majalengka area conclude that by Drastic index range of 23 – 230, Majalengka area can be divide into 5 (five) categories as follow :
- Very potential area with Drastic index 190 – 230 (6.746,455 ha)
- Potential area with Drastic index 149 – 189 (87.186,308 ha)
- Medium potential area with Drastic index 108 – 148 (, 24.635,978 ha)
- Low potential area with Drastic index 67 - 107 (167,029 ha)
- Very low potential / No potential area with Drastic index about 23 - 66 is critical areas

Kata kunci : Air tanah, Infiltrasi, Metoda Drastic

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