MODEL VOLUME RESAPAN AIR HUJAN PADA SUMUR RESAPAN DI KECAMATAN RUMBAI KOTA PEKANBARU

Abstract

The research have been done to know about The Rain Water absorption in the absorption wells Rumbai Subdistrict of Pekanbaru. Absorption volume gained form two dimention geoelectric data using schlumberger electrode konfiguration with 164 meter offset. Geoelectric data processing using Res2dinv software resulted resistivity of lithology. Based on resistivity value can be known permeability soil formation as 75,41 m/day.Using rainfall average on Pekanbaru from BMKG data as 0,27 mm3/hour, so resulted well absorption volume one dimension of well absorption for house type 36 as 15,23 m3; two dimension of well absorption for house type 38; type 45; and type 48 resulted as 19,58 m3 for while four dimension well absorption for house type 54 resulted the rainfall absorption volume as 40,82 m3. The groundwater used by society as 8674,02 m3/day, and by industry as 0,4 m3/day.