Assessment of Aquifer Susceptibility Due to Excessive Groundwater Abstraction; A Case Study of Yogyakarta-Sleman Groundwater Basin

Yogr-akarta-sleman groundwater basin is onc of productile groundu'ater basins in Indonesia The gro_undrvater basin is bLrilt by unconfineci sand_a<1ui1'er sysiem. Shce lhe early 1930's many schools' inilersiries and hotels have been developed i11 this arca to suppof education and tourjqn A'rivilics anrl since the beginning of 2000 s the numbcr ol buildings has jncreascd signjficar1lly' The cievelopment has rJsulteJin a rapid rate of land use and population changes \\'ith- the conseqtencc oi increasing groundvater pumping. |,'leasurement rcsuhs show tha! the rate of groundlvatcr table degraciati-oicxcee