Analisa Perubahan Tata Guna Lahan Terhadap Karakteristik Hidrologi Dengan HEC HMS dan GIS untuk Mitigasi Bencana

Abstract

Land use change occurred on the cathcment area into other lond use will effect on the enviromental change which bring into disaster on dawnstream qrea. The uncontrolled lond use chqnge may impact on run-off volume into cqtchment qrea. The aim of tle research is to reveal the impact of land use change to discharye in the Catchment Area of Glagahwero. Simulation of dircharye has applied hydrologt model and other dato in 2006 and 2009 . The result of simulation hove god accuralion wilh lrlosh ru*nber 0,8449 qnd 0,6798 in year 2006 ond 2009 respectively. The analysis resull has been obtained that forest change into setilemenl area as much as 2 % will increqse 2 ?6 disclwrye in lhe riveri so thst lqrd use change forest have effect strong enough lo dirchorge in Glagahwero Catchment Area.