Analisa Perubahan Tata Guna Lahan Terhadap Karakteristik Hidrologi Dengan HEC HMS Dan GIS Untuk Mitigasi Bencana
Widiarti, Wiwik Yunarni
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Land use change occurred on the cathcment area into other land use will effect on the enviromental change which bring into disaster on downstream area. The uncontrolled land use change may impact onrun-off volume into catchment area. The aim of the research is to reveal the impact of land use change todischarge in the Catchment Area of Glagahwero. Simulation of discharge has applied hydrology modeland other data in 2006 and 2009 . The result of simulation have good accuration with Nash number0,8449 and 0,6798 in year 2006 and 2009 respectively. The analysis result has been obtained that forestchange into settlement area as much as 2 % will increase 2 % discharge in the river, so that land usechange forest have effect strong enough to discharge in Glagahwero Catchment Area.
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