Evaluasi Karakteristik Daerah Tangkapan Air Sebagai Acuan Kegiatan Konservasi Sumber Daya Air

Abstract

ABSTRACT The increasing incidence of floods and droughts from year to year, indicating the destruction of water catchment areas. To the rescue of the catchment area should be done immediately. Preparation of spatial plans must accommodate the rescue catchment areas purpose, with no opening forests in the region. Opening of the forest to the wake region will be lead to increase floods and droughts in the downstream region. From year to year the condition persists, so the level of water availability has declined and losses due to floods has increased. Water crisis increasingly felt, not only in Indonesia, even this is global crisis, the longerof the water crisis is getting worse and leads to a disaster that the solution must be done immediately. Evaluation characteristics of the catchment area as a manufacturers producing surface water and groundwater needs to be done, to assess changes in the characteristics of the catchment area, towards the conservation of water resources can be focused and on target. Because it is associatednwith water results, then evaluation characteristics of the catchment area is done with the approach flow parameters in rainfall models. One of the popular models used rain flow, especially in the Java is FJ.Mock models, this model was developed from research in several watersheds in Java. From the research to changes in catchment characteristics with Mock model approach to Rawapening Reservoir catchment, from year to year decreased infiltration parameter values, whereas the direct flow increased. Refers to changes in the characteristics of the DTA, conservation activities to be done is to increase the infiltration capacity and reduce flow area directly. While the analysis of land use change, forest area declined from year to year and the areas of increased impermeable. Keywords: catchment areas, direct flow, Mock, and Infiltration