Determination Of Agro-Hidrology Drought hazard index for drought risk analysis and mitigation (A Case Stuies Kariango Watershed South Sulawesi)

Abstract

Agro-Hydrological drought can be interpreted as a shortage of surface water and groundwater supplying and insufficient for the plants and society needs a certain period. So far there have been no study assessing the agro-hidrology drought index. This study develops a Drought Hazard Index (DHI) as an indicator of Agro-Hydrological drought. The model developed from a combination of dry season rainfall, ground water depth, distance of water sources, soil texture and Water Supply Vegetation Index (WSVI) using remote sensing and GIS methods. Further analysis was caeried out to develop vulnerability and risk of drought which gave an overview of areas that need to be formulated for drought mitigation in the Kariango watershed. Agro-hidrologi Drought Hazard Index was DHI = (0.33CH) + (0.27KAT) + (0.20SA) + (0.13T) + (0.06WSVI) with model validation results showed high similarity drought in the field. The results of the analysis of vulnerability describes 25 % of villages are classified vulnerable. In the drought risk analysis shows the highest class are 19.52 % and 40.98 % are the dominant from paddy fields So that the mitigation efforts created are made together in the form of regulation and capacity building with reference to the combination of risk parameters included hazard risk and vulnerability.