Flood Risk Analysis of Godo River Basin, Pati Regency, Central Java, Indonesia, using HEC-Geo RAS estimated from pure-component properties

Dominated by lowland area, most of Pati Regency was identified as inundation area. Flood risk assessment, which is resulted from two factors hazard and vulnerability, are adopted to forecast physical effect of flood on the study area. Hazard depends only on the flow regime of the river and is independent of the land use of the flood plains. Another factor, vulnerability is assumed as the sensitivity of land use to the flood phenomenon, which depends only on land use types. Based on the modeling result, from the largest area that affected by flood are settlement, irrigated paddy field and dryland agriculture, respectively. These results can be useful for government to prepare and determine reasonable mitigation for flood management system.

food

hazard

vulnerability

risk

modeling

land use

HEC-Geo RAS