Flood Modeling Analysis of the Cokroyasan Watershed in Bayan District, Purworejo Regency Using HEC-RAS Software

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Flood modeling analysis calculates peak discharge and flood inundation in Cokroyasan Watershed, suggesting improved management strategies.

Flood modeling revealed a maximum discharge of 1684.028 m³/second in the Cokroyasan Watershed, indicating significant flood risk.
Using a design rainfall of 117.6711 mm for a 25-year return period, significant areas at risk were mapped.
Analysis utilized HEC-RAS and ArcGIS to identify flood inundation areas, aiding in regional water management efforts.
Findings suggest that improved watershed management could help mitigate flood impacts in Purworejo Regency.

Fajar et al. (2025) studied this question.

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Flood modeling analysis calculates peak discharge and flood inundation in Cokroyasan Watershed, suggesting improved management strategies.