Flood modeling is one of the recognized effective means of assessing the flood
risk to people and property. In this study, the concept of flood modeling is applied
in Musimusi river at Balingasag, Misamis Oriental. Using the Hydrologic Modeling
System… More
Flood modeling is one of the recognized effective means of assessing the flood
risk to people and property. In this study, the concept of flood modeling is applied
in Musimusi river at Balingasag, Misamis Oriental. Using the Hydrologic Modeling
System (HMS) and River Analysis System (RAS) of the Hydrologic Engineering Center
(HEC), hydrologic and hydraulic models were developed to conduct simulations on
the rainfall-runoff and flood inundation processes. Data from the Typhoon Seniang
event was used as main input for the calibration of basin model and consequently
validated using quantitative statistics. Further simulations on specific return
periods using historical data from PAG-ASA were conducted using the calibrated
model. River flow hydraulics was performed through unsteady flow analysis
reconstructing the Typhoon Seniang event and constructing the 5-year, 25-year
and 100-year return period scenarios, spatially illustrating flood inundations on the
floodplain of Musimusi. Results of this research revealed successful simulation of
flood scenarios indicating applicability of both developed HEC-HMS and HEC-RAS
models. Moreover, with the integration of high resolution Digital Elevation Model
(DEM), modeling is significant towards consequent development of highly precise
and detailed flood hazard maps helpful especially to local governing units for the
total improvement of disaster risk reduction strategies. Less