Project Details

Lower Gila River Overflow FDS

Public Meetings

Currently there are no public meetings scheduled for this project.

Past Public Meetings

• 3/21/2019
Project Contact: Felicia Terry
Region: SW
District: 4 - Clint L. Hickman
Phase: Floodplain Delineation
Description:

View a map of the Overflow Area Floodplain Delineation with zone designations.

FCD has recently begun a new floodplain delineation study of the Lower Gila River between Miller Road and Bullard Avenue in cooperation with the Cities of Buckeye and Goodyear. The new study uses updated topographic mapping and a recently approved FEMA model (HEC-RAS 2D). The model will evaluate the spillover from the river to the north into the Lower Gila River Overflow Area (previously referred to as the Buckeye Slough which is located between Apache and Perryville Roads on the north side of the river). This new modeling will provide more accurate floodplain delineation potentially decreasing floodplain limits and flood depths. There may be, however, some areas where the flood depths could increase.

The Lower Gila River floodplain downstream of the Overflow Area, between the Hassayampa River and Miller Road, is also being evaluated using recent topographic mapping. This area will be included in the delineation if there are meaningful changes to the floodplain limits or depths.

Status:

FCD has recently completed a draft of the Lower Gila River Overflow Area Floodplain Delineation Study (LGO FDS) between Apache Road and Perryville Avenue on the north side of the river. The LGO FDS was prepared in cooperation with the City of Buckeye. The new study uses a recently approved FEMA model (HEC-RAS 2D). The model will evaluate the spillover from the river to the north into the Lower Gila River Overflow Area (previously referred to as the Buckeye Slough). This new modeling will provide more accurate floodplain delineation potentially decreasing floodplain limits and flood depths. There may be, however, some areas where the flood depths could increase or remain the same.

The LGO FDS will be submitted to FEMA as an appeal to the Lower Gila River Floodplain Delineation Study that was completed in 2016 and is in the 90-day appeal period until May 20, 2019. The results of the study were presented at the public meeting on March 21, 2019.

Available Documents

Document Name Type Size
Preliminary Results PDF 2.7 MB
Public Comment Period JPG 1.5 MB
Public Meeting Announcement PDF 3.2 MB


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