Regional Flood Control Planning & Design, Water Resources

Wood/Patel performed detailed hydrology in support of the rehabilitation design of White Tanks FRS No. 4. Storms evaluated included: 100-year, 24-hour; PSH; SDH; and site specific Probable Maximum Flood for multiple durations and storm distributions. The hydrologic analysis also evaluated current and MAG future land uses for the contributing watershed. Civil design and construction document development included: survey, flood pool grading, low-flow and outlet channels, principal spillway, auxiliary spillway, special provisions, cost estimates, design report documentation, and agency coordination. The refined inflow design floods enabled the team to reduce the proposed dam height by 3.5 feet and resulted in multi-million dollar cost savings. Wood/Patel also defined the design concept for the principal and auxiliary spillway outlet configuration and evaluated the hydraulic performance of the reservoir utilizing the unsteady state capabilities of HEC-RAS.

Project Highlights

  • Hydrologic models for multiple design storms to define the Inflow Design Floods
  • Refined designed led to a multi-million dollar cost savings
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Location

Buckeye, AZ

Client

Flood Control District of Maricopa and NRCS

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