Rfp Consultant Services To Update The Orange County Hydrology Manual

The Orange County Flood Control District and the County of Orange oversee an extensive network of flood conveyance systems, including over 380 miles of facilities and more than 35 regional detention basins and dams. The existing hydrology manual, originally established in 1986 with a 1996 addendum, provides essential computational criteria for estimating runoff, discharges, and flood control facility sizing within the county. The current project aims to update this manual by reviewing and refining hydrologic procedures, incorporating over four decades of runoff data since the initial calibration, and integrating considerations related to climate change and post-fire hydrology impacts. To achieve this, the Orange County Flood Control District is soliciting proposals from qualified consultants to undertake the update of the Hydrology Manual. The contract, valued between $500,000 and $2,000,000, is managed by OC Public Works and is open for responses until June 17, 2025. The project emphasizes modernizing hydrologic models to reflect current conditions and future challenges, ensuring the county’s flood management infrastructure remains effective and resilient. Interested parties can contact Albert Rodriguez via email for further information and access the project details through the provided procurement portal.