Patterson Reservoir Remediation Project

The Patterson Reservoir Remediation Project, managed by the Alameda County Water District, aims to restore storage capacity and maximize operating water levels while maintaining the freeboard requirements mandated by the California Department of Water Resources, Division of Safety of Dams. Located in Fremont, California, the project involves constructing earthen berms on the east and west sides of the reservoir and tying them into high ground on the north and south sides to create a continuous ring. To support these construction activities, existing utilities will be relocated, removed from service, or protected in place. The project is classified under NAICS code 237990 and is currently in the forecast stage, with a posted date of August 19, 2026. Construction is anticipated to take approximately six months, occurring between Spring 2027 and Fall 2027. Environmental compliance has been addressed through a Draft Initial Study and Mitigated Negative Declaration under CEQA, with a Notice of Determination filed on August 18, 2026. Dorota Budzynska serves as the Project Engineer for this initiative.