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| C.C. Whitney Pumping Plant | |
|---|---|
| Name | C.C. Whitney Pumping Plant |
| Location | Near Tracy, San Joaquin County, California, United States |
| Owner | United States Bureau of Reclamation |
| Operator | United States Bureau of Reclamation |
| Opened | 1951 |
| Capacity | 330 cubic feet per second (design intake), multiple pump units |
| Partof | Central Valley Project |
| Notable | Pumps Sacramento–San Joaquin Delta water into the Delta–Mendota Canal |
C.C. Whitney Pumping Plant
The C.C. Whitney Pumping Plant is a major water-lifting facility in California's San Joaquin County that conveys water from the Sacramento–San Joaquin River Delta into the Delta–Mendota Canal, supporting irrigation and municipal supply for the Central Valley Project and regions including the San Joaquin Valley and parts of the San Francisco Bay Area. Commissioned in the mid-20th century and owned by the United States Bureau of Reclamation, the plant is integral to federal infrastructure interacting with statewide systems such as the California State Water Project and regional agencies like the Westlands Water District and the Metropolitan Water District of Southern California. Its role intersects with legal and regulatory frameworks including the Reclamation Act and the Endangered Species Act through operational constraints tied to fisheries like the Delta smelt and anadromous species such as the Sacramento River Chinook salmon.
Construction of the plant began as part of the post-World War II expansion of the Central Valley Project to improve water delivery for agricultural reclamation projects authorized under the Reclamation Act and subsequent appropriations. The facility was completed and began operations around 1951 during the era of large federal water projects driven by figures associated with the Bureau of Reclamation and influenced by earlier initiatives such as the O'Shaughnessy Dam and the Friant Dam projects. Environmental controversies and litigation in later decades—linked to stakeholders including the Sierra Club, the Natural Resources Defense Council, and state agencies like the California Department of Fish and Wildlife—have shaped operational limits, especially amid changing science tied to the Central Valley Project Improvement Act and rulings related to the California Water Code.
The plant was designed to lift water from the Sacramento–San Joaquin River Delta into the Delta–Mendota Canal and features multiple vertical-shaft centrifugal pump units located at the intake structure adjacent to the C.W. Bill Jones Pumping Plant and near the Tracy Fish Facility. Its structural components include reinforced concrete intake works, trash rakes, screening adapted to standards developed with the United States Fish and Wildlife Service, and electrical infrastructure tied to regional grids including connections historically associated with utilities like Pacific Gas and Electric Company. Engineering design drew upon hydraulic principles used in other major projects such as Shasta Dam and incorporated lessons from flood-control structures like Theodore Roosevelt Dam. The plant’s mechanical specifications include high-capacity pumps, surge protection, and control systems compatible with SCADA systems used across federal water projects.
Operational control is exercised by the United States Bureau of Reclamation in coordination with water rights holders including the Westlands Water District and municipal agencies such as the City of Fresno and City of Modesto. Typical operations involve pumping at designed capacities to meet contractual deliveries governed under Central Valley Project allocation rules and affected by hydrologic conditions arising from the California droughts and atmospheric river events that influence inflow from the Sierra Nevada. The intake capacity and pumped volume are constrained during fish-protection actions coordinated with the National Marine Fisheries Service and the United States Fish and Wildlife Service to mitigate entrainment of species like the Delta smelt and steelhead trout. Seasonal operations also reflect storage coordination with reservoirs such as Trinity Lake and Shasta Lake and with flows managed under agreements involving the Sacramento River Settlement Contractors.
As a component of the Central Valley Project, the pumping plant provides a hydraulic link between the delta source and the southern delivery system, directly feeding the Delta–Mendota Canal which supplies agricultural lands served by districts including Westlands Water District and urban areas reliant on transferred allocations such as the Bay Area and San Joaquin County. Its operation complements major CVP features including Friant Dam, New Melones Dam, and the Shasta–Trinity system, participating in coordinated water operations subject to federal policy instruments including the Central Valley Project Improvement Act and court decisions such as cases involving the State Water Resources Control Board. The plant thereby influences allocation, conveyance scheduling, and emergency responses during flood events tied to the American River and Sacramento River systems.
The plant’s diversion of delta water has significant hydrologic and ecological effects on the Sacramento–San Joaquin River Delta bioregion, contributing to altered flow patterns that affect estuarine salinity, sediment transport, and habitat conditions used by species protected under the Endangered Species Act and managed by entities including the California Department of Fish and Wildlife. Environmental mitigation measures—developed in collaboration with organizations such as the Environmental Protection Agency and non-governmental groups like the Natural Resources Defense Council—include fish screens, flow prescriptions, and adaptive management strategies tied to scientific research from institutions such as the University of California, Davis and the Scripps Institution of Oceanography. Climate change projections from National Oceanic and Atmospheric Administration and Intergovernmental Panel on Climate Change assessments have prompted re-evaluation of long-term operations, reservoir releases, and conveyance reliability.
Maintenance is performed by the United States Bureau of Reclamation with periodic overhauls of pump units, electrical systems, and intake screening to meet updated standards from agencies including the United States Fish and Wildlife Service and the National Marine Fisheries Service. Upgrades over time have included modernization of control systems with digital SCADA deployments, improvements in fish-protection technology developed with researchers at California State University, Sacramento, and seismic retrofits informed by guidance from the United States Geological Survey and engineers experienced with projects like Oroville Dam. Planned or executed capital projects have been coordinated with federal appropriations, state funding mechanisms, and stakeholder partners such as the California Department of Water Resources to ensure continued reliability for irrigation districts, urban suppliers, and ecological commitments.
Category:Central Valley Project Category:Water supply infrastructure in California