Shimmick Corporation announced on July 22, 2025, that it has been awarded a $51 million contract by the Stockton East Water District (SEWD) for the Bellota Weir Modifications project in Stockton, California. This project is a key component of SEWD’s long-term strategy to improve water reliability and enhance fish habitat on the Calaveras River.
The project's scope includes the construction of a new inflatable Obermeyer gate weir across Mormon Slough, a surface water intake with cylindrical fish screens, and a vertical slot fish ladder featuring lamprey ramps. It also involves a gravity flow conveyance system comprising multiple 54-inch pipelines, a fish exclusion embankment, and a low-permeability cutoff wall in the Old Calaveras River.
Additional site improvements are designed to support groundwater recharge, water quality, and ecological restoration in the region. Construction is expected to commence in 2025, following the completion of final permitting and preconstruction activities. CEO Ural Yal emphasized that the project exemplifies how infrastructure can serve both people and the environment by combining advanced water conveyance with ecological safeguards.
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