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Metropolitan Water District outlines Bolden/Bridal Island sensor pilot, meters and costs to refine net channel depletion
Summary
Metropolitan Water District described a water‑balance pilot deploying low‑density sensors and additional discharge meters on islands, aiming to quantify net channel depletion and inform modeling; presenters noted capital and annual maintenance cost ranges and emphasized meters plus multiple evidence lines for validation.
Metropolitan Water District (MWD) staff reported progress on a water‑balance pilot on Bolden/Bridal Island designed to improve estimates of net channel depletion and agricultural net use in the Delta.
Pilot goals and instrumentation
Russ Ryan, program manager at MWD, said the project’s first phase uses low‑density sensors at five locations and will add discharge meters on major pump stations to provide direct flow measurements. He described the program as a way to assemble the inputs and outputs that feed a water‑balance model — siphons, seepage, pump discharges, ET and…
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