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Douglas County delays USGS groundwater report, votes to extend contract to June 2027
Summary
After a USGS presentation on a Carson Valley groundwater model showing mostly small valley‑wide declines but localized drops near Gardnerville Ranchos, commissioners approved a no‑cost extension to June 30, 2027 to complete peer review and finish the report.
The Douglas County Board of County Commissioners on March 19 heard final results from a U.S. Geological Survey model of Carson Valley groundwater and approved a time extension through June 30, 2027 to allow the USGS to complete a peer review and publish the final report.
USGS hydrologist Chris Garner presented two model runs: a baseline holding 2020 pumping constant and a scenario that applies municipal pumping projections provided by the valley’s five purveyors. Garner said the scenario produces a slow decline in streamflow at the Carson City gauge and local declines in groundwater elevation. “If you take the last bar there, it’s approximately 75 acre‑feet for water year 2050,” Garner said, adding that converts to “0.1 CFS” compared with an average annual flow near 400 CFS at that gauge.
Garn…
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