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Butte County reports above‑average precipitation, ongoing groundwater quality monitoring and multiple SGMA‑funded projects
Summary
County staff reported above‑average precipitation and snowpack for the water year and presented groundwater salinity monitoring results and project updates, including domestic well inventories, monitoring well installations and Palermo community water projects.
Butte County staff delivered updates Oct. 1 on hydrologic conditions, groundwater quality monitoring and county‑funded SGMA projects intended to support groundwater sustainability and drought resilience.
Kelly Peterson, the county’s research scientist, walked commissioners through water‑year conditions, noting above‑average northern Sierra precipitation and an April 1 snow water equivalent slightly above normal. Lake Oroville storage and Sacramento‑region runoff were reported at or above historical averages for the date, and county precipitation gauges in Durham and Biggs recorded above‑average totals for the water year. Peterson said the county will continue local precipitation monitoring and is seeking a new long‑term station location to replace an irrigation‑pasture gauge that is becoming inactive.
Groundwater quality monitoring: Peterson summarized the county’s groundwater salinity monitoring program, which targets deep portions of the aquifer to identify baseline and long‑term changes in electrical conductivity (EC) relevant to irrigation. The county has a 19‑site network that includes multi‑completion wells and deep sampling (some wells approach 1,000 feet). Most…
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