USGS: Cuyama Valley Groundwater Study Reveals Subsidence, Complex Geology, Other Challenges
From the United States Geological Survey (USGS) California Water Science Center:
“Initial findings from an ongoing study evaluating groundwater availability in the Cuyama Valley groundwater basin show continued decreases in aquifer water levels and associated land subsidence of up to 12mm annually in areas where substantial groundwater pumping occurs. Additionally, water quality throughout the Cuyama Valley is affected by natural contaminants that come in contact with aquifer-system water, such as sulfates (mineral salts containing sulfur), arsenic and trace metals, according to the cooperative study by the U.S. Geological Survey and the Santa Barbara County Water Agency. Scientists analyzed untreated groundwater, not treated tap water that may be disinfected, filtered, mixed, and/or exposed to the atmosphere before it is delivered to consumers.”
The reports include the following: “Geology, Water-Quality, Hydrology, and Geomechanical Activity of the Cuyama Valley Groundwater Basin, California, 2008–2012″ and “Construction of 3-D Geologic Framework and Textural Models for Cuyama Valley Groundwater Basin, California.” There’s also a new USGS website for Cuyama Valley studies.