Monday, April 11, 2016

Water wars

Modern Dust Bowl divides state into haves, have nots

Approximate location of maximum subsidence in United States identified by research efforts of Joseph Poland (pictured). Signs on pole show approximate altitude of land surface in 1925, 1955, and 1977. The pole is near benchmark S661 in the San Joaquin Valley southwest of Mendota. U.S. GEOLOGICAL SURVEY

USGS

U.S. News & World Report

The Gold Rush State has sunk more than 45 feet since 1935 — something the U.S. government calls the "largest human alteration of the earth's surface." But earthquakes aren't the cause. It's happening because of excessive groundwater mining brought on by drought, and geologists say all the rain in the world won't reverse cave-ins of dirt and rock in underground aquifers.

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DREAM recharge project draws hope and concern

Lodi News-Sentinel

In an effort to address water concerns, the North San Joaquin Water Conservation District is looking to recharge the county's declining groundwater supply with a joint project that includes the participation of East Bay Municipal Utility District.

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Toxic Gold Rush mine may be next Superfund site

Stockton Record

An old gold mine with a sad past may become the first highest-priority federal Superfund cleanup site in the central Mother Lode. The Argonaut Mine, just west of downtown Jackson, operated from the 1850s until 1942. The soil there still contains high levels of arsenic, lead and mercury, and 1 million cubic yards of that material is held back by a deteriorating century-old dam that could fail.

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