Mount Shasta, Calif. —
The State Water Resources Control Board
and the U.S. Geological Survey will present information
on Thursday, July 15 on a large-scale study of
groundwater quality they are launching in northeastern
California, a recent press release from the U.S.
Geological Survey announced. The study area will cover
Modoc County and parts of Siskiyou, Shasta, Lassen,
Tehama, Plumas, and Butte counties, and will include the
cities of Alturas, Susanville, Tulelake, Burney, Weed,
Dorris and Mount Shasta, among others.
The Water Board is collaborating with the USGS and
Lawrence Livermore National Laboratories (LLNL) to
conduct the Groundwater Ambient Monitoring and
Assessment (GAMA) Program. According to the release, the
main goals of GAMA are to improve comprehensive
statewide groundwater monitoring and to increase the
availability of information about groundwater quality to
the public.
The USGS California Water Science Center is the project
lead for the GAMA Priority Basin Project. With the
voluntary cooperation of local water agencies and well
owners, USGS is testing water in California groundwater
basins over a 10-year period.
The Cascades-Modoc study unit is one of 35 GAMA study
units across the state. It includes 55 volcanic and
sedimentary groundwater basins, as defined by the state
Department of Water Resources.
Starting July 12 and continuing for about 12 weeks, USGS
scientists will collect water-quality samples from an
estimated 90 wells. A report on the data is expected to
be available in about a year.
The GAMA Priority Basin Project is designed to
characterize water quality in groundwater basins. GAMA
does not evaluate the quality of water delivered to
consumers. After withdrawal from the ground, water for
public systems is typically treated or mixed before
consumers receive it to maintain water quality.