National Water-Quality Assessment Program
San Joaquin - Tulare Basins NAWQA
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National Water-Quality Assessment Program San Joaquin - Tulare Basins NAWQA |
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What is NAWQA? Study Unit Description Cycle I Surface Water Aquatic Ecology Ground Water Cycle II Surface Water Aquatic Ecology Ground Water Topical Studies including video clips of sampling NAWQA Personnel Liaison Committee Presentations Publications Related Studies Related Links: |
In
1991 the U.S. Geological Survey initiated the National Water-Quality Assessment
(NAWQA) Program. The long term goals
of this program are to assess the status of and trends in the quality of
freshwater streams and aquifers, and to provide a sound understanding of
the natural and human factors that affect the quality of these resources.
As part of the program, investigations are conducted within "study units"
throughout the Nation to provide a framework for national and regional
water-quality assessment.
The San Joaquin-Tulare Basins (SANJ) study unit, located in central California, was a part of the first decadal cycle of the program investigations. The SANJ intensively investigated the quality of water resources in the study unit in order to establish existing water quality conditions of streams and aquifers. A summary of the first cycle findings can be found in Dubrovsky and others (1998).
Beginning in October 2001,
and continuing for a period of 4 years, the NAWQA Program will again intensively
investigate the quality of water resources in the San Joaquin-Tulare Basins,
as part of the second decadal cycle of the program. While the long term
goals remain the same, the emphasis of these renewed investigations will
shift from status of water quality to trends in water quality and understanding
of natural and anthropogenic factors affecting water quality. These activities
are described in Gronberg
and others (2004).
If you have questions and comments related to the San Joaquin-Tulare Basins NAWQA study, contact: Charles R. Kratzer (ckratzer@usgs.gov) or write:
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