U. S. Groundwater Salinity More Prevalent Than Previously Thought...

New Estimate Finds Less Fresh Groundwater In U. S. Than Previously Assumed
(Brett WALTON, Circle of Blue; December 13, 2018)
https://www.circleofblue.org/2018/world/new-estimate-finds-less-fresh-groundwater-in-u-s-than-previously-assumed/


Featured Research Article:


Competition for shrinking window of low salinity groundwater
(FERGUSON et al., 2018)
http://iopscience.iop.org/article/10.1088/1748-9326/aae6d8/meta


Also...


Preliminary Groundwater Salinity Mapping Near Selected Oil Fields Using Historical Water Sampling Data, Central and Southern California
(METZGER and LANDON, 2018)
https://pubs.usgs.gov/sir/2018/5082/sir20185082_.pdf

Water and petroleum well data used for preliminary regional groundwater salinity mapping near selected oil fields in central and southern California 
(Supplemental Material for METZER and LANDON; July 24, 2018)
https://www.sciencebase.gov/catalog/item/5a735aaee4b0a9a2e9e1429d


Brackish Groundwater in the United States
(STANTON et al., 2017)
https://pubs.usgs.gov/pp/1833/pp1833.pdf

Geochemical Database for the Brackish Groundwater Assessment of the United States
(QI and HARRIS, 2017)
https://www.sciencebase.gov/catalog/item/583dfd9ee4b088b77f520d07



Map:  


Observed Minimum Depth to Brackish Water in the United States and Selected U. S. Territories
(Figure 10 - Page 37; STANTON et al, 2017)
https://pubs.usgs.gov/pp/1833/pp1833_fig10_lg.pdf


Website:


USGS Groundwater Data
https://water.usgs.gov/ogw/data.html


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