Groundwater Recharge in Upper Colorado River Basin May Hold Steady Under...
Future groundwater replenishment in the Upper Colorado River Basin may benefit from projected increases in future basin-wide precipitation under current climate projections, according to a recent study...
View ArticleWater Levels Declining in Areas Along San Pedro River near Sierra Vista,...
Streamflow and groundwater levels are declining in some locations along the San Pedro River near Sierra Vista, Arizona, according to a new report by the U.S. Geological Survey.
View ArticleCrossing Borders for a Secure Water Future: US-Mexico San Pedro River Aquifer...
For the first time, information about the San Pedro River Aquifer is now available from both the U.S. and Mexico in a new, collaborative report issued from the International Boundary and Water...
View ArticleUranium in Spring Water North of Grand Canyon Likely Not Related to Nearby...
Uranium levels in Pigeon Spring, just north of the Grand Canyon, are likely due to a natural source of uranium and not related to the nearby former Pigeon Mine, according to a recent study by the U.S....
View ArticleLevels of Possible Human Carcinogen Declining in Most Wells in Tucson...
Levels of a potential human carcinogen, 1,4-dioxane, have mostly declined in wells in the commercial and residential areas of the Tucson International Airport Area Superfund Site during 2002-2017,...
View ArticleUSGS Prepares to Measure Flooding Across Arizona
Reporters: Do you want to accompany a USGS field crew as they measure flooding? Please contact Jennifer LaVista or Jim Leenhouts
View ArticleUSGS Arizona Water Science Center publishes a series of reports that describe...
The USGS Arizona Water Science Center has published three reports documenting the findings of a comprehensive groundwater study conducted from 2015 through 2018 on the Hualapai Indian Reservation and...
View ArticleUSGS Unveils Mobile Flood Tool for the Nation
The U.S. Geological Survey announced Friday the completion of a new mobile tool that provides real-time information on water levels, weather and flood forecasts all in one place on a computer,...
View ArticleUSGS Arizona Water Science Center to participate in Colorado River Low Flow...
Is there really more water at the USGS Lees Ferry gaging station than Glen Canyon Dam is releasing just a few miles upstream? That question is probably a lot more important than you might think.
View ArticleA Century of Watching the Colorado River
Right where the Colorado River flows into the mouth of the Grand Canyon, an inconspicuous 20-foot-high concrete tower rises from the riverbank.
View ArticleUranium in Grand Canyon Region Groundwater Mostly Complies with Federal...
Nearly 95% of samples collected from 206 locations over 40 years show uranium concentrations less than the U.S. Environmental Protection Agency Maximum Contaminant Level for drinking water, according...
View ArticleArizona USGS Social Media
The Southwest Biological Science Center, Arizona Water Science Center, and Western Geographic Science Center have teamed up to bring you informative & interesting news about USGS science &...
View ArticleNew Online Maps for Exploring Groundwater Levels in Arizona
“Groundwater is a critical water resource in Arizona, and mostly invisible” said Fred Tillman, USGS research hydrologist and lead author of the study. “The AGEx maps allow people to visually explore...
View ArticleElevated Arsenic in Grand Canyon Region Groundwater Sites Likely from Natural...
About 12% of 230 groundwater sites sampled in the Grand Canyon region over 45 years show arsenic concentrations greater than the U.S. Environmental Protection Agency Maximum Contaminant Level for...
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