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Arizona USGS Social Media

The Southwest Biological Science Center, Arizona Water Science Center, and Western Geographic Science Center have teamed up to bring you informative &...

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Uranium in Grand Canyon Region Groundwater Mostly Complies with Federal Health Standards

Nearly 95% of samples collected from 206 locations over 40 years show uranium concentrations less than the U.S. Environmental Protection Agency...

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A 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.  

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USGS Arizona Water Science Center to participate in Colorado River Low Flow event

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...

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USGS 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...

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USGS Arizona Water Science Center publishes a series of reports that describe the groundwater resources of the Hualapai Plateau and Truxton Basin

The USGS Arizona Water Science Center has published three reports documenting the findings of a comprehensive groundwater study conducted from 2015...

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USGS 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

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Levels of Possible Human Carcinogen Declining in Most Wells in Tucson International Airport Superfund Site

Levels of a potential human carcinogen, 1,4-dioxane, have mostly declined in wells in the commercial and residential areas of the Tucson International...

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Uranium in Spring Water North of Grand Canyon Likely Not Related to Nearby Mining Activity

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...

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Crossing Borders for a Secure Water Future: US-Mexico San Pedro River Aquifer Report

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...

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Water Levels Declining in Areas Along San Pedro River near Sierra Vista, Arizona

Streamflow and groundwater levels are declining in some locations along the San Pedro River near Sierra Vista, Arizona, according to a new report by...

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Groundwater Recharge in Upper Colorado River Basin May Hold Steady Under Climate Change

Future groundwater replenishment in the Upper Colorado River Basin may benefit from projected increases in future basin-wide precipitation under...

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