Arizona Water Science Center

Elevated Arsenic in Grand Canyon Region Groundwater Sites Likely from Natural Sources

plaustsen@usgs.gov — Wed, 14 Jun 2023 14:00:00 EDT

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 drinking water, according to a new U.S. Geological Survey report.

New Online Maps for Exploring Groundwater Levels in Arizona

plaustsen@usgs.gov — Wed, 17 May 2023 08:00:15 EDT

“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 groundwater levels in their areas of interest in the state, rather than deciphering information from databases.”

Arizona USGS Social Media

mhartwell@usgs.gov — Sun, 10 Apr 2022 16:25:09 EDT

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 & related activities in the southwest U.S. — and (if we say so ourselves) often beautiful imagery associated with our science on the @USGSAZ Twitter account.

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

plaustsen@usgs.gov — Tue, 16 Nov 2021 10:02:16 EST

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 to a new U.S. Geological Survey report.

A Century of Watching the Colorado River

egoldbaum@usgs.gov — Wed, 22 Sep 2021 02:30:00 EDT

Right where the Colorado River flows into the mouth of the Grand Canyon, an inconspicuous 20-foot-high concrete tower rises from the riverbank.

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

meflynn@usgs.gov — Wed, 10 Mar 2021 07:15:00 EST

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.

USGS Unveils Mobile Flood Tool for the Nation

jlavista@usgs.gov — Fri, 30 Oct 2020 08:00:00 EDT

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, smartphone or other mobile device.

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

meflynn@usgs.gov — Mon, 4 May 2020 04:00:00 EDT

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 adjacent areas from 2015 through 2018 in cooperation with the Bureau of Reclamation.

USGS Prepares to Measure Flooding Across Arizona

jlavista@usgs.gov — Tue, 2 Oct 2018 11:00:00 EDT

Reporters: Do you want to accompany a USGS field crew as they measure flooding? Please contact Jennifer LaVista or Jim Leenhouts

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

jlavista@usgs.gov — Wed, 27 Sep 2017 06:00:00 EDT

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, according to a new map published by the U.S. Geological Survey.

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

jlavista@usgs.gov — Tue, 24 Jan 2017 05:00:00 EST

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. Geological Survey.

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

jlavista@usgs.gov — Tue, 20 Dec 2016 14:00:00 EST

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 Commission, the Mexican National Water Commission, the U.S. Geological Survey and the Universities of Arizona and Sonora.

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

jlavista@usgs.gov — Thu, 18 Aug 2016 10:15:00 EDT

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.

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

jlavista@usgs.gov — Mon, 15 Aug 2016 04:00:00 EDT

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 by the U.S. Geological Survey and Bureau of Reclamation.