Arizona Water Science Center

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Welcome to the U.S. Geological Survey Arizona Water Science Center.  Our mission is to collect and interpret high quality, impartial scientific information to provide resource managers and the public with the knowledge required to understand and manage the critical water resources of Arizona and the Southwest.

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National Water Dashboard

National Water Dashboard

National Water Dashboard - Arizona

Explore real-time streamflow, groundwater, and water-quality conditions in Arizona and across the nation.

Current Conditions

Featured Science

Featured Science

Is there really more water at the USGS Colorado River at Lees Ferry gaging station than Glen Canyon Dam is releasing just a few miles upstream?  A "Spring Disturbance Flow" from Glen Canyon Dam could help answer that question.

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News

Date published: March 10, 2021

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 probably a lot more important than you might think.

 

Date published: May 4, 2020

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 through 2018 on the Hualapai Indian Reservation and adjacent areas from 2015 through 2018 in cooperation with the Bureau of Reclamation. 

Publications

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Year Published: 2021

Groundwater conditions and trends, 2009–19, Saipan, Commonwealth of the Northern Mariana Islands

Groundwater is the primary source of municipal water for Saipan. Nearly all groundwater for the municipal water supply is withdrawn from a freshwater-lens system with a limited amount of freshwater that is susceptible to saltwater intrusion. The status of Saipan’s groundwater resources has not been thoroughly assessed since 2003. The U.S....

Mitchell, Jackson N.; Presley, Todd K.; Carruth, Robert L.
Mitchell, J.N., Presley, T.K., and Carruth, R.L., 2021, Groundwater conditions and trends, 2009–19, Saipan, Commonwealth of the Northern Mariana Islands: U.S. Geological Survey Scientific Investigations Report 2020–5129, 51 p., https://doi.org/10.3133/sir20205129.

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Year Published: 2021

Groundwater, surface-water, and water-chemistry data, Black Mesa area, northeastern Arizona—2016–2018

The Navajo (N) aquifer is the primary source of groundwater in the 5,400-square-mile Black Mesa area in northeastern Arizona. Availability of water is an important issue in the Black Mesa area because of continued water requirements for industrial and municipal use by a growing population and because of its arid climate. Precipitation in the area...

Mason, Jon P.
Mason, J.P., 2021, Groundwater, surface-water, and water-chemistry data, Black Mesa area, northeastern Arizona—2016–2018: U.S. Geological Survey Open-File Report 2021–1124, 50 p., https://doi.org/10.3133/ofr20211124.

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Year Published: 2021

Procedures for field data collection, processing, quality assurance and quality control, and archiving of relative- and absolute-gravity surveys

Repeat microgravity surveys carried out using relative- and absolute-gravity meters are useful for identifying changes in subsurface mass, such as the volume of water stored in an aquifer. These surveys require careful field procedures to achieve the part-per-billion accuracy required to measure the small changes in gravity relevant for hydrologic...

Kennedy, Jeffrey R.; Pool, Donald R.; Carruth, Robert L.
Kennedy, J.R., Pool, D.R., and Carruth, R.L., 2021, Procedures for field data collection, processing, quality assurance and quality control, and archiving of relative- and absolute-gravity surveys: U.S. Geological Survey Techniques and Methods, book 2, chap. D4, 50 p., https://doi.org/10.3133/tm2D4.