Arizona Water Science Center

Publications

Filter Total Items: 312
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Year Published: 2019

Aquifer storage change and storage properties, 2010–2017, in the Big Chino Subbasin, Yavapai County, Arizona

The Big Chino Subbasin is a groundwater basin that includes the Verde River headwaters in Yavapai County in north-central Arizona. Groundwater in the southern part of the subbasin is found primarily in the Big Chino and Williamson Valleys. The former is a potential municipal water source for growing communities in Yavapai County, particularly...

Kennedy, Jeffrey R.; Kahler, Libby M.; Read, Amy M.
Kennedy, J.R., Kahler, L.M., and Read, A.L., 2019, Aquifer storage change and storage properties, 2010–2017, in the Big Chino Subbasin, Yavapai County, Arizona: U.S. Geological Survey Scientific Investigations Report 2019–5060, 39 p., https://doi.org/10.3133/sir20195060.

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Year Published: 2019

Investigation of recent decadal-scale cyclical fluctuations in salinity in the lower Colorado river

Beginning in the late 1970s, 10- to 15-year cyclical oscillations in salinity were observed at lower Colorado River monitoring sites, moving upstream from the international border with Mexico, above Imperial Dam, below Hoover Dam, and at Lees Ferry. The cause of these cyclical trends in salinity was unknown. These salinity cycles...

Tillman, Fred; Coes, Alissa L.; Anning, David W.; Mason, Jon P.; Coplen, Tyler B.

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Year Published: 2019

Conceptualizing ecological responses to dam removal: If you remove it, what's to come?

One of the desired outcomes of dam decommissioning and removal is the recovery of aquatic and riparian ecosystems. To investigate this common objective, we synthesized information from empirical studies and ecological theory into conceptual models that depict key physical and biological links driving ecological responses to removing dams. We...

Bellmore, J. Ryan; Pess, George R.; Duda, Jeffrey J.; O'Connor, Jim E.; East, Amy E.; Foley, Melissa M.; Wilcox, Andrew C.; Major, Jon J.; Shafroth, Patrick B.; Morley, Sarah A.; Magirl, Christopher S.; Anderson, Chauncey W.; Evans, James E.; Torgersen, Christian E.; Craig, Laura S.

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Year Published: 2018

Groundwater, surface-water, and water-chemistry data, Black Mesa area, northeastern Arizona—2015–2016

The Navajo (N) aquifer is an extensive aquifer and 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 the arid climate....

Mason, Jon P.; Macy, Jamie P.
Mason, J.P., and Macy, J.P., 2018, Groundwater, surface-water, and water-chemistry data, Black Mesa area, northeastern Arizona—2015–2016: U.S. Geological Survey Open-File Report 2018–1193, 60 p., https://doi.org/10.3133/ofr20181193.

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Year Published: 2018

Filtering of cyclic period infiltration in a layered vadose zone: 1. Approximation of damping and time lags

Infiltration and downward percolation of water in the vadose zone are important processes that can define the availability of water resources. We present an approach that provides insight into how periodic infiltration forcings at the land surface filter in a layered vadose zone in terms of changes in the timing and magnitude of hydrologic...

Dickinson, Jesse E.; Ferre, T.P.A

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Year Published: 2018

Groundwater-storage change and land-surface elevation change in Tucson Basin and Avra Valley, south-central Arizona--2003-2016

The U.S. Geological Survey monitors groundwater-storage change and land-surface elevation change caused by groundwater withdrawal in Tucson Basin and Avra Valley—the two most populated alluvial basins within the Tucson Active Management Area. The Tucson Active Management Area is one of five active management areas in Arizona established by the...

Carruth, Robert L.; Kahler, Libby M.; Conway, Brian D.
Carruth, R.L., Kahler, L.M., and Conway, B.D., 2018, Groundwater-storage change and land-surface elevation change in Tucson Basin and Avra Valley, south-central Arizona—2003–2016: U.S. Geological Survey Scientific Investigations Report 2018–5154, 34 p., https://doi.org/10.3133/sir20185154.

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Year Published: 2018

Filtering of periodic infiltration in a layered vadose zone: 2. Applications and a freeware screening tool

We have developed a screening tool to visualize and conceptualize the filtering properties of a layered vadose zone. Climate projections indicate that rainfall timing and magnitude may change and impact groundwater resources. This increases the importance of understanding how the vadose zone filters infiltration variability and ultimately affects...

Dickinson, Jesse E.; Ferre, T.P.A

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Year Published: 2018

Findings and lessons learned from the assessment of the Mexico-United States transboundary San Pedro and Santa Cruz aquifers: The utility of social science in applied hydrologic research

Study RegionThis study region encompasses the Transboundary San Pedro and Santa Cruz aquifers which are shared between the states of Sonora (Mexico) and Arizona (US). Special regional considerations include a semi-arid climate, basin-fill aquifers with predominantly montane recharge areas, economic drivers in the mining, trade, and military...

Callegary, James B.; Megdal, Sharon B.; Tapia Villaseñor, Elia María; Petersen-Perlman, Jacob D.; Minjárez Sosa, Ismael; Monreal, R.; Gray, F.; Grijalva Noriega, Francisco

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Year Published: 2018

Assessment of environmental flows in the middle Verde River watershed, Arizona

This report summarizes analyses of middle Verde River watershed environmental flows detailed in U.S. Geological Survey Scientific Investigations Report 2017-5100, “Preliminary synthesis and assessment of environmental flows in the middle Verde River watershed, Arizona," by N.V. Paretti, A.M.D. Brasher, S.L. Pearlstein, D.M. Skow, B. Gungle, and B....

Gungle, Bruce W.; Paretti, Nicholas V.
Gungle, B., and Paretti, N.V., 2018, Assessment of environmental flows in the middle Verde River watershed, Arizona: U.S. Geological Survey Fact Sheet 2018-3062, 6 p., https://doi.org/10.3133/fs20183062.

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Year Published: 2018

Changes in Earth’s gravity reveal changes in groundwater storage

Changes in the amount of water stored in underground aquifers cause small changes in Earth’s gravitational field. The U.S. Geological Survey’s Southwest Gravity Program has developed methods for measuring terrestrial gravity changes with part-per-billion precision. The measurements allow scientists to map changes in groundwater storage and to...

Kennedy, Jeffrey R.
Kennedy, J.R., 2018, Changes in Earth’s gravity reveal changes in groundwater storage: U.S. Geological Survey Fact Sheet 2018–3032, 4 p., https://doi.org/10.3133/fs20183032.

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Year Published: 2018

Conceptual and numerical models of dissolved solids in the Colorado River, Hoover Dam to Imperial Dam, and Parker Dam to Imperial Dam, Arizona, California, and Nevada

Conceptual and numerical models were developed to understand and simulate monthly flow-weighted dissolved-solids concentrations in the Colorado River at Imperial Dam. The ability to simulate dissolved-solids concentrations at this location will help the Bureau of Reclamation satisfy the binational agreement on the volume and salinity of Colorado...

Anning, David W.; Coes, Alissa L.; Mason, Jon P.
Anning, D.W., Coes, A.L., and Mason, J.P., 2018, Conceptual and numerical models of dissolved solids in the Colorado River, Hoover Dam to Imperial Dam, and Parker Dam to Imperial Dam, Arizona, California, and Nevada: U.S. Geological Survey Scientific Investigations Report 2018–5108, 34 p., https://doi.org/10.3133/sir20185108.

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Year Published: 2018

Effect of spatial and temporal scale on simulated groundwater recharge investigations

Hydrologic model input datasets such as climate, land use, elevation, soil, and geology information are available in a range of scales for use in water resources investigations. Smaller spatial and temporal scale input data allow groundwater recharge models to simulate more physically realistic processes and presumably result in more accurate...

Tillman, Fred; Pruitt, Tom; Gangopadhyay, Subhrendu
Tillman, F.D, Pruitt, T., and Gangopadhyay, S., 2018, Effect of spatial and temporal scale on simulated groundwater recharge investigations: Advances in Water Resources, 119, p. 257-270