Publications
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Hydrogeology of Picacho Basin, south-central Arizona
The hydrogeology of Picacho Basin was studied to define the stratigraphy, basin structure, physical
and hydraulic properties of the basin sediments, and predevelopment and postdevelopment conditions of
ground-water flow as of 1985. The study area includes about 900 square miles and contains a sedimentfilled
asymmetric graben. The greatest sediment thickness occurs along the east margin of the grab
Authors
Donald R. Pool, Rob Carruth, Wesley D. Meehan
Organochlorine compounds in streambed sediment and in biological tissue from streams and their relations to land use, central Arizona
Streambed-sediment samples from 13 sites and biological-tissue samples from 11 sites in the Gila River Basin in central Arizona were analyzed for 32 organochlorine compounds in streambed sediment and 28 compounds in biological tissue during 1996 as part of the U.S. Geological Survey's National Water-Quality Assessment program. The objectives of the study were to determine the occurrence and distri
Authors
Joseph B. Gebler
Chemical characteristics of urban stormwater sediments and implications for environmental management, Maricopa County, Arizona
Investigations of the chemical characteristics of urban stormwater sediments in the rapidly growing Phoenix metropolitan area of Maricopa County, Arizona, showed that the inorganic component of these sediments generally reflects geologic background values. Some concentrations of metals were above background values, especially cadmium, copper, lead, and zinc, indicating an anthropogenic contributio
Authors
J. T. C. Parker, K. D. Fossum, T.L. Ingersoll
Method to identify wells that yield water that will be replaced by water from the Colorado River downstream from Laguna Dam in Arizona and California
Accounting for the use of Colorado River water is required by the U.S. Supreme Court decree, 1964,
Arizona v. California. Water pumped from wells on the flood plain and from certain wells on alluvial
slopes outside the flood plain is presumed to be river water and is accounted for as Colorado River water.
The accounting-surface method developed for the area upstream from Laguna Dam was modified
Authors
Sandra J. Owen-Joyce, Richard P. Wilson, Michael C. Carpenter, James B. Fink
Identifying wells downstream from Laguna Dam that yield water that will be replaced by water from the Colorado River, Arizona and California
This report summarizes a comprehensive study and development of the method documented in Owen-Joyce and others (2000). That report and one for the area upstream from Laguna Dam (Wilson and Owen-Joyce, 1994) document the accounting-surface method to identify wells that yield water that will be replaced by water from the Colorado River.
Downstream from Laguna Dam, the Colorado River is the source f
Authors
Sandra J. Owen-Joyce
Hydrogeology of the regional aquifer near Flagstaff, Arizona, 1994-97
Sandstones, siltstones, and limestones that are Pennsylvanian to Permian in age underlie the southern
part of the Colorado Plateau near Flagstaff, Arizona, and contain a complex regional aquifer that has
become increasingly important as a source of water for domestic, municipal, and recreational uses.
Ground-water flow in the regional aquifer is poorly understood in this area because (1) depth of
Authors
Donald J. Bills, Margot Truini, Marilyn E. Flynn, Herbert A. Pierce, Rufus D. Catchings, Michael J. Rymer
Ground-water quality in the upper Santa Cruz Basin, Arizona, 1998
Fifty-eight ground-water samples were collected and analyzed in 1998 by the U.S. Geological Survey
and the Arizona Department of Environmental Quality to assess ground-water quality and to identify
factors affecting ground-water quality in the Upper Santa Cruz Basin. In addition, pre-existing groundwater
quality data for six wells were analyzed to determine changes in the ground-water quality of t
Authors
Alissa Coes, Dorinda J. Gellenbeck, Douglas C. Towne, Maureen C. Freark
Ground-water, surface-water, and water-chemistry data, Black Mesa area, northeastern Arizona—1999
The N aquifer is the major source of water in the 5,400-square-mile area of Black Mesa in northeastern Arizona. Availability of water is an important issue in this area because of continued industrial and municipal use, a growing population, and a precipitation of only about 6 to 12 inches per year.
The monitoring program in Black Mesa has been operating since 1971 and is designed to determine th
Authors
Blakemore E. Thomas, Margot Truini
Ground-water, surface-water, and water-chemistry data, Black Mesa area, northeastern Arizona: 1998
The Black Mesa monitoring program is designed to document long-term effects of ground-water pumping from the N aquifer by industrial and municipal users. The N aquifer is the major source of water in the 5,400-square-mile Black Mesa area, and the ground water occurs under confined and unconfined conditions. Monitoring activities include continuous and periodic measurements of (1) ground-water pump
Authors
Margot Truini, Bradley M. Baum, Gregory R. Littin, Gayl Shingoitewa-Honanie
Land-subsidence and ground-water storage monitoring in the Tucson Active Management Area, Arizona
The Tucson Active Management Area (TAMA) comprises two basins--Tucson Basin and Avra Valley. The TAMA has been directed by Arizona ground-water law to attain an annual balance between groundwater withdrawals and recharge by the year 2025. This balance is defined by the statute as "safe yield." Current ground-water withdrawals exceed recharge, resulting in conditions of ground-water overdraft, whic
Authors
Don R. Pool, Daniel Winster, K. C. Cole
Investigation of the geology and hydrology of the Mogollon Highlands of central Arizona: a project of the Arizona Rural Watershed Initiative
The Mogollon Highlands of east central Arizona is a region of forested plateau and mountains, deep, sheerwalled canyons, and desert valleys. Known for its scenic beauty and characterized by a generally mild climate, the area, though still sparsely populated, attracts an increasing number of tourists and summer residents. Furthermore, the permanent population is expected to nearly double over the n
Authors
John T.C. Parker, Marilyn E. Flynn
Monitoring surface-water quality in Arizona: the fixed-station network
Arizona is an arid State in which economic development is influenced largely by the quantity and quality of water and the location of adequate water supplies. In 1995, surface water supplied about 58 percent of total withdrawals in Arizona. Of the total amount of surface water used in 1995, about 89 percent was for agriculture, 10 percent for public supply, and 1 percent for industrial supply (inc
Authors
Saeid Tadayon