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Filter Total Items: 119
Measuring biomass
Date Published: April 13, 2017
Status: Active

Ecosystem Modelling and Decision Support

The Ecosystem Modelling and Decision Support Project seeks to understand how drivers of ecosystem change like wildfire, drought, and land use affected past spatial and temporal patterns of vegetation communities and wildlife. Research methods involve 1) analyzing field-collected information (e.g. long-term plot/transect data, repeat photography) on soils, vegetation, and/or wildlife with...

USGS
Date Published: April 12, 2017
Status: Active

Hydrocarbon Monitoring in Response to Personal Watercraft Regulation at Glen Canyon National Recreation Area

Polycyclic aromatic hydrocarbon (PAH) contamination related to watercraft use is one of the most significant water-quality issues affecting Lake Powell at Glen Canyon National Recreation Area (GLCA). Water quality in Lake Powell is important as the lake is a water source for public and agricultural consumption. In addition, more than 2 million people visit GLCA annually, and most of these...

USGS
Date Published: April 12, 2017
Status: Active

Identification and Analysis of Points of Diversion along the Lower Colorado River in Support of Decree Accounting

 In the United States, the Colorado River Compact of 1922 apportions the waters of the Colorado River between the upper basin States and the lower basin States (U.S. Congress, 1948, p. A17-A22). The requirement for participation of the U.S. Geological Survey (USGS) and the Bureau of Reclamation (BOR) is stated in Article V. Water in the lower Colorado River is apportioned among the States of...

USGS
Date Published: April 10, 2017
Status: Active

Spatial and Temporal Distribution of Bacterial Indicators and Microbial Source Tracking within Tumacácori National Historical Park and the Santa Cruz River Watershed

Elevated levels of bacteria have been measured by the USGS, National Park Service, Arizona Department of Environmental Quality (ADEQ), and other agencies, in the Upper Santa Cruz River, including within the reach at Tumacácori National Historical Park (TUMA).  Indicators of pathogens in the river at TUMA are at levels that are of great concern to TUMA personnel responsible for safeguarding two...

USGS
Date Published: April 10, 2017
Status: Active

Occurrence, fate, transport, and ecological effects of aerially applied herbicides in the effort to control invasive buffelgrass (Pennisetum ciliare syn. Cenchrus ciliaris) in Saguaro National Park

The Sonoran Desert lands that the Saguaro National Park (SAGU) has been tasked to protect are facing an unprecedented threat from buffelgrass (Cenhrus ciliaris), an invasive perennial grass that was added to Arizona’s noxious weed list in 2005. The buffelgrass invasion has been so pervasive that the U.S. Department of Interior issued a declaration in 2010 which highlighted a need for...

USGS
Date Published: March 29, 2017
Status: Active

C Aquifer Monitoring Program

The Bureau of Indian Affairs Navajo Regional Office (Navajo-BIA) and the U.S. Geological Survey (USGS) maintain a cooperative monitoring program with other local and State agencies for groundwater in the C Aquifer (Coconino Aquifer) in the Little Colorado River Basin. The goal of this program is to determine baseline groundwater conditions in the C Aquifer and other water-bearing zones before...

Black Mesa, Arizona
Date Published: March 15, 2017
Status: Active

Black Mesa Monitoring Program

The U.S. Geological Survey water-monitoring program in the Black Mesa area began in 1971 and provides information about the long-term effects of groundwater withdrawals from the N aquifer for industrial and municipal uses. The monitoring program includes measuring potential recovery in the N aquifer as a result of the reduction in industrial pumpage by Peabody Western Coal Company.

...

Downtown Phoenix, Arizona
Date Published: March 14, 2017
Status: Active

Maricopa County Urban Stormwater Quality

Since 1991, the U.S. Geological Survey (USGS), in cooperation with the Flood Control District of Maricopa County (FCDMC), the city of Phoenix, and the city of Glendale, has been collecting, analyzing, and interpreting urban stormwater information from selected basins throughout the metropolitan Phoenix area. Water-resource managers and policy makers have used this information to determine...

Contacts: Kenneth Fossum
USGS
Date Published: March 9, 2017
Status: Active

Air Force Plant 44

Industrial activity at Air Force Plant 44 (AFP 44), a manufacturing facility located on property owned by the U.S. Air Force and operated by a major defense contractor, resulted in extensive contamination of groundwater with the industrial solvent trichloroethylene (TCE) and other organic compounds. The sole-source regional aquifer underlying AFP 44 provides potable water for municipal,...

Agricultural lands in Arizona, thumbnail
Date Published: March 9, 2017
Status: Active

Arizona Water Use

The Arizona Water Use program collects and estimates annual water withdrawals for the categories of irrigation, municipal, mining, thermoelectric-power, and drainage uses. The data for these categories are compiled for the Arizona Department of Water Resources groundwater basins outside of Active Management Areas. 

Contacts: Saeid Tadayon
Image of a glass slide and bathythermogram - examples of data types rescued.
Date Published: February 28, 2017
Status: Active

USGS Data at Risk: Expanding Legacy Data Inventory and Preservation Strategies

As one of the largest and oldest science organizations in the world, USGS has produced more than a century of earth science data, much of which is currently unavailable to the greater scientific community due to inaccessible or obsolescent media, formats, and technology. Tapping this vast wealth of “dark data” requires 1) a complete inventory of legacy data and 2) methods and tools to...

Contacts: Lance Everette, Tara M Bell, Cristiana Falvo
Dead and dying cottonwoods along the Mojave River, California, following a decrease in the riparian water table
Date Published: January 17, 2017

Ecological Drought in Riparian Ecosystems

Drought is killing riparian trees along many rivers in the western United States. The cause can be increasing temperature or decreasing precipitation, flow or water-table elevation. At multiple locations we are relating water availability to physiological measurements of tree survival and water stress, such as ring width, carbon stable isotope ratio and branch hydraulic conductivity. These...

Filter Total Items: 126
Year Published: 1990

National water summary 1987: Hydrologic events and water supply and use

Water use in the United States, as measured by freshwater withdrawals in 1985, averaged 338,000 Mgal/d (million gallons per day), which is enough water to cover the 48 conterminous States to a depth of about 2.4 inches. Only 92,300 Mgal/d, or 27.3 percent of the water withdrawn, was consumptive use and thus lost to immediate further use; the...

Carr, Jerry E.; Chase, Edith B.; Paulson, Richard W.; Moody, David W.
Attribution: Water, Central Midwest Water Science Center, Dakota Water Science Center, , , Kansas Water Science Center, Minnesota Water Science Center, Pennsylvania Water Science Center, Texas Water Science Center, Utah Water Science Center, Wisconsin Water Science Center, Water Resources, Water Availability and Use Science Program, Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, U.S. Virgin Islands, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming, United States of America
National water summary 1987: hydrologic events and water supply and use; 1990; WSP; 2350; Carr, Jerry E.; Chase, Edith B.; Paulson, Richard W.; Moody, David W.

Year Published: 1990

Aggradation and degradation of alluvial sand deposits, 1965 to 1986, Colorado River, Grand Canyon National Park, Arizona

Alluvial sand deposits along the Colorado River in Grand Canyon National Park are used as campsites and are substrate for vegetation. The largest and most numerous of these deposits are formed in zones of recirculating current that are created downstream from where the channel is constricted by debris fans at tributary mouths. Alluvial sand...

Schmidt, John C.; Graf, Julia B.
Aggradation and degradation of alluvial sand deposits, 1965 to 1986, Colorado River, Grand Canyon National Park, Arizona; 1990; PP; 1493; Schmidt, John C.; Graf, Julia B.

Year Published: 1990

Estimates of consumptive use and ground-water return flow and the effect of rising and sustained high river stage on the method of estimation in Cibola Valley, Arizona and California, 1983 and 1984

In Cibola Valley, Arizona, water is pumped from the Colorado River to irrigate crops and to maintain wildlife habitat. Unused water percolates to the water table and, as groundwater, moves downgradient into areas of phreatophytes, into a drainage ditch, out of the flood plain, and back to the river. In 1983 and 1984, groundwater return flow was...

Owen-Joyce, Sandra J.
Estimates of consumptive use and ground-water return flow and the effect of rising and sustained high river stage on the method of estimation in Cibola Valley, Arizona and California, 1983 and 1984; 1990; WRI; 89-4194; Owen-Joyce, Sandra J.

Year Published: 1990

Estimates of ground-water flow components for Lyman Lake, Apache County, Arizona

Bills, D.J.; Hjalmarson, H.W.; Robertson, F.N.
Estimates of ground-water flow components for Lyman Lake, Apache County, Arizona; 1990; WRI; 89-4151; Bills, D. J.; Hjalmarson, H. W.; Robertson, F. N.

Year Published: 1989

Evapotranspiration estimates using remote-sensing data, Parker and Palo Verde valleys, Arizona and California

In 1981 the U.S. Geological Survey established an experimental project to assess the possible and practical use of remote-sensing data to estimate evapotranspiration as an approximation of consumptive use of water in the lower Colorado River flood plain. The project area was in Parker Valley, Arizona. The approach selected was to measure the areas...

Raymond, Lee H.; Rezin, Kelly V.
Evapotranspiration estimates using remote-sensing data, Parker and Palo Verde valleys, Arizona and California; 1989; WSP; 2334; Raymond, Lee H.; Rezin, Kelly V.

Year Published: 1989

Progress report on the ground-water, surface-water, and quality-of-water monitoring program, Black Mesa Area, northeastern Arizona; 1988-89

The Black Mesa monitoring program in Arizona is designed to determine long-term effects on the water resources of the area resulting from withdrawals of groundwater from the N aquifer by the strip-mining operation of Peabody Coal Company. Withdrawals by Peabody Coal Company increased from 95 acre-ft in 1968 to 4 ,090 acre-ft in 1988. The N aquifer...

Hart, R.J.; Sottilare, J.P.
Progress report on the ground-water, surface-water, and quality-of-water monitoring program, Black Mesa Area, northeastern Arizona; 1988-89; 1989; OFR; 89-383; Hart, R. J.; Sottilare, J. P.

Year Published: 1989

Water Resources Data for Arizona, Water Year 1987

Wilson, R.P.; Garrett, W.B.
Water Resources Data for Arizona, Water Year 1987; 1989; WDR; AZ-87-1; Wilson, R. P.; Garrett, W. B.

Year Published: 1988

Aggradation and degradation of alluvial sand deposits, 1965 to 1986, Colorado River, Grand Canyon National Park, Arizona

High discharges occurring between 1983-1985 resulted in redistribution of sand stored in zones of recirculating current in the Colorado River in Grand Canyon National Park. Redistribution resulted in net loss in the number of reattachment deposits in narrow reaches and aggradation of some separation deposits. Separation deposits were more stable...

Schmidt, J.C.; Graf, J.B.
Aggradation and degradation of alluvial sand deposits, 1965 to 1986, Colorado River, Grand Canyon National Park, Arizona; 1988; OFR; 87-555; Schmidt, J. C.; Graf, J. B.

Year Published: 1988

Aggradation and degradation of alluvial sand deposits, 1965 to 1986, Colorado River, Grand Canyon National Park, Arizona; executive summary

High discharges that occurred in 1983-85 resulted in redistribution of sand stored in zones of recirculating current in the Colorado River in Grand Canyon National Park. Redistribution resulted in net loss in the number of reattachment deposits in narrow reaches and aggradation of some separation deposits. Separation deposits were more stable than...

Schmidt, J.C.; Graf, J.B.
Aggradation and degradation of alluvial sand deposits, 1965 to 1986, Colorado River, Grand Canyon National Park, Arizona; executive summary; 1988; OFR; 87-561; Schmidt, J. C.; Graf, J. B.

Year Published: 1988

Estimates of consumptive use and ground-water return flow using water budgets in Parker Valley, Arizona and California, 1981-84

Annual water budgets were used to estimate consumptive use by vegetation and groundwater return flow in Parker Valley, Arizona and California. Consumptive use by vegetation was estimated to be 482,800 acre-ft in 1981, 432,000 acre-ft in 1982, 413,500 acre-ft in 1983, and 420,900 acre-ft in 1984 on the Arizona side of the Colorado River, and 45,400...

Owen-Joyce, Sandra J.
Estimates of consumptive use and ground-water return flow using water budgets in Parker Valley, Arizona and California, 1981-84; 1988; WRI; 88-4063; Owen-Joyce, Sandra J.

Year Published: 1988

Progress report on the ground-water, surface-water, and quality- of-water monitoring program, Black Mesa Area, northeastern Arizona; 1987-88

The Black Mesa, Arizona, monitoring program is designed to determine long-term effects on the water resources of the area resulting from withdrawals of groundwater from the N aquifer by the strip-mining operation of Peabody Coal Company. Withdrawals by Peabody Coal Company increased from 95 acre-ft in 1968 to 3 ,832 acre-ft in 1987. The N aquifer...

Hart, R.J.; Sottilare, J.P.
Progress report on the ground-water, surface-water, and quality- of-water monitoring program, Black Mesa Area, northeastern Arizona; 1987-88; 1988; OFR; 88-467; Hart, R. J.; Sottilare, J. P.

Year Published: 1988

Simulation of five ground-water withdrawal projections for the Black Mesa area, Navajo and Hopi Indian Reservations, Arizona

The N Aquifer is the main source of water in the 5,400 sq mi Black Mesa area in the Navajo and Hopi Indian Reservations in northeastern Arizona. Water in the aquifer is under confined conditions in the central 3,300 sq mi of the area. Maximum saturated thickness is about 1,050 ft. Annual groundwater withdrawals from 1972 through 1986 averaged 5,...

Brown, J.G.; Eychaner, J.H.
Simulation of five ground-water withdrawal projections for the Black Mesa area, Navajo and Hopi Indian Reservations, Arizona; 1988; WRI; 88-4000; Brown, J. G.; Eychaner, J. H.

Filter Total Items: 192
July 5, 2012

2012 Whitewater-Baldy Fire

USGS installed six early-flood-warning units—rain and stream gages—in the burned areas resulting from New Mexico's 2012 Whitewater-Baldy Fire. The gages transmit data via satellite to provide warnings to communities that may be affected by flooding.

map of historic and current sage-grouse range in 2000
May 31, 2012

map of historic and current sage-grouse range in 2000

Map of historic and current sage-grouse range in 2000, provided as a download from the old USGS Sagemap website.

October 2, 2011

Nat'l Comparison of USGS Compiled Irrigation Water Use Data

Highlights of the Scientific Investigations Report 2011-5166 which documents methods of irrigation and inventories irrigation data collected for the 2000 and 2005 U.S Geological Survey.

Valles Marineris on Mars
September 29, 2011

Valles Marineris on Mars

Mosaic of the Valles Marineris hemisphere of Mars projected into point perspective, a view similar to that which one would see from a spacecraft. The distance is 2500 kilometers from the surface of the planet, with the scale being .6km/pixel. The mosaic is composed of 102 Viking Orbiter images of Mars. The center of the scene (lat -8, long 78) shows the entire Valles

...
August 10, 2011

Post-fire Flash Flood in Coronado National Memorial, Arizona

Video footage begins with dry streambed, and within the first 10 seconds a very dark, roiling, flow comes downstream toward the viewer. The rest of the video is footage of the flow going past, and into a culvert under a bridge. The video was recorded at the U.S. Geological Survey streamgage site near the Coronado National Memorial visitor center, in southern Arizona. The

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July 29, 2011

Lake Powell: Water Quality Samples at a Specific Depth

Collection of water quality samples from specific depths for inorganic elements in Lake Powell, AZ-UT.

July 29, 2011

Lake Powell: Passive Water Quality Samples

Passive water quality samplers (semipermeable membrane devices ) are used to monitor Polycyclic Aromatic Hydrocarbons in Lake Powell, AZ-UT.

Image: Landsat Photo: Wallow Fire, Arizona
June 7, 2011

Landsat Photo: Wallow Fire, Arizona

This Landsat imagery was taken on June 7, 2011. Path/Row: 35/36 and 37 Lat/Long: 33.820/-109.330

Image: Drilling in Cinder Lake, Arizona
June 3, 2011

Drilling in Cinder Lake, Arizona

Boreholes being drilled at Cinder Lake as part of a U.S. Geological Survey study to determine the feature's floodwater storage capacity. Cinder Lake, which is located on the Coconino National Forest, has been used to store runoff from areas affected by the 2010 Schultz Fire outside of Flagstaff, Arizona.

May 5, 2011

Electronic Tape Calibration Procedure

A training video discussing how to calibrate the electronic tape.

May 5, 2011

Microgravity Measurement for Groundwater Analysis

A video discussing the Gravity Meters used at the USGS Arizona Water Science Center.

Image: Dust Storm Near Winslow, Arizona, in April 2011
April 1, 2011

Dust Storm Near Winslow, Arizona, in April 2011

Dust carried by the wind has far-reaching effects, including the loss of nutrients and water-holding capacity from landscapes, and the speeding up of the melting of snow, which affects the timing and magnitude of runoff into streams and rivers.

Filter Total Items: 177
USGS science for a changing world logo
October 21, 2011

FLAGSTAFF, Ariz. – The sand dunes among which Navajos have eked out austere livings for generations are growing fast and becoming mobile as the climate changes, says U.S. Geological Survey geologist Dr. Margaret Hiza Redsteer, whose interviews with elders and historical research augment her decade-long research on Navajo Nation land.

USGS science for a changing world logo
October 12, 2011

A dust storm that rolled across the Arizona desert on Tuesday, October 4, 2011, effectively blinded motorists, leading to a large string of motor vehicle crashes, multiple injuries, and at least one death. 

USGS science for a changing world logo
September 21, 2011

Over the last 70 years, groundwater in Arizona's alluvial basins was depleted by more than 74.5 million acre-feet, or approximately three times the maximum storage of Lake Powell. 

USGS science for a changing world logo
August 25, 2011

To help Arizona communities prepare for flooding in the aftermath of severe wildfires, the U.S. Geological Survey has installed new stream gages as part of early flood-warning systems and developed maps to identify areas at possible risk of debris flows.

USGS science for a changing world logo
June 17, 2011

As the largest fire in the history of the state of Arizona continues to burn, emergency managers and responders are using satellite data from a variety of instruments to plan both immediate firefighting containment strategies and mitigation efforts once the fires are out.

USGS science for a changing world logo
June 9, 2011

The second largest fire in Arizona history, the Wallow Fire is graphically depicted by this Landsat image, taken June 7, which shows burning in the mountains of eastern Arizona near the border with New Mexico.

USGS science for a changing world logo
May 13, 2011

Recent Landsat satellite data captured by the U.S. Geological Survey and NASA on May 10 show the major flooding of the Mississippi River around Memphis, Tenn. and along the state borders of Tennessee, Kentucky, Missouri, and Arkansas as seen from 438 miles above the Earth.

USGS science for a changing world logo
April 12, 2011

A new groundwater model of the interconnected aquifers in central and northern Arizona was released today by the U.S. Geological Survey, following a multi-year development effort that involved the Arizona Department of Water Resources and regional cooperators.

USGS science for a changing world logo
February 15, 2011

Forests should be managed according to their respective, specific fire ecology — not whole-scale fire suppression or one-size-fits-all plans — to optimize forest growth and stabilize carbon storage.

USGS science for a changing world logo
February 15, 2011

Forests should be managed according to their respective, specific fire ecology — not whole-scale fire suppression or one-size-fits-all plans — to optimize forest growth and stabilize carbon storage.

USGS
December 12, 2010

The U.S. Geological Survey (USGS) is celebrating the success of three distinguished researchers who are recipients of the Presidential Early Career Award for Scientists and Engineers (PECASE). This award is the highest recognition granted by the United States government to scientists and engineers in the early stages of their research careers.

USGS
December 2, 2010

TUCSON, Ariz. -- A new book on the methods and applications of repeat photography that showcases its international usage in monitoring landscape change on five continents has been released.