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Filter Total Items: 133
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...

An infographic summarizing activities of the RAMPS program.
Date Published: December 9, 2016
Status: Active

RAMPS: Restoration Assessment & Monitoring Program for the Southwest

The Restoration Assessment and Monitoring Program for the Southwest (RAMPS) seeks to assist U.S. Department of the Interior (DOI) and other land management agencies in developing successful techniques for improving land condition in dryland ecosystems of the southwestern United States. Invasion by non-native species, wildfire, drought, and other disturbances are growing...

Erosion along the Rio Puerco during the flood of 2006 following herbicide application to control saltcedar in 2003.
Date Published: December 3, 2016
Status: Active

Erosion and Invasive Saltcedar

Formation of arroyos in the late 1800s greatly increased erosion across the southwestern United States. Since the 1930s, however, this erosion has decreased, partly because of bank stabilization by introduced saltcedar. With Isleta Pueblo Indian Nation, the Aquatic Systems Branch developed a new sediment dating method using saltcedar tree rings. We applied the method in a landmark study of...

Vegetation along the Colorado River in the Grand Canyon
Date Published: December 1, 2016
Status: Active

Riparian Ecology

Riparian ecologists in the AS Branch study interactions among flow, channel change, and vegetation along rivers across the western United States and worldwide. Our work focuses on issues relevant to the management of water and public lands, including dam operation, climate change, invasive species, and ecological restoration. Investigations take place on a range of scales. For example,...

The South Platte River. USGS Water Science Center image.
Date Published: November 29, 2016

Science to Inform Riparian Ecosystem Restoration and Management

Throughout the world, riparian habitats have been dramatically modified from their natural condition. Dams, non-native species and climate change are often principal drivers of these changes, via their alteration of water and sediment regimes that determine key resources for riparian plants.

The Bill Williams River in Arizona. USGS photo.
Date Published: November 29, 2016

Large-scale streamflow experiments

Because the underlying cause of riparian system alteration is often attributed to the effects of dams on flow regime, managing flow releases, particularly high flows, from dams is an often-advocated approach to river and riparian restoration. Our work has focused on understanding effects of managed high flow releases (a.k.a., pulse flows, controlled floods) from dams along rivers in the lower...

Extensive defoliation of tamarisk (orange/brown vegetation throughout mid-ground) along the Virgin River, Arizona, 2009.
Date Published: November 28, 2016
Status: Active

Biological Invasions of Riparian Ecosystems

Beginning in the early twentieth century, non-native trees and shrubs, including tamarisk (also commonly known as saltcedar) and Russian-olive, were introduced to the United States for use as ornamental plants and in erosion-control plantings. These plants spread extensively, becoming the third and fourth most frequently occurring woody riparian plants in the American West.

 

The unregulated Santa Maria River in west-central Arizona.
Date Published: November 28, 2016

Streamflow-fluvial Geomorphology-riparian Vegetation Interactions

The foundation for applying science to river and riparian restoration contexts lies in a basic understanding of the factors that drive riparian vegetation dynamics. Much of our research is focused on clarifying relationships between streamflow, fluvial geomorphology, and riparian vegetation, including various feedbacks.

This is a picture of a Grasshopper sparrow nest
Date Published: November 21, 2016

Status and Breeding Ecology of the Arizona Grasshopper Sparrow

The Arizona Grasshopper Sparrow (Ammodramus savannarum ammolegus) is a disjunct race that breeds in desert grasslands of southeastern Arizona, extreme southwestern New Mexico, and adjacent parts of northern Sonora and Chihuahua, Mexico.

Nambe grasslands, New Mexico.
Date Published: September 23, 2016
Status: Active

The New Mexico Landscapes Field Station

The New Mexico Landscapes Field Station is a place-based, globally-connected, ecological research group that studies and interprets ecosystem and wildlife dynamics, working with land managers and community leaders to deliver solutions that foster the linked health of human and natural systems.

Our partnerships, and co-location, with land management agencies provide us with opportunities...

A bat with White-nose syndrome hanging in a cave. Photo by USFWS.
Date Published: September 21, 2016
Status: Active

External Microbiota of Bats as Potential Bio-control Against Wildlife Diseases

White-nose syndrome (WNS) and/or Pseudogymnoascus destructans (P.d.), the causal agent, has spread westward across 26 states and 5 provinces within the eastern United States and Canada, respectively, over a short period of time. Since its discovery there has been a search to stop the spread of this disease that has killed millions of hibernating bats in its wake. Recent collaborative work by...

Filter Total Items: 126
Publication Thumbnail
Year Published: 1983

Geohydrology and effects of water use in the Black Mesa area, Navajo and Hopi Indian Reservations, Arizona

The N aquifer is the main source of water in the 5,400-square-mile Black Mesa area in the Navajo and Hopi Indian Reservations in northeastern Arizona. The N aquifer consists of the Navajo Sandstone and parts of the underlying Kayenta Formation and Wingate Sandstone of Jurassic and Triassic age. Maximum saturated thickness of the aquifer is about 1...

Eychaner, James H.
Geohydrology and effects of water use in the Black Mesa area, Navajo and Hopi Indian Reservations, Arizona; 1983; WSP; 2201; Eychaner, James H.

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Year Published: 1982

Annual summary of ground-water conditions in Arizona, Spring 1981 to Spring 1982

The withdrawal of ground water was about 5.4 million acre-feet in Arizona in 1981, which is about 800,000 acre-feet more than the amount withdrawn in 1980. Most of the increase in 1981 was in the amount of ground water used for irrigation in the Basin and Range lowlands province. Through 1981, slightly more than 189 million acre-feet of ground...

Annual summary of ground-water conditions in Arizona, Spring 1981 to Spring 1982; 1982; OFR; 82-1009; Geological Survey (U.S.)

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Year Published: 1982

Shallow subsurface temperatures and some estimates of heat flow from the Colorado Plateau of northeastern Arizona

Temperature data to depths of a few hundred meters were obtained from 29 wells in northeastern Arizona; 12 in the region surrounding the San Francisco Volcanic Field, 8 in the Black Mesa area, and 9 in the south-central Colorado Plateau which includes the White Mountains. Although there was evidence for local hydrologic disturbances in many...

Sass, J.H.; Stone, Claudia; Bills, D.J.
Shallow subsurface temperatures and some estimates of heat flow from the Colorado Plateau of northeastern Arizona; 1982; OFR; 82-994; Sass, J. H.; Stone, Claudia; Bills, D. J.

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Year Published: 1981

Annual summary of ground-water conditions in Arizona, spring 1979 to spring 1980

Withdrawal of ground water, about 4.0 million acre-feet in Arizona in 1979, is about 200,000 acre-feet less than the amount withdrawn in 1978. The withdrawals in 1978 and 1979 are the smallest since the mid-1950 's except in 1966. Nearly all the decrease was in the amount of ground water used for irrigation in the Basin and Range lowlands province...

Annual summary of ground-water conditions in Arizona, spring 1979 to spring 1980; 1981; OFR; 81-906; Geological Survey (U.S.)

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Year Published: 1981

Geohydrology and effects of water use in the Black Mesa area, Navajo and Hopi Indian Reservations, Arizona

The main source of water in the 5,400-square-mile Black Mesa area is the N aquifer, which consists of the Navajo Sandstone and underlying Kayenta Formation and Wingate Sandstone. Water is under confined conditions in the central 3,300 square miles. Transmissivity is less than 1,000 feet squared per day. Storage coefficient is less than 0.0004 in...

Eychaner, James H.
Geohydrology and effects of water use in the Black Mesa area, Navajo and Hopi Indian Reservations, Arizona; 1981; OFR; 81-911; Eychaner, James H.

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Year Published: 1981

Maps Showing Ground-Water Conditions in the San Francisco Peaks Area, Coconino County, Arizona - 1979

INTRODUCTION The San Francisco Peaks area includes about 2,300 mi2, of which about 500 mi2 is in the Navajo Indian Reservation, in north-central Arizona. Ground-water development has been slight except for the public-supply wells for Flagstaff and domestic wells in Fort Valley, Pitman Valley, and the area west of Elden Mountain. The public...

Appel, Cynthia L.; Bills, Donald J.
Maps Showing Ground-Water Conditions in the San Francisco Peaks Area, Coconino County, Arizona - 1979; 1981; OFR; 81-914; Appel, Cynthia L.; Bills, Donald J.

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Year Published: 1980

Annual summary of ground-water conditions in Arizona, spring 1978 to spring 1979

In 1978 the withdrawal of ground water was about 4.2 million acre-feet in Arizona, and slightly more than 3.4 million acre-feet of ground water was used for the irrigation of crops. The amount of ground water withdrawn in 1978 decreased more than 1.2 million acre-feet from the amount withdrawn in 1977 and is the smallest amount withdrawn since the...

Annual summary of ground-water conditions in Arizona, spring 1978 to spring 1979; 1980; OFR; 80-330; Geological Survey (U.S.)

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Year Published: 1980

Map showing ground-water conditions in the Canyon Diablo area, Coconino and Navajo Counties, Arizona - 1979

The Canyon Diablo area includes about 1,400 square miles in northeastern Arizona. The main source of ground water is the Coconino aquifer, which includes the Kaibab Limestone, the Cononino Sandstone, and the upper member of the Supai Formation. In places the alluvium and volcanic rocks yield water to wells and springs. Information on the map...

Appel, Cynthia L.; Bills, Donald J.
Map showing ground-water conditions in the Canyon Diablo area, Coconino and Navajo Counties, Arizona - 1979; 1980; OFR; 80-747; Appel, Cynthia L.; Bills, Donald J.

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Year Published: 1978

Annual summary of ground-water conditions in Arizona, spring 1977 to spring 1978

The withdrawal of ground water was about 5.5 million acre-feet in Arizona in 1977. About 4.7 million acre-feet of ground water was used for the irrigation of crops in 1977. The Salt River Valley and the lower Santa Cruz basin are the largest agricultural areas in the State. For 1973-77, ground-water withdrawal in the two areas was about 8.1 and 5....

Annual summary of ground-water conditions in Arizona, spring 1977 to spring 1978; 1978; WRI; 78-144; Geological Survey (U.S.)

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Year Published: 1978

Progress report on Black Mesa monitoring program; 1977

Monitoring of coal mine operations on Black Mesa, Ariz., was started in 1971 to determine the effects of strip mining on water resources in the area. Monitoring on and near the mesa includes measurements of ground-water levels and quality and quantity, sediment concentration, and chemical quality of surface water. The surface-water monitoring...

Progress report on Black Mesa monitoring program; 1977; 1978; OFR; 78-459; Geological Survey (U.S.)

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Year Published: 1977

Analog simulation of the ground-water system, Yuma, Arizona

Patten, E.P.
Analog simulation of the ground-water system, Yuma, Arizona; 1977; PP; 486-I; USGS NUMBERED SERIES; Water resources of Lower Colorado River-Salton Sea area; Patten, E. P., Jr.

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Year Published: 1977

Annual summary of ground-water conditions in Arizona, spring 1975 to spring 1976

Two small-scale maps of Arizona show (1) pumpage of ground water by areas and (2) the status of the ground-water inventory in the State. A larger map of the State at a scale of 1:500,000 shows potential well production, depth to water in selected wells in spring 1976, and change in water level in selected wells from 1971 to 1976. The brief text...

Babcock, H.M.
Annual summary of ground-water conditions in Arizona, spring 1975 to spring 1976; 1977; WRI; 77-10; Babcock, H. M.

Filter Total Items: 197
March 21, 2010

Measuring Low Flow in San Pedro River

Measuring low flow in the San Pedro River with flume.

January 27, 2010

Streamflow Measurement, Pinto Creek, AZ (Jan 2010)

USGS streamgagers, Mike Sanders, Arthur Rees, and Mike Schilling, are servicing the Pinto Creek near Miami, Arizona streamflow gaging station and making a streamflow measurement on January 28, 2010. Flow was measured to be 207 cubic feet per second (CFS) on the 28th but peaked earlier on the 22nd at an estimated 7,400 cfs. Debris from the flood flow can be seen in trees

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January 21, 2010

USGS Measurement, Salt River (January 2010 )

USGS streamgagers, Mike Sanders and Henry Sanger are servicing the, Salt River near Roosevelt, Arizona streamflow gaging station and making a streamflow measurement on January 22, 2010. Flow was measured to be 44,500 cubic feet per second (CFS) on the 22th but peaked earlier on the 22nd at an estimated 88,000 cfs. The measurement was made from the cableway just downstream

...
January 21, 2010

Streamflow Measurement, Rillito Creek AZ (Jan 2010)

USGS employees, John Hoffmann, Corey Salmond, Robert Fritzinger, and Chris Smith are being interviewed by Naomi Pescovitz from KVOA on January 22, 2010. Robert Fritzinger and Corey Salmond are making a streamflow measurement at Rillito Creek at La Cholla BLVD near Tucson streamflow gaging station. The updated peak was 1,360 cubic feet per second (CFS) on January 22, 2010.

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Image: Jurassic Rocks in Arizona
January 1, 2010

Jurassic Rocks in Arizona

Gordon Haxel (USGS, Flagstaff) explains the Jurassic geology of the Baboquivari Mountains, Arizona. Kitt Peak, Arizona, November 2009. Bob Powell (USGS, Tucson) holds the map.

Image: Mine Blast at Silver Bell Mine, Arizona
January 1, 2010

Mine Blast at Silver Bell Mine, Arizona

Mine Blast at Silver Bell Mine, Arizona.

The former Pigeon Mine in northern Arizona is seen here looking towards the northeast.
December 31, 2009

The former Pigeon Mine in northern Arizona

The former Pigeon Mine in northern Arizona is seen here looking towards the northeast.

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 USGS.

Photo of Pigeon Canyon just before it merges with Snake Gulch in northern Arizona. 
December 31, 2009

Pigeon Canyon in northern Arizona

Here, Pigeon Spring emerges in Pigeon Canyon just before it merges with Snake Gulch in northern Arizona. 

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 USGS.

Image: Boundary Monument 75E, Southeastern Arizona - 2009
April 24, 2009

Boundary Monument 75E, Southeastern Arizona - 2009

An anti-vehicle barricade has been constructed across this section of the international boundary. Grass cover has increased in the foreground, providing evidence of the site’s grassland connection. (Raymond M. Turner)

Photo of a female silky flycatcher with mistletoe berry.
April 1, 2009

WERC A Silky Flycatcher with a Mistletoe Berry

A female silky flycatcher with a mistletoe berry in her beak. These flycatchers are intimately tied to mistletoe. They build their beautiful cup nests (much like a large hummingbird nest) within the mistletoe, or nearby. The young hatch during February when the mistletoe may be in flower and supply a rich source of insect nutrients for growing young. The rest of the year,

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A very close-up photo of sand grains from the Grand Canyon River, with a centimeter scale drawn on top.
December 31, 2008

Grand Canyon sand

Grand Canyon sand was photographed with a hand-held point-and-shoot camera in a waterproof housing.

August 27, 2008

Havasu Creek Flood Damage (2008)

USGS staff evaluates flood damage caused by the recent Havasu Creek Flood, August 2008.

Filter Total Items: 179
USGS science for a changing world logo
April 27, 2009

Adult endangered humpback chub (Gila cypha) in Grand Canyon, Arizona, increased by about 50 percent between 2001 and 2008, according to analysis recently conducted by the U.S. Geological Survey. The upward trend reverses population declines from 1989 to 2001. 

USGS science for a changing world logo
April 24, 2009

U.S. Geological Survey scientists will brief reporters by phone at 3:00 pm Eastern Daylight Time/12:00 pm Mountain Standard Time. Monday, April 27, on the latest population numbers for the humpback chub (Gila cypha) in Grand Canyon, Arizona.

USGS science for a changing world logo
March 2, 2009

Volunteers across the nation are being recruited to get outdoors and help track the effects of climate on seasonal changes in plant and animal behavior.
The USA-National Phenology Network (USA-NPN), a consortium of government, academic and citizen-scientists, is launching a new national program built on volunteer observations of flowering, fruiting and other seasonal events.

USGS science for a changing world logo
February 25, 2009

Unique fractures in lavas on ancient Mars suggest water occasionally flooded portions of the planet's surface.
The fractures, known as "columnar joints", are the first that have been observed on a planet other than Earth.

USGS science for a changing world logo
February 12, 2009

Astrogeologists at the U.S. Geological Survey in Flagstaff provided critical datasets used in the latest release of Google Earth. The updated software enables users to explore Mars in high detail.
"Without the ability to accurately co-align data sets, applications like Google Earth would not be nearly as useful," said Trent Hare, a GIS expert with the USGS Astrogeology Team.

USGS science for a changing world logo
December 18, 2008

Dr. Julio Betancourt, a U.S. Geological Survey senior scientist, was recently awarded a prestigious 2008 Presidential Rank Award. Betancourt, who has conducted groundbreaking research in how climate variability affects ecosystems, is also an adjunct professor at the University of Arizona, where he received his graduate degrees.

 

USGS
October 9, 2008

Local planetary geologist Chris Okubo is on a mission to understand the past roles of groundwater and faulting on Mars by studying similar locations on Earth.  Okubo works in the Astrogeology Research Program for the U.S. Geological Survey (USGS) in Flagstaff.

USGS
June 17, 2008

Long-term trends in landscape conditions have significantly reduced sagebrush habitat and populations of greater sage-grouse, according to a new study examining the bird's chances of survival.

USGS
April 21, 2008

The Upper San Pedro Partnership was recognized with the Department of the Interior's Cooperative Conservation Award today.

USGS
April 7, 2008

Time lapse videos of sandbars from the Glen Canyon Dam high flow experiment have been released by the U.S. Geological Survey (USGS).

USGS
March 18, 2008

Competition for water is becoming more intense as the nation's population continues to grow, increasing the demands for water use in agriculture and power production.

USGS
March 13, 2008

A report published by the U.S. Geological Survey (USGS) contains a regional map and associated database that inventory 121 locations of reported natural asbestos and fibrous amphibole occurrences in the Southwestern United States, including Arizona, Nevada, and Utah.