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Filter Total Items: 119
Photo of Bird Bands in a Variety of Sizes and Types
Date Published: May 1, 2018
Status: Active

Bird Banding Laboratory

The Bird Banding Laboratory (BBL) is an integrated scientific program established in 1920 supporting the collection, archiving, management and dissemination of information from banded and marked birds in North America.  This information is used to monitor the status and trends of resident and migratory bird populations. Because birds are good indicators of the health of the environment, the...

Photo of AzWSC scientists working on Lake Powell
Date Published: March 19, 2018
Status: Active

AzWSC Capabilities: Reservoir and Lake Monitoring and Assessment

The Arizona Water Science Center (AzWSC) has specialized expertise in monitoring, measuring, and collecting reservoir and lake water and sediment for a variety of phycial and chemical properties.

San Bernardino Arizona
Date Published: March 19, 2018
Status: Active

Ciénega San Bernardino - Wetland Restoration

Desert marshes, or ciénega, are extremely biodiverse habitats imperiled by anthropogenic demands for water and changing climates. Given their widespread loss and increased recognition as important wildlife habitat, remarkably little is known about restoration techniques.

Contacts: Laura M Norman
Patagonia Arizona
Date Published: March 19, 2018
Status: Active

Patagonia - Gully Restoration

The Deep Dirt Farm Institute (DDFI), founded and directed by Kate Tirion, comprises 34 acres with deep agricultural soils, bisected by an ephemeral stream/wildlife corridor. The farm lies within a folded topography of hills, small sheltered valleys & broad meadow.  A deep gully has diverted flows and needs repair...

Contacts: Laura M Norman
Photograph of gabion dam in Nogales, Sonora
Date Published: March 19, 2018
Status: Active

Nogales, Sonora - Flood Control

Flooding in Ambos Nogales often exceeds the capacity of the channel and adjacent land areas, endangering people and property. Goals of RDS are to diminish impacts of flooding and sedimentation on wastewater infrastructure thereby reducing the incidence of sanitary sewer overflows. We are studying the Nogales Wash to prevent future flood disasters and RDS are being installed in tributaries. We...

Contacts: Laura M Norman
WERC Ants collect seeds/floret
Date Published: October 30, 2017
Status: Active

Process-based Approaches for Ecological Restoration of Degraded Drylands

Surface disturbances ranging from military training, recreation, energy exploration and development, and wildfires impact a large majority of federal lands in the western US, but the ecological and economic impacts are poorly understood. Explore this webpage to learn how Dr. Lesley DeFalco and her research team are currently evaluating and refining conventional approaches for post-fire...

Contacts: Lesley DeFalco
Plants grown in a greenhouse
Date Published: October 30, 2017
Status: Active

Native Plant Materials for Ecological Restoration of Degraded Drylands

There is a growing consensus among resource managers to use native plant materials for ecological restoration of degraded drylands. Some plant species may be suitable for re-introduction across broad environmental gradients. Other species may fail under narrower conditions, or their re-introduction may have genetic consequences for local ecotypes, particularly when adapting to future climate...

Contacts: Lesley DeFalco
Eureka Valley. Desert Landscape photo
Date Published: October 30, 2017
Status: Active

Conservation of Rare, Sensitive, and At-risk Desert Plant Species

The Mojave Desert is among the hottest and driest of the North American drylands, but in spite of these extreme conditions, and in part because of them, a diverse flora exists. This diversity of rare, endemic, and endangered species is threatened by the complex interaction between fluctuating climate and human-mediated disturbances. USGS studies have identified rare species “hotspots” for...

Contacts: Lesley DeFalco
Map of the Colorado Plateau, including the San Juan River pilot study area.
Date Published: October 3, 2017

Colorado Plateaus Regional Groundwater Availability

Pilot phase

This study is in a pilot phase during fiscal years 2017 and 2018. The purpose of the pilot phase is to identify possible technical challenges of using the USGS code GSFLOW for simulating groundwater and surface-water flow in the Colorado Plateau principal aquifer system. During the pilot phase, the project will evaluate GSFLOW in the San Juan River Basin (...

A restoration field trial site on red soils, adjacent to buttes.
Date Published: August 5, 2017
Status: Active

RestoreNet: Distributed Field Trial Network for Dryland Restoration

Recovery from disturbance represents a substantial challenge to agencies that manage large tracts of land in the Southwest. Despite the demand for restoration and rehabilitation, little information is available to help managers effectively reestablish native perennial vegetation and stabilize soils, especially given changing climate and disturbance regimes.

Forestry and agriculture have...

Contacts: Molly McCormick, Seth Munson, Brad Butterfield, Elise Gornish
Microplastics sampling on Lake Mead
Date Published: August 4, 2017
Status: Active

Occurrence and Potential Risk of Microplastics in Lake Mead and the Delaware River

There is mounting evidence that microplastics present a significant threat to aquatic organisms. Microplastics – defined as plastic particles less than 5 mm in diameter – come from many different sources, including synthetic textiles, industrial waste products, personal care products, and the breakdown of litter, car tires, and other objects. This study will assess the occurrence of...

Collecting aquatic invertibrates
Date Published: April 25, 2017
Status: Active

National Water-Quality Program Monitoring Networks, Arizona, 2013-2023

The Arizona Water Science Center collects water-quality data from stream and aquifer sites in networks that are part of the National Water-Quality Program (NWQP) and the National Stream Quality Accounting Network (NASQAN).

Filter Total Items: 126
Year Published: 1994

Summary of ground-water conditions in Arizona, 1987-90

Annual ground-water withdrawals in Arizona were 2.9, 3.3, 3.6, and 3.4 million acre-feet for calendar years 1987. 1988, 1989, and 1990. The average annual ground-water withdrawal for Arizona from 1980-89 was 3.7 million acre-feet, which was the lowest average annual withdrawal for any decade since the 1940' s. Since 1947, annual ground-water...

Anning, D.W.; Duet, N.R.
Summary of ground-water conditions in Arizona, 1987-90; 1994; OFR; 94-476; Anning, D. W.; Duet, N. R.

Year Published: 1994

Method to identify wells that yield water that will be replaced by Colorado River water in Arizona, California, Nevada, and Utah

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. A method was developed to identify wells...

Wilson, Richard P.; Owen-Joyce, Sandra J.
Method to identify wells that yield water that will be replaced by Colorado River water in Arizona, California, Nevada, and Utah; 1994; WRI; 94-4005; Wilson, Richard P.; Owen-Joyce, Sandra J.

Year Published: 1993

Determining the source of water pumped from wells along the lower Colorado River

Wilson, Richard P.; Owen-Joyce, Sandra J.
Determining the source of water pumped from wells along the lower Colorado River; 1993; OFR; 93-405; Wilson, Richard P.; Owen-Joyce, Sandra J.

Year Published: 1993

Results of ground-water, surface-water, and water-quality monitoring, Black Mesa area, northeastern Arizona, 1991-92

Littin, G.R.
Results of ground-water, surface-water, and water-quality monitoring, Black Mesa area, northeastern Arizona, 1991-92; 1993; WRI; 93-4111; Littin, G. R.

Year Published: 1993

Streamflow and sediment-transport data, Colorado River and three tributaries in Grand Canyon, Arizona, 1983 and 1985-86

The U.S. Geological Survey collected streamflow and sediment-transport data at 5 streamflow-gaging stations on the Colorado River between Glen Canyon Dam and Lake Mead as a part of an interagency environmental study. The data were collected for about 6 mo in 1983 and about 4 mo in 1985-86; data also were collected at 3 sites on tributary streams...

Garrett, W.B.; van de Vanter, E.K.; Graf, J.B.
Streamflow and sediment-transport data, Colorado River and three tributaries in Grand Canyon, Arizona, 1983 and 1985-86; 1993; OFR; 93-174; Garrett, W. B.; van de Vanter, E. K.; Graf, J. B.

Year Published: 1992

Accounting System for Water Use by Vegetation in the Lower Colorado River Valley

The Colorado River is the principal source of water in the valley of the Colorado River between Hoover Dam and the international boundary with Mexico (fig. 1). Agricultural, domestic, municipal, industrial, hydroelectric-power genera-tion, and recreation are the primary uses of river water in the valley. Most of the consumptive use of water from...

Owen-Joyce, Sandra J.
Accounting System for Water Use by Vegetation in the Lower Colorado River Valley; 1992; OFR; 92-83; Owen-Joyce, Sandra J.

Year Published: 1992

Results of ground-water, surface-water, and water-quality monitoring, Black Mesa area, northeastern Arizona; 1989-90

Sottilare, J.P.; Bills, D.J.; Brown, J.G.
Results of ground-water, surface-water, and water-quality monitoring, Black Mesa area, northeastern Arizona; 1989-90; 1992; WRI; 92-4008; Sottilare, J. P.; Bills, D. J.; Brown, J. G.

Year Published: 1992

Results of ground-water, surface-water, and water-quality monitoring, Black Mesa area, northeastern Arizona; 1990-91

Littin, G.R.
Results of ground-water, surface-water, and water-quality monitoring, Black Mesa area, northeastern Arizona; 1990-91; 1992; WRI; 92-4045; Littin, G. R.

Year Published: 1992

Summary of ground-water conditions in Arizona 1985-86

Wilson, Richard P.
Summary of ground-water conditions in Arizona 1985-86; 1992; WRI; 90-4179; Wilson, Richard P.

Year Published: 1991

Low-flow sediment transport in the Colorado River

In support of beach-stability research, bedload and suspended sediment were measured during a steady flow of 5,880 ft3/s and receding flows from 12,100 to 5,660 ft3/s in the Colorado River above National Canyon, near Supai, Arizona, October 7-12, 1989. During steady flows, 75 percent of the mean total-sediment discharge of 128 t/d was in...

Gray, John R.; Webb, Robert H.; Hyndman, David W.
Low-flow sediment transport in the Colorado River; 1991; Article; Conference publication; Proceedings of the Fifth Federal Interagency Sedimentation Conference; Gray, John R.; Webb, Robert H.; Hyndman, David W.

Year Published: 1991

Lower Colorado River Accounting System (LCRAS) computer program and documentation

von Allworden, B. K.; Owen-Joyce, Sandra J.; Sandoval, John D.; Raymond, Lee H.
Lower Colorado River Accounting System (LCRAS) computer program and documentation; 1991; OFR; 91-179; von Allworden, B. K.; Owen-Joyce, Sandra J.; Sandoval, John D.; Raymond, Lee H.

Year Published: 1991

Relation of sediment load and flood-plain formation to climatic variability, Paria River drainage basin, Utah and Arizona

Flood-plain alluviation began about 1940 at a time of decreasing magnitude and frequency of floods in winter, summer, and fall. No floods with stages high enough to inundate the flood plain have occurred since 1980, and thus no flood-plain alluviation has occurred since then. The decrease in magnitude and frequency of floods appears to have...

Graf, J.B.; Webb, R.H.; Hereford, R.
Relation of sediment load and flood-plain formation to climatic variability, Paria River drainage basin, Utah and Arizona; 1991; Article; Journal; Geological Society of America Bulletin; Graf, J. B.; Webb, R. H.; Hereford, R.

Filter Total Items: 192
June 22, 2013

Animal Interactions at Wind Energy Facilities – American Black Bear

This American black bear and cub duo was seen simply investigating a tortoise burrow, and although it is surprising to see a black bear so low in elevation, it isn't impossible. The study site, Mesa, sits at the intersection of multiple ecosystems (Sonoran Desert, Mojave Desert, montane, and coastal sage scrub). Therefore, the bears could have come down from the montane

...
June 22, 2013

Animal Interactions at Wind Energy Facilities – Coyotes

Coyotes were the second most frequently observed mammalian predator on the trail cameras. Coyotes are considered one of the primary predators of desert tortoises. In this instance, a coyote is passing by a burrow when it suddenly has a change in attention as it is passing by. It then approaches the burrow and sniffs all around the burrow entrance (including the apron and

...
USGS and US Forest Service staff installing dust monitoring equipment at a uranium mine near Grand Canyon National Park.
May 31, 2013

USGS and US Forest Service staff installing dust monitoring equipment

USGS and US Forest Service staff installing dust monitoring equipment at a uranium mine near Grand Canyon National Park.

Climate change combined with overlapping high-intensity land uses are likely to create conditions detrimental to the recreation economy, wildlife habitat, water availability and other resources in hyper-arid landscapes, or drylands, in the future

...
January 19, 2013

Arizona Water Use Program

The Arizona Water Use program has complied vast research over the years to track water use and encourage sustainability in the state. The research gained and applied is very important to the economy development of the state of Arizona.

Bureau of Land Management truck sprays herbicide in southwestern Idaho as part of a restoration effort. 
December 31, 2012

Truck sprays herbicide in Idaho as part of a restoration effort.

Bureau of Land Management truck sprays herbicide in southwestern Idaho as part of a restoration effort. 

An examination of long-term data for lands managed by the Bureau of Land Management finds that land treatments in the southwestern United States are increasingly large, expensive and related to fire and invasive species control.

December 11, 2012

Streamflow Gaging Station and Measurement on San Pedro River, AZ

USGS employee, Hanna Coy, talks about stream gauging.

A photo of a female mountain bluebird with mistletoe.
November 28, 2012

WERC Mountain Bluebird Eating Mistletoe Berry

A mountain bluebird eats a giant mistletoe berry in an ash tree in Sedona, Arizona (Oak Creek).  These bluebirds, and many other types of birds, rely on mistletoe berries for sustenance. As a result, they also help distribute the mistletoe seeds.

Image: Sandbar growth Grand Canyon following controlled flood
October 31, 2012

Sandbar growth Grand Canyon following controlled flood

Picture showing the increased size of the sandbar after the November 2012 controlled flood from the Glen Canyon Dam. This location is 65 miles downstream from Lees Ferry and the view is looking downstream. These and additional photographs depicting the results of the recent controlled floods can be viewed online.

 

Attribution: Natural Hazards
Image: Sandbar in Grand Canyon
September 30, 2012

Sandbar in Grand Canyon

Picture showing the size of the sandbar before the November 2012 controlled flood from the Glen Canyon Dam. This location is 65 miles downstream from Lees Ferry and the view is looking downstream. These and additional photographs depicting the results of the recent controlled floods can be viewed online.

 

September 30, 2012

USGS Fun

Working at the USGS can be fun. These student employees were given wonderful opportunities and made lasting friendships while working at the USGS.

September 12, 2012

Continuous Slope Area Method: Sycamore Creek, AZ

A video depicting the installation & operation of Continuous Slope Area gage and radar sensor, installed after the Sunflower Wild Fire on Sycamore Creek to measure streamflow from the Sunflower burned area. The streamflow data is used to provide flood warning to communities affected by runoff from the burned areas and for collecting streamflow data from areas that have

...
Image: University of Arizona Sensors on Amazon Observation Tower
July 23, 2012

University of Arizona Sensors on Amazon Observation Tower

Sensors installed by University of Arizona scientists on this 213-foot (65-meter) tower near Santarém, Brazil are used by USGS scientists and U.S., Brazilian and Australian collaborators to improve understanding of how seasonal variations in climate affect photosynthesis and the uptake of atmospheric carbon dioxide by tropical forests.

Tapajós National Forest, near

...
Filter Total Items: 177
USGS
July 25, 2013

USGS research geologist Kyle House has been recognized by the Geological Society of America for work that helps explain how and when the Grand Canyon and the lower Colorado River took their present form, a scientific problem that has vexed geologists for more than a century.

USGS
January 29, 2013

Lake Mead National Recreation Area's water quality is good, the sport fish populations are sufficient, and the lakes provide important habitat for an increasing number of birds. 

USGS
November 28, 2012

MENLO PARK, Calif. —New insights into the differences between fire ecologies of the Chihuahuan and Mojave Deserts in the southwestern United States are coming through the use of terrestrial Light Detection and Ranging, or lidar, technology. Studies by the U.S. Geological Survey show that while fire is detrimental to some areas of the desert, it is beneficial to others. 

USGS
October 19, 2012

FLAGSTAFF, Ariz. — Experts in volcano hazards and public safety have started a conversation about volcanoes in the southwestern United States, and how best to prepare for future activity. Prior to this meeting, emergency response planning for volcanic unrest in the region had received little attention by federal or state agencies.

USGS
July 23, 2012

Dr. Justin Hagerty, a research geologist with the U.S. Geological Survey, was named one of President Obama's recipients of the Presidential Early Career Award for Scientists and Engineers, the highest honor bestowed by the United States government on science and engineering professionals in the early stages of their independent research careers. 

USGS
July 5, 2012

TUCSON, Ariz. —On Wednesday, the U.S. Geological Survey finished installing six early-flood-warning units—rain and stream gages—in the burned areas of New Mexico’s Whitewater-Baldy Fire. The gages transmit data via satellite to the National Weather Service, which provides warnings to communities that may be affected by flooding. The gages can provide up to 60 minutes advanc

USGS
May 21, 2012

FLAGSTAFF, Ariz. — Laszlo Kestay has been named the new director of the U.S. Geological Survey Astrogeology Science Center, based in Flagstaff, Ariz. Kestay will lead the Astrogeology team in working closely with NASA and other planetary science organizations to develop and operate space missions exploring the Solar System, process and analyze data from many types of instruments...

USGS
February 21, 2012

FLAGSTAFF, Ariz. — Coconino National Forest’s Cinder Lake—a natural depression that has been used to store runoff from areas affected by the 2010 Schultz Fire—can store about 4,000 acre-feet of water, or enough to fill about 2,000 Olympic-sized swimming pools, according to a new U.S. Geological Survey report.

USGS
February 15, 2012

TUCSON, Ariz. – Climate change is likely to have strong effects on the abundance of dominant Sonoran Desert plant species, according to a study published recently in Global Change Biology.

USGS science for a changing world logo
December 19, 2011

The U.S. Geological Survey has named ecologist David Lytle the director of its ‪Southwest Biological Science Center, headquartered in Flagstaff.

“Rapid growth, changes in land use, and limited rainfall in the southwest region of the U.S. create challenges for natural resource management,” remarked USGS director Marcia McNutt. 

USGS science for a changing world logo
December 1, 2011

More than 280 million acre-feet of groundwater has been withdrawn from the Mississippi embayment aquifer system between 1870-2007, according to a new water modeling tool developed by the U.S. Geological Survey.

USGS science for a changing world logo
October 25, 2011

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.

Filter Total Items: 83