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Arizona

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February 19, 1993

Flash Floods: USGS Against the Water

A glimpse at the often dangerous task USGS employees make every year to obtain stream flow measurements from flood events.

February 19, 1993

Verde-Tangle Severe Flood 1993

This video documents two USGS employees taking a flood measurement during the most severe flood Arizona has seen in 100 years.

Image: Santa Catalina Highway, near Tucson, Southern Arizona - 1987
December 27, 1987

Santa Catalina Highway, near Tucson, Southern Arizona - 1987

This image was taken above the Santa Catalina Highway near mile 2.8 a few months after a fire burned across a south-facing slope. The saguaros are showing the effects of being scorched but are still standing. (Raymond M. Turner).

Harrison Schmitt posing with the American Flag during the Apollo 17 mission
December 31, 1972

Harrison 'Jack' Schmitt with the American Flag and Earth (Apollo 17)

Harrison H. Schmitt during the Apollo 17 mission.

David Scott and James Irwin operating Grover
November 1, 1970

Apollo Grover Historical Photo: B1

James Irwin(left) and David Scott(right) training in the Lunar Roving Vehicle training version known also known as the "Grover"

Image: San Carlos River near Peridot, Southern Arizona - 1964
June 4, 1964

San Carlos River near Peridot, Southern Arizona - 1964

Riparian vegetation has increased to the extent of blocking the downstream view. The channel appears to have shifted to the right, and the terrace is now occupied by cottonwood, black willow, and tamarisk. (Raymond M. Turner).

Image: Huérfano Butte, Santa Rita Experimental Range, Southern Arizona  - 1941
September 1, 1941

Huérfano Butte, Santa Rita Experimental Range, Southern Arizona - 1941

Members of the 1930s burrowed and cholla eruptions were visible in 1941 as well as new mesquite plants that were already quite large. (Photographer unknown).

Image: San Carlos River near Peridot, Southern Arizona - 1940
March 21, 1940

San Carlos River near Peridot, Southern Arizona - 1940

In 1940, the gaging station for the San Carlos River was on a railroad bridge south of the little town of Peridot. This downstream view from that bridge shows the gage house on the extreme left and a safety railing next to it. The channel is wide following a flood, and scattered Frémont cottonwood trees are along channel right. The dense shrubs on the low terrace on the

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Image: Huérfano Butte, Santa Rita Experimental Range, Southern Arizona - 1902
April 1, 1902

Huérfano Butte, Santa Rita Experimental Range, Southern Arizona - 1902

Ground repeat photography location 233 looking west at Huérfano Butte, at 1,159-meter elevation. In 1902, photographer David Griffiths’ horse-drawn buggy was clearly visible in the open grassland, and scattered desert hackberry plants were behind and on either side of the buggy. (David Griffiths).

USGS
October 1, 2018

Planetary Geologic Mapping Handbook 2010

Planetary Geologic Mapping Handbook 2010

Image: Arizona Road

Arizona Road

A road winds through BLM public lands in Arizona.

Filter Total Items: 187
USGS
May 27, 2004

A group of federal and university scientists today announced the launch of the Western Mountain Initiative, a 5-year effort funded by the U.S. Geological Survey (USGS) to better understand ongoing changes in the mountains of the western United States.

USGS science for a changing world logo
April 26, 2004

Farmlands, wetlands, forests and deserts that composed the American landscape in the early 20th century have frequently been transformed during the past 30 years into mushrooming metropolitan areas as urbanization spreads across the country.

USGS
April 26, 2004

Farmlands, wetlands, forests and deserts that composed the American landscape in the early 20th century have frequently been transformed during the past 30 years into mushrooming metropolitan areas as urbanization spreads across the country.

USGS science for a changing world logo
August 8, 2003

Wesley Ward has been named Regional Executive for Geology for the Western Region of the U.S. Geological Survey (USGS). The announcement of Ward’s new appointment was made by John D. Buffington, Western Regional Director, effective Aug. 11, 2003.

USGS science for a changing world logo
March 4, 2003

It’s 6 in the evening on February 12 at a sandy campsite on the banks of the Colorado River in northeastern Arizona. A crew of 18 is assembled 50 river miles downstream of Lees Ferry in the Grand Canyon of the Colorado River. The sun has disappeared long ago from the steep canyon walls, and nighttime temperatures hang at a cool 40 degrees Fahrenheit.

USGS
March 4, 2003

It’s 6 in the evening on February 12 at a sandy campsite on the banks of the Colorado River in northeastern Arizona. A crew of 18 is assembled 50 river miles downstream of Lees Ferry in the Grand Canyon of the Colorado River.

USGS
February 14, 2003

Not long ago, conventional wisdom was that you couldn’t predict the climate for more than a few days in advance. Then came the awareness of El Niño and La Niña and the forecast window increased to as much as 6 to 9 months, depending on the region and season.

USGS science for a changing world logo
December 15, 2002

Surface water in the form of ice exposed near the edge of Mars’s southern perennial polar cap has been discovered for the first time, according to U.S. Geological Survey (USGS) research released today in the journal Science. There is evidence that the surface water ice in this region may be widespread - from a half-mile to six miles around the entire southern polar ice cap.

USGS science for a changing world logo
July 24, 2002

Last week, USGS scientists began sampling sediment and organic-rich streamflow coming from the Rodeo/Chediski fire burn area to discern possible ecological and water-quality effects of this discharge. In addition, three new USGS streamflow gages are allowing advance warning of possible flooding to affected Arizona communities.

USGS
July 24, 2002

Last week, USGS scientists began sampling sediment and organic-rich streamflow coming from the Rodeo/Chediski fire burn area to discern possible ecological and water-quality effects of this discharge. In addition, three new USGS streamflow gages are allowing advance warning of possible flooding to affected Arizona communities.

USGS
April 24, 2002

Picture a sunset in which a "forest" of that Sonoran Desert icon the saguaro cactus is silhouetted against the skyline. Now picture that sunset minus the saguaros and you will have an idea why researchers and resource managers across southern Arizona fear the take-over of the desert by invasive nonnative grasses.

USGS
October 23, 2001

The natural richness of the Colorado Plateau of the southwestern United States is the focus of the Sixth Biennial Conference of Research on the Colorado Plateau, November 6-8, at the du Bois Conference Center on the campus of Northern Arizona University in Flagstaff, Ariz.