Unified Interior Regions

Nevada

The Southwest Region includes California, Nevada, and Arizona. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions.

States L2 Landing Page Tabs

Filter Total Items: 74
Date published: March 2, 2016

USGS California Volcano Observatory (CalVO)

CalVO operates real-time volcano monitoring networks, disseminates forecasts and notifications of significant activity, assesses volcano hazards, researches volcano processes, and works with communities to prepare for volcanic eruptions in California and Nevada. The Observatory is located at USGS offices in Menlo Park, California.

Date published: November 15, 2001
Status: Archived

SAGEMAP

A GIS Database for Sage-grouse and Shrubsteppe Management in the Intermountain West

Contacts: Steven E Hanser
Filter Total Items: 102
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Year Published: 1995

Ground-water conditions and effects of mine dewatering in Desert Valley, Humboldt and Pershing Counties, northwestern Nevada, 1962-91

Desert Valley is a 1,200-square-mile, north- trending, structural basin, about 30 miles northwest of Winnemucca, Nevada. Unconsolidated basin-fill deposits exceeding 7,000 feet in thickness constitute the primary ground-water reservoir. Dewatering operations at an open-pit mine began in the Spring of 1985 in the northeast part of Desert Valley....

Berger, D.L.
Attribution: Water Resources
Ground-water conditions and effects of mine dewatering in Desert Valley, Humboldt and Pershing Counties, northwestern Nevada, 1962-91; 1995; WRI; 95-4119; Berger, D. L.

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Year Published: 1995

Irrigated croplands, estimated pumpage, and water-level changes in Diamond Valley, Eureka and Elko counties, Nevada, through 1990

Arteaga, Freddy E.; Smith, J. LaRue; Harrill, James R.
Irrigated croplands, estimated pumpage, and water-level changes in Diamond Valley, Eureka and Elko counties, Nevada, through 1990; 1995; OFR; 95-107; Arteaga, Freddy E.; Smith, J. LaRue; Harrill, James R.

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Year Published: 1995

Carbonate deposition, Pyramid Lake subbasin, Nevada: 2. Lake levels and polar jet stream positions reconstructed from radiocarbon ages and elevations of carbonates (tufas) deposited in the Lahontan basin

Most of the tufas in the Pyramid Lake subbasin were deposited within the last 35 000 yr, including most of the mound tufas that border the existing lake. Many of the older tufas (>21 000 yr BP) contained in the mounds were formed in association with groundwater discharge. Lake Lahontan experienced large and abrupt rises in level that are...

Benson, L.; Kashgarian, Michaele; Rubin, M.
Carbonate deposition, Pyramid Lake subbasin, Nevada: 2. Lake levels and polar jet stream positions reconstructed from radiocarbon ages and elevations of carbonates (tufas) deposited in the Lahontan basin; 1995; Article; Journal; Palaeogeography, Palaeoclimatology, Palaeoecology; Benson, L.; Kashgarian, M.; Rubin, M.

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Year Published: 1994

Accounting for Consumptive Use of Lower Colorado River Water in Arizona, California, Nevada, and Utah

In the Colorado River valley between the east end of Lake Mead and the international boundary with Mexico (see figure), the river is the principal source of water for agricultural, domestic, municipal, industrial, hydroelectric-power generation, and recreational purposes. Water is stored in surface reservoirs and in the river aquifer---permeable...

Owen-Joyce, Sandra J.; Wilson, Richard P.
Accounting for Consumptive Use of Lower Colorado River Water in Arizona, California, Nevada, and Utah; 1994; FS; 074-94; Owen-Joyce, Sandra J.; Wilson, Richard P.

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Year Published: 1994

Carbonate deposition, Pyramid Lake subbasin, Nevada: 1. Sequence of formation and elevational distribution of carbonate deposits (Tufas)

During the late Quarternary, the elevation of terrace cutting and carbonate deposition in the Pyramid Lake subbasin were controlled by constancy of lake level imposed by spill to adjoining subbasins. Sill elevations are 1177-1183 m (Mud Lake Slough Sill), 1207 m (Emerson Pass Sill), and 1265 m (Darwin Pass Sill). Carbonate deposition was favored...

Benson, L.
Carbonate deposition, Pyramid Lake subbasin, Nevada: 1. Sequence of formation and elevational distribution of carbonate deposits (Tufas); 1994; Article; Journal; Palaeogeography, Palaeoclimatology, Palaeoecology; Benson, L.

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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.

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Year Published: 1993

Factors Affecting 14C Ages of Lacustrine Carbonates: Timing and Duration of the Last Highstand Lake in the Lahontan Basin

Two processes contribute to inaccurate 14C age estimates of carbonates precipitated within the Lahontan basin, NevadaCalifornia: low initial 14C/C ratios in lake water (reservoir effect) and addition of modern carbon to calcium carbonate after its precipitation. The mast reliable set of 14C ages on carbonates from elevations > 1310 m in the...

Benson, L.
Factors Affecting 14C Ages of Lacustrine Carbonates: Timing and Duration of the Last Highstand Lake in the Lahontan Basin; 1993; Article; Journal; Quaternary Research; Benson, L.

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Year Published: 1992

Lithologic properties of carbonate-rock aquifers at five test wells in the Coyote Spring Valley area, southern Nevada, as determined from geophysical logs

Berger, D.L.
Lithologic properties of carbonate-rock aquifers at five test wells in the Coyote Spring Valley area, southern Nevada, as determined from geophysical logs; 1992; WRI; 91-4167; Berger, D. L.

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Year Published: 1992

Lake-size variations in the Lahontan and Bonneville basins between 13,000 and 9000 14C yr B.P

Recessions of Lakes Lahontan and Bonneville that commenced ???13,500 14C yr B.P. were interrupted at {slanted equal to or greater-than}11,500 14C yr B.P. in the Lahontan basin and ???12,200 14C yr B.P. in the Bonneville basin by relatively large perturbations in lake level that persisted for ??? 2000 years. Minor glacial readvances in the Sierra...

Benson, L.; Currey, D.; Lao, Y.; Hostetler, S.
Lake-size variations in the Lahontan and Bonneville basins between 13,000 and 9000 14C yr B.P; 1992; Article; Journal; Palaeogeography, Palaeoclimatology, Palaeoecology; Benson, L.; Currey, D.; Lao, Y.; Hostetler, S.

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Year Published: 1991

Water-level and pumpage data for Las Vegas Valley, Clark County, Nevada, 1986-90

Burbey, Thomas J.
Attribution: Water Resources
Water-level and pumpage data for Las Vegas Valley, Clark County, Nevada, 1986-90; 1991; OFR; 91-496; Burbey, Thomas J.

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Year Published: 1991

Change in the size of Walker Lake during the past 5000 years

In 1984, a 12-m sediment core (WLC84-8) was taken from the deepest part of Walker Lake. Samples of the core were analysed for diatoms, pollen, carbonate mineralogy, magnesium content, ??18O and ??13C values of the total inorganic fractin, ??18O and ??13C values of Limnocythere ceriotuberosa, ??13C values of the total organic fraction, grain size,...

Benson, L. V.; Meyers, P.A.; Spencer, R.J.
Change in the size of Walker Lake during the past 5000 years; 1991; Article; Journal; Palaeogeography, Palaeoclimatology, Palaeoecology; Benson, L. V.; Meyers, P. A.; Spencer, R. J.

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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.
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.

Filter Total Items: 111
aspen in a post-fire seral aspen-conifer stand
June 29, 2010

Aspen regeneration after stand-replacing fire

Aspen regeneration after stand-replacing fire in a seral aspen-conifer stand in the Jarbidge Mountains, Nevada

Greater sage-grouse flying.
March 28, 2010

Greater sage-grouse flying.

Greater sage-grouse flying.

Image: Silicified Ridge At Goldfield, Nevada
July 23, 2009

Silicified Ridge At Goldfield, Nevada

Taking notes on a silicified ridge at Goldfield, Nevada. Silicified ridges are typically associated with epithermal gold deposits.

Tamarisk growing along a river
April 22, 2006

A single species stand of nonnative tamarisk

Single species stand of nonnative tamarisk on the Lower Colorado River at Cibola National Wildlife Refuge, California

Small tress re-growing after a fire
April 22, 2006

Nonnative tamarisk re-grows following a wildfire

Nonnative tamarisk is resistant to wildfire, in part because of its ablity to re-sprout.

Shrubs re-sprout after a wildfire
April 22, 2006

Nonnative tamarisk re-sprouts after wildfire

Nonnative tamarisk is resistant to wildfire, in part due to its ability to resprout

A tamarisk plant with many pink flowers
April 22, 2006

Tamarisk plants can make many flowers

Tamarisk plants have been sucessful in southwestern US river- and stream-side habitats, in part because of its ablity to make many flowers and, therefore, seeds.

High level of streamflow for Lehman Creek fed by snow melt, Lehman Creek, Nevada
June 19, 2005

High streamflow for Lehman Creek fed by snow melt, Lehman Cr., Nevada

Snowmelt runoff: High level of stream flow for Lehman Creek fed by snow melt in the high country, Great Basin National Park, Nevada, USA

Mountain snow fields, and glaciers, to a lesser extent, act as natural reservoirs for water in some areas, such as the western United States and Canada. These semi-permanent ice fields store precipitation from the

...
Image: Wyoming Big Sagebrush Community Near Winnemucca, Nevada
May 11, 2005

Wyoming Big Sagebrush Community Near Winnemucca, Nevada

Mountain big sagebrush - or Artemisia tridentata ssp. vaseyana - is a sub-species of big sagebrush that is found in primarily at higher elevation and colder, drier sites between the Rocky Mountains and the Cascades and Sierra Nevada.

Attribution: Ecosystems
March 4, 2004

PubTalk 3/2004 — Mapping the American West

Clarence King and the 40th Parallel Survey

By James G. Moore, Geologist

  • After completing a geology degree at Yale and coming West in a wagon train, Clarence King worked with the California Geological Survey and was in the field party that discovered Mount Whitney
  • King led the United States Geological Exploration of the
Evaportranspiration equipment along the Tracy Segment, Nevada
April 30, 2003

Evaportranspiration equipment along the Tracey Segment

Evaportranspiration equipment along the Tracey Segment

USGS regional research drill rig near Truckee River, NV
June 9, 2001

USGS regional research drill rig near Truckee River, NV

USGS regional research drill rig constructing sites near the south bank of the Truckee River just downstream of USGS 10350000 Truckee River at Vista. The wells were constructed to investigate surface water groundwater interaction.

Filter Total Items: 144
USGS
December 18, 2014

Secretary of the Interior Sally Jewell announced today that Interior’s Southwest Climate Science Center is awarding nearly a million dollars to universities and other partners for research to guide managers of parks, refuges and other cultural and natural resources in planning how to help species and ecosystems adapt to climate change.

Image:  Desert Perchlorate Field Work
April 3, 2014

Newly published research is the first to characterize the distribution and interactions of natural perchlorate in a terrestrial ecosystem. The study results are important in assessing risks associated with ecological and human health and with potential movement of natural perchlorate contamination into groundwater.

Image: Gary Scoppettone
January 16, 2014

Today, the Department of Interior honored U.S. Geological Survey biologist Gary Scoppettone and his colleagues for helping land managers save two species of fish from extinction. The species of unique desert fish, Cui-ui and Lahontan cutthroat trout, are considered sacred to the Pyramid Lake Paiute Tribe of Nevada.

USGS
December 19, 2013

Secretary of the Interior Sally Jewell announced today that Interior’s Southwest Climate Science Center is awarding nearly $1.2 million to universities and other partners for research to guide managers of parks, refuges and other cultural and natural resources in planning how to help species and ecosystems adapt to climate change.

USGS
December 13, 2013

Drought conditions are linked to declines in a protected desert tortoise population in part of the Sonoran Desert, according to a U.S. Geological Survey study. 

USGS
December 3, 2013

A recent study in Nevada's Carson Valley by the U.S. Geological Survey confirms that septic tanks are contaminating groundwater in the region with concentrations of nitrates, posing human health risks from contaminated drinking water.

USGS
June 27, 2013

When it comes to weekend activities, many people make the tough choice between recreation and spending their time volunteering.  But recently, The Nature Conservancy and the U.S. Geological Survey (USGS) gave a group of local anglers a chance to do both at once.  

USGS
March 13, 2013

Climate factors such as snowpack and precipitation are playing an increasingly important role in the abundance of American pikas in the Great Basin, according to a continuing ecological study by the U.S. Geological Survey, University of Montana and Montana State University.

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.