Due to a lapse in appropriations, the majority of USGS websites may not be up to date and may not reflect current conditions. Websites displaying real-time data, such as Earthquake and Water and information needed for public health and safety will be updated with limited support. Additionally, USGS will not be able to respond to inquiries until appropriations are enacted.  For more information, please see www.doi.gov/shutdown

Regions

Nevada

States L2 Landing Page Tabs

The Pacific Region contains nine science centers across three States—California, Hawaii, and Nevada—and Trust Territories. The headquarters is located in Sacramento, California, where the Regional Director and staff work to further our strategic science direction.

News

photo of grasslands surrounding Winnemucca, Nevada
June 12, 2018

The advent of remote sensing was a boon to the ancient science of phenology.

Satellite data offered a global view of nature’s seasonal life cycles that historical tabulators of budding trees and buzzing bees could scarcely imagine.

From the start, however, remotely sensed phenology has come with caveats.

A wildfire in a forest
September 7, 2017

A growing number of wildfire-burned areas throughout the western United States are expected to increase soil erosion rates within watersheds, causing more sediment to be present in downstream rivers and reservoirs, according to a new study by the U.S. Geological Survey.

Image: Burning Sagebrush
September 6, 2017

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.

Filter Total Items: 60
Screenshot of the Land Treatment Exploration Tool with proposed treatment drawn on screen.
Date Published: May 10, 2018
Status: Active

Land Treatment Exploration Tool

The Land Treatment ExplorationTool provides a practical resource for managers who are planning restoration and rehabilitation actions on public lands. The tool generates a variety of spatial products while being user friendly for all levels of GIS expertise, even to those with little or no experience.

gravity map Mojave Desert
Date Published: May 8, 2018
Status: Active

Rare Earth Element Deposits in the Southeast Mojave Desert

In an effort to better understand domestic resource potential, the USGS is investigating the genetic relationship among three rare earth element deposits in the southeast Mojave Desert: Music Valley (Pinto Mountains, California), Thor (New York Mountains, Nevada), and the world-class rare earth element deposit at Mountain Pass, California. Such a combined study would significantly improve our...

Contacts: David Ponce
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...

Walker River above Weber Reservoir near Schurz, Nev.
Date Published: December 18, 2017
Status: Active

Hydrology of the Walker River Basin

Walker Lake is one of the few perennial, natural terminal lakes in the Great Basin.  The ecosystems and recreational uses of Walker Lake and other terminal lakes in the Great Basin have become at-risk due to consumptive water use. 

Contacts: Kip Allander
Humboldt River, Nevada
Date Published: December 18, 2017

Evaluation of Streamflow Depletion Related to Groundwater Withdrawal, Humboldt River Basin

The Humboldt River Basin (HRB) is the only major river basin that is entirely within the State of Nevada. Precipitation supplies all the water that enters the basin; consequently, the variability in climate has significant impacts on the hydrology of the area.

Contacts: Kip Allander
Flooding at Clear Creek near Carson City, Nevada
Date Published: December 6, 2017
Status: Active

Floods in Nevada

For more than 100 years, the USGS has played a critical role in reducing flood losses by operating a nationwide streamgage network that monitors the water level and flow of the Nation's rivers and streams. Through satellite and computer technology, streamgages transmit real-time information, which the National Weather Service (NWS) uses to issue flood warnings.

Contacts: Steven Berris
Joshua trees burning in the Bulldog Fire in Mojave Desert tortoise habitat of southwestern Utah
Date Published: October 30, 2017
Status: Active

Aridlands Disturbances and Restoration Ecology

Desert landscapes are rapidly changing due to increases in invasive plant species, frequency of wildfires, urban and energy development, recreational use, military training, and climate variation. Dr. Todd Esque, USGS researchers, and collaborators are working together to investigate these changes and provide managers with key information that can be used to manage natural resources more...

Contacts: Todd Esque
Tiny desert tortoise found during a population census
Date Published: October 30, 2017
Status: Active

Desert Tortoise Ecology, Health, Habitat, and Conservation Biology

The desert tortoise is listed as “threatened” under the Endangered Species Act. USGS WERC scientists, along with project partners have been conducting long-term analyses on how changes in the southwestern deserts of the United States can affect desert tortoise populations. Dr. Todd Esque and his team are investigating how habitat disturbances and restoration projects influence tortoise...

Contacts: Todd Esque
Male silky flycatcher (Phainopepla nitens)
Date Published: October 30, 2017
Status: Active

Southwestern Desert Ecology of At-risk Species and their Habitats

The southwestern desert region is home to many sensitive species. Species are at-risk due to past, present, and future changes to the landscape. WERC’s Dr. Todd Esque, field researchers, and collaborators are using models, monitoring plans, and decision-support tools to provide land managers with the resources they need to answer questions about how environmental change influences plants,...

Contacts: Todd Esque
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
Filter Total Items: 40
Web Application
/data-tools/land-treatment-exploration-tool

Land Treatment Exploration Tool

Screenshot of the Land Treatment Exploration Tool with proposed treatment drawn on screen.
May 3, 2018

The Land Treatment Exploration Tool is designed for resource managers to use when planning land treatments. The tool provides useful summaries of environmental characteristics of planned treatment areas and facilitates adaptive management practices by comparing those characteristics to other similar treatments within a specified distance or area of interest.  Provisional Software.

Science Datasets
/data-tools/argon-and-geochemical-data-40ar39ar-geochronology-and-petrogenesis-table-mountain

Argon and geochemical data for: 40Ar/39Ar geochronology and petrogenesis of the Table Mountain Shoshonites, Golden, CO

USGS
January 1, 2018

This dataset accompanies publication '40Ar/39Ar geochronology and petrogenesis of the Table Mountain Shoshonites, Golden, CO', to be published in Rocky Mountain Geology, which analyzed lava flows on North and South Table Mountain in Golden, CO, for argon geochronology and geochemistry.

Science Datasets
/data-tools/groundwater-sites-evaluated-assess-vulnerability-public-supply-wells-increasing-arsenic

Groundwater Sites Evaluated to Assess The Vulnerability of Public Supply Wells To Increasing Arsenic Concentrations In Southeastern Carson Valley, Douglas County, Nevada

Carson Valley, Nevada
November 3, 2017

This data set provides a spatial and temporal assessment of available chemical and physical data from local, county, state, and federal databases for the Carson Valley, near Minden, Nevada. 

Water
/data-tools/national-water-information-system-web-interface-nwisweb-0

National Water Information System web interface (NWISweb)

Application screenshot thumbnail
September 1, 2017

The National Water Information System (NWIS) web application provides access to real-time and historical surface-water, groundwater, water-quality, and water-use data collected at approximately 1.5 million sites across all 50 states.

Web Application
/data-tools/national-water-information-system-nwis-mapper

National Water Information System (NWIS) Mapper

NWIS Mapper screenshot
August 30, 2017

The NWIS mapper provides access to over 1.5 million sites contained in the USGS National Water Information System (NWIS), including sites where current and historical surface-water, groundwater, springs, and atmospheric data has been collected. Users can search by site type, data type, site number, or place.

Science Datasets
/data-tools/sagebrush-mineral-resource-assessment-data-sources

Sagebrush Mineral Resource Assessment Data Sources

Sagebrush MRA map
October 26, 2016

List of USGS information resources used in carrying out the Sagebrush Mineral Resource Assessment in 2016. Portal to an interactive map and OGC WMS service.

Science Datasets
/data-tools/groundwater-level-and-groundwater-level-change-contours-lahontan-valley-shallow-aquifer

Groundwater-level and groundwater-level change contours for the Lahontan Valley shallow aquifer near Fallon, Nevada, 2012

Screen shot of data release for SIR 2016-5045
September 14, 2016

USGS data release of two geospatial datasets from Lahontan Valley near Fallon, NV: contours representing water levels based on depth-to-groundwater measurements made at 98 wells in July 2012 and contours representing water level change in the shallow aquifer (1992-2012) based on depth-to-groundwater measurements made in 73 wells in 1992 and 2012, with limited measurements made in 2013.

GIS Data
/data-tools/groundwater-discharge-area-diamond-valley-flow-system-central-nevada

Groundwater Discharge Area for the Diamond Valley Flow System, Central Nevada

Screen shot of the NSDI node for SIR 2016-5055
July 29, 2016

These data were created as part of a hydrologic study to characterize groundwater budgets and water quality in the Diamond Valley Flow System (DVFS), central Nevada. This dataset represents the groundwater discharge area (GDA) in the DVFS. 

GIS Data
/data-tools/water-level-altitude-contours-diamond-valley-flow-system-central-nevada-2012

Water Level Altitude Contours for the Diamond Valley Flow System, Central Nevada, 2012

Screen shot of NSDI node for SIR 2016-5055
July 29, 2016

These data were created as part of a hydrologic study to characterize groundwater budgets and water quality in the Diamond Valley Flow System (DVFS), central Nevada. This dataset represents 2012 water levels in the DVFS.

GIS Data
/data-tools/irrigated-agricultural-lands-and-other-anthropogenic-land-disturbance-diamond-valley-flow

Irrigated Agricultural Lands and Other Anthropogenic Land Disturbance in the Diamond Valley Flow System, Central Nevada, 2011

Screen shot of NSDI node for SIR 2016-5055
July 29, 2016

These data were created as part of a hydrologic study to characterize groundwater budgets and water quality in the Diamond Valley Flow System (DVFS), central Nevada. This dataset represents 2011 irrigated agricultural lands and associated land disturbances in the DVFS. 

GIS Data
/data-tools/evapotranspiration-units-diamond-valley-flow-system-groundwater-discharge-area-central

Evapotranspiration Units for the Diamond Valley Flow System Groundwater Discharge Area, Central Nevada, 2010

Screen shot of NSDI node for SIR 2015-5055
July 29, 2016

These data were created as part of a hydrologic study to characterize groundwater budgets and water quality in the Diamond Valley Flow System (DVFS), central Nevada. This dataset represents evapotranspiration (ET) units derived from the mean Enhanced Vegetation Index (EVI) calculated from two Landsat 5 Thematic Mapper scenes from the summer of 2010.

GIS Data
/data-tools/summer-mean-enhanced-vegetation-index-diamond-valley-flow-system-groundwater-discharge

Summer Mean Enhanced Vegetation Index for the Diamond Valley Flow System Groundwater Discharge Area, Central Nevada, 2010

Screen shot of NSDI node for SIR 2016-5055
July 29, 2016

These data were created as part of a hydrologic study to characterize groundwater budgets and water quality in the Diamond Valley Flow System (DVFS), central Nevada. This dataset represents the mean Enhanced Vegetation Index (EVI) of two Landsat 5 Thematic Mapper scenes from the summer of 2010 in the DVFS. 

Filter Total Items: 2
CITE
January 10, 2018

Scientists at WERC's Dixon Field station have fitted Cinnamon Teal with GPS backpacks. Using R, the telemetry locations are displayed on an image every two weeks.

Digital Elevation Model in the Atchafalaya Basin, LA
April 19, 2016

The 3DEP products and services available through The National Map consist of standard digital elevation models (DEMs) at various horizontal resolutions, elevation source and associated datasets, an elevation point query service and bulk point query service. All 3DEP products are available, free of charge and without use restrictions.

Filter Total Items: 64
Year Published: 2017

The 2008 Wells, Nevada earthquake sequence: Source constraints using calibrated multiple event relocation and InSAR

The 2008 Wells, NV earthquake represents the largest domestic event in the conterminous U.S. outside of California since the October 1983 Borah Peak earthquake in southern Idaho. We present an improved catalog, magnitude complete to 1.6, of the foreshock-aftershock sequence, supplementing the current U.S. Geological Survey (USGS) Preliminary...

Nealy, Jennifer; Benz, Harley M.; Hayes, Gavin; Berman, Eric; Barnhart, William D.
Nealy, J. L., Benz, H. M., Hayes, G. P., Bergman, E. A., & Barnhart, W. D. (2017). The 2008 Wells, Nevada, Earthquake Sequence: Source Constraints Using Calibrated Multiple‐Event Relocation and InSAR. Bulletin of the Seismological Society of America.

Year Published: 2017

A paleoseismic transect across the northwestern Basin and Range Province, northwestern Nevada and northeastern California, USA

We use new and existing data to compile a record of ∼18 latest Quaternary large-magnitude surface-rupturing earthquakes on 7 fault zones in the northwestern Basin and Range Province of northwestern Nevada and northeastern California. The most recent earthquake on all faults postdates the ca. 18–15 ka last glacial highstand of pluvial Lake Lahontan...

Personius, Stephen; Briggs, Richard; Maharrey, J. Zebulon; Angster, Stephen J.; Mahan, Shannon A.
Personius, Stephen F., Briggs, Richard W., Maharrey, J. Zebulon, Angster, Stephen J., and Mahan, Shannon A., 2017, A Paleoseismic transect across the northwestern Basin and Range Province, northwestern Nevada and northeastern California, USA: Geosphere, v. 13, no. 3, p. 782–810, doi:10.1130/GES01380.1.

Year Published: 2017

Cyanide poisoning of a Cooper’s hawk (Accipiter cooperii)

A Cooper’s hawk (Accipiter cooperii) was found dead in a ditch leading from a heap leach pad at a gold mine in Nevada. Observations at autopsy included an absence of external lesions, traces of subcutaneous and coronary fat, no food in the upper gastrointestinal tract, and no lesions in the viscera. Cyanide concentrations (µg/g ww) were 5.04 in...

Franson, J. Christian

Year Published: 2016

Chemical abrasion-SIMS (CA-SIMS) U-Pb dating of zircon from the late Eocene Caetano caldera, Nevada

Zircon geochronology is a critical tool for establishing geologic ages and time scales of processes in the Earth's crust. However, for zircons compromised by open system behavior, achieving robust dates can be difficult. Chemical abrasion (CA) is a routine step prior to thermal ionization mass spectrometry (TIMS) dating of zircon to remove...

Watts, Kathryn E.; Coble, Matthew A.; Vazquez, Jorge A.; Henry, Christopher D.; Colgan, Joseph P.; John, David A.

Year Published: 2016

Gravity and magnetic studies of the eastern Mojave Desert, California and Nevada

IntroductionFrom May 2011 to August 2014, the U.S. Geological Survey (USGS) collected gravity data at more than 2,300 stations and physical property measurements on more than 640 rock samples from outcrops in the eastern Mojave Desert, California and Nevada. Gravity, magnetic, and physical-property data are used to study and locate regional...

Denton, Kevin M.; Ponce, David A.
Denton, K.M., and Ponce, D.A., 2018, Gravity and magnetic studies of the eastern Mojave Desert, California and Nevada (ver 1.1, August 2018): U.S. Geological Survey Open-File Report 2016-1070, 20 p., https://doi.org/10.3133/ofr20161070.

Year Published: 2016

Historical files from Federal Government mineral exploration-assistance programs, 1950 to 1974

The Defense Minerals Administration (DMA), Defense Minerals Exploration Administration (DMEA), and Office of Minerals Exploration (OME) mineral exploration programs were active over the period 1950–1974. Under these programs, the Federal Government contributed financial assistance in the exploration for certain strategic and critical minerals. The...

Frank, David G.
Frank, D.G., 2016, Historical files from Federal Government mineral exploration-assistance programs, 1950 to 1974: U.S. Geological Survey Data Series 1004, http://dx.doi.org/10.3133/ds1004.

Year Published: 2016

Terrestrial cosmogenic surface exposure dating of glacial and associated landforms in the Ruby Mountains-East Humboldt Range of central Nevada and along the northeastern flank of the Sierra Nevada

Deposits near Lamoille in the Ruby Mountains-East Humboldt Range of central Nevada and at Woodfords on the eastern edge of the Sierra Nevada each record two distinct glacial advances. We compare independent assessments of terrestrial cosmogenic nuclide (TCN) surface exposure ages for glacial deposits that we have determined to those obtained by...

Wesnousky, Steven G.; Briggs, Richard; Caffee, Marc W.; Ryerson, Rick J.; Finkel, Robert C.; Owen, Lewis A.
Wesnousky, S.G., Briggs, R.W., Caffee, M.W., Ryerson, F.J., Finkel, R.C., and Owen, L.A., 2016, Terrestrial cosmogenic surface exposure dating of glacial and associated landforms in the Ruby Mountains-East Humboldt Range of central Nevada and along the northeastern flank of the Sierra Nevada: Geomorphology, v. 268, p. 72-81.

Year Published: 2015

Fish tag recovery from Anaho Island nesting colony, Pyramid Lake, Nevada

In 2001, tags applied to the federally endangered species cui-ui (Chasmistes cujus) to study their population dynamics were discovered strewn throughout the American White Pelican (Pelecanus erythrorhynchos) nesting colony on Anaho Island, Pyramid Lake, Nevada. Cui-ui are endemic to Pyramid Lake, and Anaho Island harbors one of North America’s...

Scoppettone, G. Gary; Fabes, Mark C.; Rissler, Peter H.; Withers, Donna
Scoppettone, G.G., Fabes, M.C., Rissler, P.H., and Withers, Donna, 2016, Fish tag recovery from Anaho Island nesting colony, Pyramid Lake, Nevada: U.S. Geological Survey Open-File Report 2015-1242, 28 p., http://dx.doi.org/10.3133/ofr20151242.

Year Published: 2014

American white pelican predation on Cui-ui in Pyramid Lake, Nevada

Anthropogenic changes to the Pyramid Lake–Truckee River ecosystem in Nevada are suspected to have altered the predator–prey balance between American white pelican Pelecanus erythrorhynchos and Cui-ui Chasmistes cujus. We estimated the loss of the adult Cui-ui population to pelican predation over a 13-year period by netting and tagging...

Scoppettone, Gayton G.; Rissler, Peter H.; Fabes, Mark C.; Withers, Donna
American white pelican predation on Cui-ui in Pyramid Lake, Nevada; 2014; Article; Journal; North American Journal of Fisheries Management; Scoppettone, Gayton Gary; Rissler, Peter H; Fabes, Mark C; Withers, Donna

Year Published: 2013

Distribution and movement of Big Spring spinedace (Lepidomeda mollispinis pratensis) in Condor Canyon, Meadow Valley Wash, Nevada

Big Spring spinedace (Lepidomeda mollispinis pratensis) is a cyprinid whose entire population occurs within a section of Meadow Valley Wash, Nevada. Other spinedace species have suffered population and range declines (one species is extinct). Managers, concerned about the vulnerability of Big Spring spinedace, have considered habitat restoration...

Jezorek, Ian G.; Connolly, Patrick J.
Distribution and movement of Big Spring spinedace (Lepidomeda mollispinis pratensis) in Condor Canyon, Meadow Valley Wash, Nevada; 2013; Article; Journal; Western North American Naturalist; Jezorek, Ian G.; Connolly, Patrick J.

Year Published: 2013

Quaternary extensional growth folding beneath Reno, Nevada, imaged by urban seismic profiling

We characterize shallow subsurface faulting and basin structure along a transect through heavily urbanized Reno, Nevada, with high‐resolution seismic reflection imaging. The 6.8 km of P‐wave data image the subsurface to approximately 800 m depth and delineate two subbasins and basin uplift that are consistent with structure previously inferred...

Stephenson, William J.; Frary, Roxy N.; Louie, John; Odum, Jackson K.
Quaternary extensional growth folding beneath Reno, Nevada, imaged by urban seismic profiling; 2013; Article; Journal; Bulletin of the Seismological Society of America; Stephenson, William J.; Frary, Roxy N.; Louie, John; Odum, Jackson K.

Year Published: 2013

Habitat quality and recruitment success of cui-ui in the Truckee River downstream of Marble Bluff Dam, Pyramid Lake, Nevada

We compared cui-ui (Chasmistes cujus) recruitment from two reaches of the Truckee River with histories of severe erosional downcutting caused by a decline in Pyramid Lake surface elevation. In 1975, Marble Bluff Dam (MBD) was constructed 5 kilometers upstream of the extant mouth of the Truckee River to stabilize the upstream reach of the river;...

Scoppettone, G. Gary; Rissler, Peter H.; Salgado, J. Antonio; Harry, Beverly
Habitat quality and recruitment success of cui-ui in the Truckee River downstream of Marble Bluff Dam, Pyramid Lake, Nevada; 2013; OFR; 2013-1247; Scoppettone, G. Gary; Rissler, Peter H.; Salgado, J. Antonio; Harry, Beverly

Filter Total Items: 42
Image from an application that navigates users through USGS National Oil and Gas Assessment Provinces
November 14, 2018

National Oil and Gas Assessment Provinces

This is a graphic from the USGS National Oil and Gas Assessment Explorer application, which allows user to drill into 70 oil and gas assessment provinces throughout the United States.

A RestoreNet garden with plots covered by white cloth.
August 31, 2018

RestoreNet garden testing seedling establishment.

The RestoreNet gardens test seedlings of priority restoration species across the Southwest. This is a recently installed garden located in the juniper woodlands of the Colorado Plateau. The experiemental network will support land managers by providing insight into various restoration techniques, including testing seedlings vs seeds.

August 29, 2018

Image of the Week - Burning Man

Every year, tens of thousands of people descend upon an unforgiving windswept playa in northwestern Nevada to build a city.

Within months, the city is gone.

Burning Man is named for the wooden effigy set ablaze at the end of the weeklong celebration in the temporary metropolis of Black Rock City.

It all happens on an ancient alkali flat nestled between

...
Satellite image showing reflection of soil.
August 26, 2018

Burning Man's Temporary City

Burning Man is named for the wooden effigy set ablaze at the end of the weeklong celebration in the temporary metropolis of Black Rock City.

Band 7 of Landsat 8’s Operational Land Imager is sensitive to moisture in and above the soil. It makes the silty water that runs through the playa on May 22, 2017 pop in

...
August 17, 2018

Overview of Indirect Measurements - Survey Requirements

This video provides an overview of the different indirect measurement methods used by the USGS, as well as a brief description of what you'll need to survey for each. 
 

July 2, 2018

Survey Requirements for Road Overflow Indirect Measurements

In this video, you will learn what and where to survey for a road overflow or broad-crested weir indirect measurement. 
 

June 20, 2018

Indirect Measurement Field Notes and Metadata

This video describes the notes and other metadata that need to be recorded during indirect measurement surveys.
 

April 23, 2018

Image of the Week - Urban Growth in Las Vegas, Nevada, USA

For over 45 years Landsat has been monitoring the earth. In that time Las Vegas, Nevada has seen incredible urban growth, as documented in images like these.

At the USGS EROS Center, we study land change, operate the Landsat satellites, and maintain the longest, continuously acquired collection of images of the Earth's land surface.

USGS EROS Center (

...
Satellite image showing the growth of Las Vegas.
April 11, 2018

Urban Growth in Las Vegas, Nevada, USA

Decades of consistent data from Landsat help scientists monitor the growth of urban areas in a world where more than half of the population lives in cities. For example, Las Vegas, Nevada, one of the fastest growing metropolitan areas in the United States, has seen its population expand from 273,000 in 1972 to 2,204,

...
February 27, 2018

Survey Requirements - Road Overflow/Broad-Crested Weir

This video describes how and where to flag high water marks for a road overflow or broad-crested weir indirect measurement of peak discharge. 
 

Gray metal box standing next to a river with a sign in green and black writing
December 31, 2017

USGS Streamgaging Station in northern Nevada.

USGS Streamgaging Station in northern Nevada. 

Woman standing in middle of stream next to instruments
December 31, 2017

Measuring streamflow in northern Nevada.

USGS technician measuring streamflow in northern Nevada.

Filter Total Items: 106
photo of grasslands surrounding Winnemucca, Nevada
June 12, 2018

The advent of remote sensing was a boon to the ancient science of phenology.

Satellite data offered a global view of nature’s seasonal life cycles that historical tabulators of budding trees and buzzing bees could scarcely imagine.

From the start, however, remotely sensed phenology has come with caveats.

A wildfire in a forest
September 7, 2017

A growing number of wildfire-burned areas throughout the western United States are expected to increase soil erosion rates within watersheds, causing more sediment to be present in downstream rivers and reservoirs, according to a new study by the U.S. Geological Survey.

Image: Burning Sagebrush
September 6, 2017

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.

Image shows a geologic map of the Lower 48
August 21, 2017

A carbonatite here, a glacial moraine there, a zig-zagging fault or two, even a behemoth of a batholith. The geology of the 50 States is an enormous patchwork of varied forms, beautiful in their variance but challenging to present as a single map.

USGS science for a changing world
August 14, 2017

The U.S. Geological Survey awarded approximately $4.9 million this week to six universities and a university-governed non-profit, to support transitioning the west coast “ShakeAlert” earthquake early warning system into a production system.

Image shows a color-based map of the various magnetic readings of the Great Basin
May 3, 2017

Vast mineral wealth has been discovered in the Great Basin since the 1800s. As each new generation of prospectors and geologists brings their cutting-edge tools with them, the arid ridgelines of the desert Southwest have shown more and more potential.

Walker Lake on a Spring day
April 24, 2017

USGS model simulations suggest that Walker Lake will rise by as much as 15 to 18 feet this year, the most in a single year in recorded history.

Image shows a map of U.S. states colored based on the value of their mineral industry
April 14, 2017

In 2016, these five states led the pack in mineral production, accounting for about one third of the total mineral production value for the entire country.

Lake Mead
March 15, 2017

The Colorado River system provides about 35 million Americans with a portion of their water supply. It irrigates 5½ million acres of land in the West and provides water to tribes, parks, and wildlife. The system serves parts of seven States and Mexico—but reservoir levels have crept lower over the past several years, sparking questions about how much water remains and who will have access.

Large waves crashing on rocks at beach.
February 22, 2017

Atmospheric rivers are a global weather phenomenon that can bring large amounts of rain or snow to the U.S. West Coast each year. These rivers of wet air form over the Pacific Ocean near Hawaiʻi and pick up large amounts of moisture from the tropics and on their way to the West Coast. This moisture is carried in narrow bands across the Pacific Ocean to California, Oregon, Washington and Nevada.

Photo of a young girl drinking water, which likely originated from groundwater sources. 
January 19, 2017

A regional assessment of untreated groundwater in the Basin and Range basin-fill aquifers, which include parts of Nevada, California, Arizona, Utah and adjacent states, is now available from the U.S. Geological Survey.

Acoustic Doppler Current Profiler
January 12, 2017

You are invited to join USGS scientists and field technician crews as they collect discharge measurements in rainfall-affected areas.

Filter Total Items: 23