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.

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Filter Total Items: 74
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
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
Date published: October 11, 2017
Status: Active

Drought in Nevada

Ongoing drought, in Nevada and across the West, will require scientists to develop new ideas and techniques for measuring, monitoring, modeling, and managing water resources. NVWSC has the capabilities to meet these challenges with our extensive scientific expertise in data collection, modeling, and research. We also are creating new ways to provide data to the public and stakeholders through...

Date published: September 20, 2017
Status: Active

Land Treatment Digital Library

The LTDL was created by the U.S. Geological Survey (USGS) to catalog information about land treatments on Federal lands in the western United States for all interested parties. The flexible framework of the library allows for the storage of a wide variety of data in different formats. The LTDL currently stores previously established land treatments or what often are called legacy data. The...

Date published: August 8, 2017

Potential Effects of Changing Climate Patterns on Subalpine Lakes in Great Basin National Park

Great Basin National Park (GRBA), in White Pine County, Nev., has six small subalpine lakes. These lakes are a priority resource for park managers due to their pristine condition and high visitation. The only trout species native to these lakes is the Bonneville cutthroat trout (BCT). In the late 1990s, GRBA began a BCT reintroduction program. The success of this program was one of the major...

Contacts: Geoff Moret
Date published: August 5, 2017
Status: Active

RestoreNet: Distributed Field Trial Network for Dryland Restoration

U.S. Geological Survey (USGS) researchers and land managers are co-producing a network of restoration field trial sites on DOI and surrounding lands in the southwestern U.S. The network systematically tests restoration treatments across a broad range of landscape, soil, and climate conditions. Each site in the network is used to test suitable seed mixes and treatments that promote plant...

Contacts: Seth Munson, Molly McCormick, Katie Laushman, Rebecca Mann, Mike Duniway, Ph.D., Brad Butterfield, Elise Gornish, Loralee Larios, Akasha Faist, Helen Rowe, Christopher Lortie, Caroline A. Havrilla
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...

Date published: June 27, 2017
Status: Active

Measurements of Stream Discharge and Analysis of Surface Water/Groundwater Interactions in Las Vegas Wash, Las Vegas, NV

The Black Mountain Industrial (BMI) complex, in Henderson, Nevada, has been the site of industrial chemical production since 1942. Perchlorate contaminants, from activities at BMI, have moved through the groundwater system and have been discovered in the Las Vegas Wash, prompting water resource investigations and groundwater treatment by the Nevada Division of Environmental Protection (NDEP)....

Contacts: Jon Wilson
Date published: June 26, 2017
Status: Completed

Evaluation of Black Rock Desert National Conservation Area

Minimal hydrologic data are available for the Black Rock National Conservation Area (BRNCA). USGS scientists collected baseline spring flow, groundwater level, and precipitation data to support concurrent ecological studies of perennial springs in the BRNCA by the Desert Research Institute.  The collection of baseline hydrologic data is the initial step for determining how ecosystems in the...

Contacts: David W Smith
Date published: June 26, 2017
Status: Active

Water for the Seasons

Water for the Seasons (WftS) is a four year study funded by the National Science Foundation and the U.S. Department of Agriculture. WtfS uses the Truckee-Carson River System (TCRS) as a pilot study to learn how to best link science with decision-making in snow-fed arid-land...

Date published: June 8, 2017
Status: Active

Evaluation of Groundwater Flow in the Middle Carson River Basin, Eagle, Dayton, and Churchill Valleys, Nevada

Demand for water resources in the Carson River basin is increasing due to steady population growth and the resulting development and changes in land and water use throughout the middle part of the basin.  Agricultural land is being urbanized while land not previously irrigated may be converted for agricultural use.  

Contacts: Eric Morway
Date published: June 5, 2017
Status: Active

Amargosa Integrated Monitoring Network

The National Park Service, Nye County, U.S. Fish and Wildlife Service, and USGS Nevada Water Science Center (NVWSC) have established a water-level and spring discharge monitoring network in the southern Amargosa Desert to identify long-term trends and monitor potential impacts of activities on groundwater resources. The Amargosa Integrated Monitoring Network (AIMN) continues the long-term...

Contacts: Jon Wilson
Filter Total Items: 63
Date published: October 26, 2016

Locatable Mineral Assessment Tracts for the U.S. Geological Survey Sagebrush Mineral-Resource Assessment Project

The polygon (vector) feature class represents locatable mineral resource assessment tracts (tracts of land) associated with the Department of the Interior (DOI) Sagebrush Focal Areas (SFAs) in Montana, Wyoming and Utah, central Idaho, and the Oregon-Nevada-Idaho border area. The mineral-resources tracts are geographic areas that were assessed by the USGS and were determined

Date published: September 28, 2016

USMIN Mineral-Resource Data for the U.S. Geological Survey Sagebrush Mineral-Resource Assessment Project

The point and polygon layers within this geodatabase represent locations of mineral occurrences, mines, mining and mineral districts and sites of active mineral exploration within or near the Department of the Interior (DOI) Sagebrush Focal Areas in Montana, Wyoming and Utah, central Idaho, and the Oregon-Nevada-Idaho border area. The data were compiled by the U.S. Geological Survey

Date published: September 14, 2016

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

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.

Date published: August 4, 2016

Prospect- and Mine-Related Features from U.S. Geological Survey 7.5- and 15-Minute Topographic Quadrangle Maps of the Western United States

These data are part of a larger USGS project to develop an updated geospatial database of mines, mineral deposits and mineral regions in the United States. Mine and prospect-related symbols, such as those used to represent prospect pits, mines, adits, dumps, tailings, etc., hereafter referred to as “mine” symbols or features, are currently being digitized on a st

Date published: July 29, 2016

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

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. 

Date published: July 29, 2016

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

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.

Date published: July 29, 2016

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

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. 

Date published: July 29, 2016

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

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.

Date published: July 29, 2016

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

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. 

Date published: July 29, 2016

Groundwater discharge area for Diamond Valley, Central Nevada, 1968

This dataset represents "phreatophyte areas" mapped as part of an analysis of irrigation pumping in Diamond Valley, Nevada published in 1968. The data were digitized for comparison with mapping of groundwater discharge areas done in 2011 as part of a groundwater study in these valleys published in 2016.

Date published: July 29, 2016

Bureau of Land Management's Land and Mineral Legacy Rehost System (LR2000) mineral use cases for the Sagebrush Mineral-Resource Assessment, Idaho, Montana, Nevada, Oregon, Utah, and Wyoming

In 2015, approximately 10 million acres of Federal lands across six western states were proposed for withdrawal from mineral entry by the Bureau of Land Management (BLM) in order to conserve habitat critical for the greater sage-grouse. As a result, the U.S. Geological Survey (USGS) launched the Sagebrush Mineral-Resource Assessment (SaMiRA) project in late-2015 to provide BLM wit

Date published: April 20, 2016

Structures Data

USGS data portray selected structures data, including the location and characteristics of manmade facilities. Characteristics consist of a structure's physical form (footprint), function, name, location, and detailed information about the structure. The types of structures collected are largely determined by the needs of the disaster planning and response and homeland security organizations....

Filter Total Items: 102
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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.

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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

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Year Published: 2013

Seventy-five years of science—The U.S. Geological Survey’s Western Fisheries Research Center

As of January 2010, 75 years have elapsed since Dr. Frederic Fish initiated the pioneering research program that would evolve into today’s Western Fisheries Research Center (WFRC). Fish began his research working alone in the basement of the recently opened Fisheries Biological Laboratory on Lake Union in Seattle, Washington. WFRC’s research began...

Wedemeyer, Gary A.
Seventy-five years of science—The U.S. Geological Survey’s Western Fisheries Research Center; 2013; GIP; 149; Wedemeyer, Gary A.

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Year Published: 2013

An ecohydraulic model to identify and monitor moapa dace habitat

Moapa dace (Moapa coriacea) is a critically endangered thermophilic minnow native to the Muddy River ecosystem in southeastern Nevada, USA. Restricted to temperatures between 26.0 and 32.0°C, these fish are constrained to the upper two km of the Muddy River and several small tributaries fed by warm springs. Habitat alterations, nonnative species...

Hatten, James R.; Batt, Thomas R.; Scoppettone, Gayton G.; Dixon, Christopher J.
An ecohydraulic model to identify and monitor moapa dace habitat; 2013; Article; Journal; PLoS ONE; Hatten, James R; Batt, Thomas R.; Scoppettone, Gayton G; Dixon, Christopher J.

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Year Published: 2013

Late quaternary slip-rate variations along the Warm Springs Valley fault system, northern Walker Lane, California-Nevada border

The extent to which faults exhibit temporally varying slip rates has important consequences for models of fault mechanics and probabilistic seismic hazard. Here, we explore the temporal behavior of the dextral‐slip Warm Springs Valley fault system, which is part of a network of closely spaced (10–20 km) faults in the northern Walker Lane (...

Gold, Ryan; dePolo, Craig; Briggs, Richard W.; Crone, Anthony; Goss, John

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Year Published: 2013

Information to support to monitoring and habitat restoration on Ash Meadows National Wildlife Refuge

The Ash Meadows National Wildlife Refuge staff focuses on improving habitat for the highest incidence of endemic species for an area of its size in the continental United States. Attempts are being made to restore habitat to some semblance of its pre-anthropogenic undisturbed condition, and to provide habitat conditions to which native plant and...

Scoppettone, G. Gary
Information to support to monitoring and habitat restoration on Ash Meadows National Wildlife Refuge; 2013; OFR; 2013-1022; Scoppettone, G. Gary

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Year Published: 2012

Cui-ui reproductive success from potential egg deposition to larval emigration

From 1985 to 2006, we tracked cui-ui, Chasmistes cujus, survival from potential egg deposition of migrating spawners to emigrating larvae. Tahoe sucker larvae emigrated to Pyramid Lake the same time as cui-ui larvae, but cui-ui was the predominant catostomid larvae we captured. Survival of cui-ui larvae ranged from 0.46% to 21.17%, declining...

Scoppettone, G. Gary; Rissler, Peter H.

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Year Published: 2012

Effect of brook trout removal from a spawning stream on an adfluvial population of Lahontan cutthroat trout

Independence Lake (Nevada and Sierra counties, California) harbors the only extant native population of Lahontan cutthroat trout Oncorhynchus clarkii henshawi in the Truckee River system and one of two extant adfluvial populations in the Lahontan basin. The persistence of this population has been precarious for more than 50 years, with spawning...

Scoppettone, G. Gary; Rissler, Peter H.; Shea, Sean P.; Somer, William
Effect of brook trout removal from a spawning stream on an adfluvial population of Lahontan cutthroat trout; 2012; Article; Journal; North American Journal of Fisheries Management; Scoppettone, G. Gary; Rissler, Peter H.; Shea, Sean P.; Somer, William

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Year Published: 2012

Relative abundance and distribution of fishes and crayfish at Ash Meadows National Wildlife Refuge, Nye County, Nevada, 2010-11

Introduction Ash Meadows National Wildlife Refuge (AMNWR) was established by the U.S. Fish and Wildlife Service (with the assistance of The Nature Conservancy) in 1984 to protect one of the highest concentrations of endemic flora and fauna in North America (Pister, 1985; Sada, 1990). Prior to federal acquisition, Ash Meadows had been...

Scoppettone, G.G.; Johnson, D.M.; Hereford, M.E.; Rissler, Peter; Fabes, Mark; Salgado, Antonio; Shea, Sean

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Year Published: 2011

Recent faulting in western Nevada revealed by multi-scale seismic reflection

The main goal of this study is to compare different reflection methods used to image subsurface structure within different physical environments in western Nevada. With all the methods employed, the primary goal is fault imaging for structural information toward geothermal exploration and seismic hazard estimation. We use seismic CHIRP (a swept-...

Frary, Roxanna N.; Louie, John N.; Stephenson, William J.; Odum, Jackson K.; Kell, Annie; Eisses, Amy; Kent, Graham M.; Driscoll, Neal W.; Karlin, Robert; Baskin, Robert L.; Pullammanappallil, Satish; Liberty, Lee M.
Recent faulting in western Nevada revealed by multi-scale seismic reflection; 2011; Article; Journal; SEG Technical Program Expanded Abstracts; Frary, Roxanna N.; Louie, John N.; Stephenson, William J.; Odum, Jackson K.; Kell, Annie ; Eisses, Amy ; Kent, Graham M.; Driscoll, Neal W.; Karlin, Robert ; Baskin, Robert L.; Pullammanappallil, Satish ; Liberty, Lee M.

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Year Published: 2011

Survival and tag loss in Moapa White River springfish implanted with passive integrated transponder tags

We monitored survival and tag loss among Moapa White River springfish Crenichthys baileyi moapae that were surgically implanted with passive integrated transponder (PIT; 9 × 2 mm) tags. The fish used in the study ranged from 40 to 67 mm in total length and from 1.0 to 6.5 g in mass; the PIT tag: body weight ratios were 1.0–6.1%. Fish were held for...

Dixon, Christopher J.; Mesa, Matthew G.
Survival and tag loss in Moapa White River springfish implanted with passive integrated transponder tags; 2011; Article; Journal; Transactions of the American Fisheries Society; Dixon, Christopher J.; Mesa, Matthew G.

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Year Published: 2011

Movement of bull trout in the upper Jarbidge River watershed, Idaho and Nevada, 2008-09--A supplement to Open-File Report 2010-1033

We monitored bull trout (Salvelinus confluentus) in 2008 and 2009 as a continuation of our work in 2006 and 2007, which involved the tagging of 1,536 bull trout with passive integrated transponder (PIT) tags in the East Fork Jarbidge River and West Fork Jarbidge River and their tributaries in northeastern Nevada and southern Idaho. We installed...

Munz, Carrie S.; Allen, M. Brady; Connolly, Patrick J.

Filter Total Items: 110
July 2, 2019

Survey Requirements for Culvert Indirect Measurements - Culvert Survey

This video describes the survey requirements for culvert indirect measurements, specifically how to measure various aspects of the culvert itself. This video provides a general overview of how to survey culvert attributes, such as the invert and length.
 

June 30, 2019

Survey Requirements for Non-Standard Culverts

This video discusses how to measure various aspects of non-standard culverts, such as mitered culverts. Using the slope-area method inside a culvert is also discussed. 
 

June 30, 2019

Surveying Indirect Measurements with GNSS

This video details how to survey indirect measurements with GNSS. Both RTN and RTK setups are discussed, along with tips and tricks and troubleshooting.
 

June 25, 2019

Survey Requirements for Culvert Indirect Measurements - Overview

This video describes the survey requirements for culvert indirect measurements, including high-water mark and cross-section locations. 
 

June 24, 2019

Survey Requirements for Pipe Culverts

This video demonstrates how to measure various aspects of pipe and pipe-arch culverts for culvert indirect measurements. The video includes tips and tricks for measuring the geometry, corrugations, and entrance types including rounded or beveled entrances.
 

June 21, 2019

Surveying Slope-Conveyance Indirect Measurement

This video shows how to survey a slope-conveyance indirect measurement using a conventional optical or digital level. 
 

June 21, 2019

Site Selection for Indirect Discharge Measurements

This video demonstrates how to select an appropriate location for an indirect measurement. Theory and initial reconnaissance are discussed. 

June 20, 2019

Survey Requirements for Box Culverts

This video details how to measure various aspects of a box culvert for a culvert indirect measurement. The video includes tips and tricks for measuring the geometry, wingwall angles, and entrance types including rounded or beveled entrances.
 

June 12, 2019

Introduction to the Slope-Conveyance Method

This video provides an introduction to the slope-conveyance method of indirect measurement. Theory and background are described as well as high-water mark and cross-section placement. 
 

April 15, 2019

Observing Sierra Nevada Mountain Snowpack 2000-2019 with Terra MODIS

The Moderate Resolution Imaging Spectroradiometer (MODIS) sensor is located aboard NASA’s Terra and Aqua satellites. These data are crucial for studying changes that have occurred on the surface of the Earth, including during times of drought.

This video uses images produced from Terra MODIS Surface Reflectance data over the Sierra Nevada Mountain Range to show

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.

Filter Total Items: 143
TNMCorps Mapping Challenge: City/Town Halls in CA & NV
January 21, 2021

Volunteers continue to make headway on this challenge with another 40 points added since last week.  However, there are a handful of communities in the metropolitan areas that still need a point. See our spatial analyses for tips on which communities these may be. 

TNMCorps Mapping Challenge: City/Town Halls in CA & NV
January 14, 2021

Volunteers jumped in feet first with almost 30 new points added since last week. That's pretty good, considering volunteers need to sift through what's already on the map versus what still needs to be collected.  Keep up the good work!!  

TNMCorps Mapping Challenge: City/Town Halls in CA & NV NEW
January 7, 2021

TNMCorps Mapping Challenges shift to the Pacific Coast with a new challenge for city/town halls in California and Nevada. Just in time to help fend off those winter blues, too!

Image shows a photograph of Walker Lane, a region in Western Nevada
September 17, 2020

A multiagency partnership led by the USGS and the Department of Energy seeks to shed light on lithium and other critical mineral resource potential as well as geothermal energy potential in western Nevada

Image shows a geologic map of Nevada
September 16, 2020

In a joint blog post hosted by the Department of Energy's Office of Energy Efficiency and Rewenable Energy, DOE EERE Assistant Secretary Dan Simmons and Department of the Interior Assistant Secretary for Water and Science Tim Petty announce a new partnership for geothermal energy and critical mineral research in western Nevada.

Scottys Castle
September 3, 2020

The Nevada Water Science Center is pleased to announce an exciting career opportunity: We are seeking a Field Office Chief for the Southern Nevada Networks Unit in Henderson, Nevada.  The position is being advertised as a Supervisory Hydrologic Technician GS-12, and a relocation incentive is being offered.   

Periphyton and nearshore groundwater sampling locations.
August 25, 2020

The USGS Nevada and California Water Science Centers participate in annual Lake Tahoe Summit

Dragonfly larvae being held in an open hand
July 21, 2020

A team of federal, academic, and NGO researchers conducted a national-scale assessment of mercury bioaccumulation in aquatic ecosystems using dragonfly larvae as biosentinels.

Satellite imagery of the December 2019 low flying survey looking at geology, hydrology and natural resources of the region
December 5, 2019

For about two months, starting around December 7, 2019, an airplane operated under contract to the USGS will be making low-level flights over parts of the eastern Mojave Desert.

aerial view of road damage after the Ridgecrest, CA earthquake
October 15, 2019

Effects from the two July 2019 Ridgecrest, CA earthquakes were observed in several USGS continuous groundwater-level monitoring sites in California, Nevada, and Arizona.

A huge canyon surrounded by deep-set cliffs opens to reveal a sunny gorge and part of the Colorado River.
April 11, 2019

A new study shows that mysterious cycles in salinity in the lower Colorado River are a result of precipitation patterns in the headwaters of the upper basin more than a thousand river miles away. The salinity levels generally repeat about every 10 years.