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: February 26, 2019
Status: Completed

2017 Pacific Winter Floods

Learn more about USGS flood activities related to the 2017 Pacific Winter Floods caused by widespread rains across California and western Nevada.

Date published: November 19, 2018
Status: Active

Eastern Great Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas potential of the Eastern Great Basin Province of eastern Nevada, western Utah, southeastern Idaho, and northwestern Arizona 5019.

     

    Date published: August 1, 2018
    Status: Completed

    Magmatic-Tectonic History and Component Sources of Major Precious Metal Deposits in the Tonopah, Goldfield, and Comstock Lode Districts, NV

    Project objectives are refinement of stratigraphy, structure, and magmatic-hydrothermal evolution of the Tonopah, Goldfield, and Comstock Lode districts, and determination of the sources of hydrothermal mineral components. Results are expected to  include refined geologic and tectonic maps of important districts in the Walker Lane, reduced uncertainty in sources of elements in ore deposits,...

    Date published: May 10, 2018
    Status: Active

    Land Treatment Exploration Tool

    The Land Treatment Exploration Tool 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.

    Date published: May 8, 2018
    Status: Completed

    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 between rare earth element deposits at Mountain Pass, California and Music Valley (Pinto Mountains, California) and extend these studies across a 130-km long belt of alkaline Proterozoic rocks in the southeast Mojave Desert. Such a combined study would significantly improve our...

    Contacts: David Ponce
    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
    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
    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: Megan Poff
    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
    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
    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
    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
    Filter Total Items: 63
    Date published: January 1, 2019

    Annual streamflow, runoff and baseflow, estimated for the period of record using six hydrograph-separation methods, for 312 gaged basins in the Northwest Volcanic Aquifer Study Area, USA, 1904-2015.

    The U.S. Geological Survey’s Water Availability and Use Study Program (WAUSP) (https://water.usgs.gov/ogw/gwrp/activities/regional.html) supports quantitative assessments of groundwater availability in areas of critical importance. As part of a WAUSP study in the arid to semi-arid Northwest Volcanic Aquifer Study Area (...

    Date published: November 29, 2018

    Downloadable Data for Eastern Great Basin Oil and Gas Assessments

    Downloadable Data for Eastern Great Basin Oil and Gas Assessments

    Date published: August 28, 2018

    USGS Domestic Continuous (Unconventional) Oil & Gas Assessments, 2000-Present

    Interactively explore assessment summary information for continuous (unconventional) assessments conducted at the USGS from 2000-2018. The assessment results data used to generate this visualization can be downloaded here in Excel Format.  These data represent all assessment results...

    Date published: May 23, 2018

    40Ar/39Ar geochronology of the Tonopah, Divide, and Goldfield districts, Nevada

    Ar/Ar data are reported from minerals and rocks that were collected as part of a mineral resource investigation of the Tonopah, Divide, and Goldfield districts in Nevada. Data are reported from 92 samples and associated standards from eight separate neutron irradiations in the Denver USGS TRIGA reactor, including separated mineral grains and whole rocks. Data were collected by infrared

    Date published: May 3, 2018

    Land Treatment Exploration Tool

    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. ...

    Date published: February 15, 2018

    Mines, Mineral Occurrences, and Mining Districts in the Carlin Area, Nevada

    Sediment hosted gold deposits in Nevada were first mined in the 1960s from open pit mines with large tonnage and low grade resources. Since that time, continuing exploration and discovery have identified extraordinary resources, and together these deposits now form the second-largest gold endowment on Earth, surpassed only by the Witwatersrand Gold Fields of South Africa. The data herein ar...

    Date published: January 18, 2018

    Reanalysis of Selected Archived NURE-HSSR Sediment and Soil Samples from Arizona, California, Idaho, Montana, Nevada, New Mexico, and Utah

    Beginning in November of 2015, the U.S. Geological Survey (USGS) undertook a project to reanalyze approximately 60,000 archived sample splits collected as part of the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) project from selected areas in Arizona, California, Idaho, Montana, Nevada, New Mexico, and Utah. A s

    Date published: November 3, 2017

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

    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. 

    Date published: September 1, 2017

    National Water Information System web interface (NWISweb)

    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.

    Date published: June 27, 2017

    Fluid Inclusion Noble Gas Data from Goldfield and Tonopah Epithermal Au-Ag Deposits

    Twenty-five ore and gangue mineral separates from the Miocene-age Goldfield and Tonopah epithermal Au-Ag deposits in southwestern Nevada were analyzed to determine the helium, neon, and argon (He, Ne, and Ar) isotopic compositions contained in fluid inclusions. Four mineral separates from the Butte Main Stage vein deposit and two from the Bingham pyrite-enargite vein deposits were als

    Date published: January 1, 2017

    Digital map of hydrothermal alteration type, key mineral groups, and green vegetation of the northwestern United States derived from automated analysis of ASTER satellite data

    Mineral groups identified through automated analysis of remote sensing data acquired by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) were used to generate a map showing the type and spatial distribution of hydrothermal alteration, other exposed mineral groups, and green vegetation across the northwestern conterminous United States. Boolean algebra was used to

    Date published: October 26, 2016

    Sagebrush Mineral Resource Assessment Data Sources

    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.

    Filter Total Items: 102
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    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.

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    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.

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    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.

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    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 W.; 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.

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    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.

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    Year Published: 2015

    Population dynamics of the Cui-ui of Pyramid Lake, Nevada: A Potamodromous catostomid subject to failed reproduction

    Fishes of the Truckee River basin (California and Nevada) evolved in an aquatic system that has been episodically diminished by extended drought. For potamodromous species, such as the endangered Cui-ui endemic to Pyramid Lake, Nevada, prehistoric episodic severe drought presumably led to periods of failed reproduction due to restricted access to...

    Scoppettone, Gayton G.; Rissler, Peter H.; Fabes, Mark C.; Shea, Sean P.
    Scoppettone, G.G., P.H. Rissler, M.C. Fabes, and S.P. Shea. 2015. Population dynamics of the cui-ui of Pyramid Lake, Nevada: a potamodromous catostomid subject to failed reproduction. N. Am. J. Fish. Manage. 35(5): 853-864.

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    Year Published: 2015

    A stochastic population model to evaluate Moapa dace (Moapa coriacea) population growth under alternative management scenarios

    The primary goal of this research project was to evaluate the response of Moapa dace (Moapa coriacea) to the potential effects of changes in the amount of available habitat due to human influences such as ground water pumping, barriers to movement, and extirpation of Moapa dace from the mainstem Muddy River. To understand how these factors affect...

    Perry, Russell W.; Jones, Edward; Scoppettone, G. Gary
    Perry, R.W., Jones, E.C., and Scoppettone, G.G., 2015, A stochastic population model to evaluate Moapa dace (Moapa coriacea) population growth under alternative management scenarios: U.S. Geological Survey Open-File Report 2015-1126, 46 p., http://dx.doi.org/10.3133/ofr20151126.

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    Year Published: 2015

    Geochronology of Cenozoic rocks in the Bodie Hills, California and Nevada

    The purpose of this report is to present geochronologic data for unaltered volcanic rocks, hydrothermally altered volcanic rocks, and mineral deposits of the Miocene Bodie Hills and Pliocene to Pleistocene Aurora volcanic fields of east-central California and west-central Nevada. Most of the data presented here were derived from samples collected...

    Fleck, Robert J.; du Bray, Edward A.; John, David A.; Vikre, Peter G.; Cosca, Michael A.; Snee, Lawrence W.; Box, Stephen E.
    Fleck, R.J., du Bray, E.A., John, D.A., Vikre, P.G., Cosca, M.A., Snee, L.W., and Box, S.E., 2015, Geochronology of Cenozoic rocks in the Bodie Hills, California and Nevada: U.S. Geological Survey Data Series 916, 26 p., http://dx.doi.org/10.3133/ds916.

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    Year Published: 2015

    Geologic map of the Bodie Hills, California and Nevada

    The Bodie Hills covers about 1,200 km2 straddling the California-Nevada state boundary just north of Mono Lake in the western part of the Basin and Range Province, about 20 km east of the central Sierra Nevada. The area is mostly underlain by the partly overlapping, middle to late Miocene Bodie Hills volcanic field and Pliocene to late...

    John, David A.; du Bray, Edward A.; Box, Stephen E.; Vikre, Peter G.; Rytuba, James J.; Fleck, Robert J.; Moring, Barry C.
    John, D.A., du Bray, E.A., Box, S.E., Vikre, P.G., Rytuba, J.J., Fleck, R.J., and Moring, B.C., 2015, Geologic map of the Bodie Hills, California and Nevada: U.S. Geological Survey Scientific Investigations Map 3318, 64 p., 2 sheets, scale 1:50,000, http://dx.doi.org/10.3133/sim3318.

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    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

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    Year Published: 2014

    ARkStorm@Tahoe: Stakeholder perspectives on vulnerabilities and preparedness for an extreme storm event in the greater Lake Tahoe, Reno, and Carson City region

    Atmospheric rivers (ARs) are strongly linked to extreme winter precipitation events in the Western U.S., accounting for 80 percent of extreme floods in the Sierra Nevada and surrounding lowlands. In 2010, the U.S. Geological Survey developed the ARkStorm extreme storm scenario for California to quantify risks from extreme winter storms and to...

    Albano, Christine M.; Cox, Dale A.; Dettinger, Michael D.; Shaller, Kevin; Welborn, Toby L.; McCarthy, Maureen
    Albano, C., Cox, D.A., Dettinger, M.D., McCarthy, M., Schaller, K., and Wellborn, T., 2014, ARkStorm@Tahoe--Stakeholder perspectives on vulnerabilities and preparedness for an extreme storm event in the greater Lake Tahoe, Reno, and Carson City region: University of Nevada Cooperative Extension Special Publication-14-16, 43 p. http://environment.unr.edu/publications/ARkStorm_Final_web.pdf

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    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.

    Filter Total Items: 111
    June 11, 2020

    Land Treatment Exploration Tool—Step 1: Describe Proposed Treatment

    This video describes Step 1 of the Land Treatment Exploration Tool. In Step 1 the user defines a name, the planned treatment/s, and a file name for exported items.

    These tutorial videos were created to aid in the use of the Land Treatment Exploration Tool (LTET). These videos guide a user through the main steps of the tool.

    June 11, 2020

    Land Treatment Exploration Tool — Step 2: Select Treatment Boundary

    This video describes Step 2 of the Land Treatment Exploration Tool. In Step 2 the user defines their planned treatment boundary. The user can load a zipped shapefile or on-screen digitize their boundary.  

    These tutorial videos were created to aid in the use of the Land Treatment Exploration Tool (LTET). These videos guide a

    June 11, 2020

    Land Treatment Exploration Tool — Step 3: Explore Site Characteristics

    This video describes Step 3 of the Land Treatment Exploration Tool. In Step 3 the user is guided to the Site History tab to explore land treatment and wildfire history of their planned treatment area. They are also directed to the Fish and Wildfire Information for Planning and Consultation tool to investigate areas of overlap with endangered species, migratory birds, and

    June 11, 2020

    Land Treatment Exploration Tool— Step 4: Prop. Treatment Area & Report

    This video describes Step 4 and the developing report of the Land Treatment Exploration Tool. In Step 4 the used selects layers to generate spatial overlap statistics with their planned treatment boundary. Summary tables are generated and displayed in the Report tab, where a user can create a PDF Site Characterization Report for their planned treatment boundary. Optionally

    June 11, 2020

    Land Treatment Exploration Tool — Step 5: Select Search Parameters

    This video describes Step 5 of the Land Treatment Exploration Tool. In Step 5 the user determines a distance or boundary to search for legacy Land Treatment Digital Library records. The user also indicates if the returned LTDL treatments are statistically evaluated against the planned treatment boundary using a Bray-Curtis Dissimilarity calculation.

    These tutorial

    June 11, 2020

    Land Treatment Exploration Tool — Step 6: Compare the LTDL Treatments

    This video describes Step 6 of the Land Treatment Exploration Tool. In Step 6 the user filters through the returned list of legacy LTDL treatments to identify records that contain useful information or context for the current planned treatment boundary. Selected treatments are added to the developing report and subsequent exported Site Characterization PDFs.  

    These

    person kneeling on stream bank surrounded by sampling equipment
    September 5, 2019

    collecting eDNA samples

    A USGS Hydrologic Technician collects eDNA samples alongside a stream in the Nevada wilderness

    July 29, 2019

    Surveying High-Water Marks and Cross-Sections for Indirects

    This video describes how to survey high-water marks and cross-sections for indirect measurements. Included are tips and tricks for getting across non-wadeable sections of the stream.
     

    July 29, 2019

    Selection of Roughness Coefficients

    This video describes the field selection of roughness coefficients, or Manning's "n" values. Both the comparative (photos) and analytical (Cowan's) methods are discussed.
     

    July 29, 2019

    Plotting High-Water Marks in the Field Using SAC-GUI

    This video describes how to use SAC-GUI in the field to plot high-water mark profiles. Plotting high-water marks in the field is required for most indirect measurement techniques
     

    July 26, 2019

    Theory of the Slope-Area Method

    This video covers the theory behind a slope-area indirect measurement, the most common type of indirect measurement used in the USGS. 
     

    July 26, 2019

    Surveying Slope-Area Measurements

    This video goes into detail about where to flag high-water marks and how to survey a slope-area measurement. A simple one-setup Total Station survey is demonstrated.

    Filter Total Items: 144
    TNMCorps Mapping Challenge: Schools in CA NV
    March 11, 2021

    Volunteers contributed almost 800 edits toward this challenge since last week. This includes the removal of over 100 points that were either closed or represented the wrong feature type - NICE WORK!!    

    TNMCorps Mapping Challenge: Schools in CA NV
    March 3, 2021

    Volunteers continue to make progress on this challenge with almost 400 edits coming in since last week!

    THUMBNAIL: Timelapse of FireStations in CA NV AZ
    March 3, 2021

    Summary statistics are now available for this challenge. Thanks again to everyone who contributed!

    TNMCorps Mapping Challenge: Schools in CA NV
    February 25, 2021

    Volunteers contibuted over 300 edits since this challenge was launched last week. This includes the removal of points that are either closed or the wrong feature type. Thank you for helping to update The National Map!

    TNMCorps Mapping Challenge: FireStations in CA NV AZ FINISHED
    February 18, 2021

    This challenge is now complete! Thank you to everyone who contributed!

    TNMCorps Mapping Challenge: Schools in CA NV NEW
    February 18, 2021

    TNMCorps Mapping Challenges continue on the Pacific coast with a new challenge for schools in California and Nevada!  This is an excellent challenge for Peer Reviewers and Advanced Editors since all the existing points have already been edited, but there are many points needing to be reviewed.  Don’t forget to look for missing schools too!

    TNMCorps Mapping Challenge: FireStations in CA NV AZ
    February 11, 2021

    Volunteers continue to make progress on this challenge as more edits come in!

    THUMBNAIL: Timelapse of City/Town Halls in CA & NV
    February 11, 2021

    Summary statistics are now available for this challenge. Thanks again to everyone who contributed!

    An infographic summarizing activities of the RAMPS program.
    February 4, 2021

    Restoration Assessment and Monitoring Program for the Southwest (RAMPS)

    A Program of the Southwest Biological Science Center & Ecosystems Mission Area

    To subscribe to our newsletter, please visit: https://listserv.usgs.gov/mailman/listinfo/ramps

    --

    TNMCorps Mapping Challenge: FireStations in CA NV AZ
    February 4, 2021

    Volunteers have already contributed over 400 edits to this challenge since it was launched last week - IMPRESSIVE!

    TNMCorps Mapping Challenge: City/Town Halls in CA & NV FINISHED
    January 28, 2021

    This challenge is now complete! Thank you to everyone who contributed!

    Filter Total Items: 22