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California Groundwater Ambient Monitoring and Assessment (GAMA) Program Domestic-Supply (Shallow) Aquifer Assessment Study Unit Boundaries for Assessment of Groundwater Resources The California Groundwater Ambient Monitoring and Assessment Program (GAMA) is a statewide assessment of groundwater quality designed to help better understand and identify risks to groundwater resources. GAMA is implemented by the California State Water Resources Control Board. The U.S. Geological Survey (USGS) is the technical lead for the Priority Basin Project (PBP), one of the components of the GAMA Program. Starting in 2012, GAMA began an assessment of water resources in domestic-supply (shallow) aquifers in California. These aquifers provide water for domestic and small community-supply wells, which are often drilled to shallower depths in the groundwater system than public-supply wells. Domestic-supply aquifers... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: California, GAMA, Groundwater, Priority Basin Project, United States, All tags... domestic wells, domestic-supply aquifer, drinking water, environment, inlandWaters, shallow aquifer, water-quality, Fewer tags Biogeochemical and source characteristics of preferential groundwater discharge in the Farmington River watershed (Connecticut and Massachusetts, 2017 - 2021) We used spatial data from previously mapped preferential groundwater discharges throughout the Farmington River watershed in Connecticut and Massachusetts (https://doi.org/10.5066/P915E8JY) to guide water sample collection at known locations of groundwater discharging to surface water. In 2017 and 2019 - 2021, samples were collected during general river baseflow conditions (July – November, <30.9 cms mean daily discharge (USGS gage 01189995, statistics 2010-2022) when the riverbank discharge points were exposed. We collected a suite of dissolved constituents and stable isotopes of water directly in the shallow saturated sediments of active points of discharge, and coincident stream chemical samples were also collected... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Connecticut, Farmington River, Hydrology, Massachusetts, USGS Science Data Catalog (SDC), All tags... groundwater, groundwater and surface-water interaction, groundwater and surface-water interaction, inlandWaters, nutrient content (water), Fewer tags Root thread strength, landslide headscarp geometry, and observed root characteristics at the monitored CB1 landslide, Oregon, USA This data release supports interpretations of field-observed root distributions within a shallow landslide headscarp (CB1) located below Mettman Ridge within the Oregon Coast Range, approximately 15 km northeast of Coos Bay, Oregon, USA. (Schmidt_2021_CB1_topo_far.png and Schmidt_2021_CB1_topo_close.png). Root species, diameter (greater than or equal to 1 mm), general orientation relative to the slide scarp, and depth below ground surface were characterized immediately following landsliding in response to large-magnitude precipitation in November 1996 which triggered thousands of landslides within the area (Montgomery and others, 2009). The enclosed data includes: (1) tests of root-thread failure as a function of... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Botany, Forestry, Geomorphology, Oregon, Soil Sciences, All tags... Southern Oregon Coastal, USGS Science Data Catalog (SDC), United States, biota, environment, geoscientificInformation, landslide, landslide susceptibility assessment, plant, root, Fewer tags Historic and future trends in exotic annual grass (%) cover in the western US (1985 to 2019 and 2025 to 2040) Exotic annual grasses [EAG] are one of the most damaging biological stressors in western North America. Despite numerous environmental and societal impacts associated with EAG there remains a need to enhance regional monitoring capabilities to better guide management and conservation efforts. Here we provide estimates of historic and potential future trends in EAG abundance that were developed using linear trend analysis and machine learning techniques at a 30-m spatial resolution. Specifically, these data represent historic (1985 to 2019) and potential future (2025-2040) rates of exotic annual grass change as estimated using Theil-Sen regression and a process-constrained, random forest model assuming only changes... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Ecology, Exotic annual grasses, cheatgrass, remote sensing, Exotic annual grasses, cheatgrass, remote sensing, Land Use Change, Remote Sensing, All tags... USGS Science Data Catalog (SDC), biota, Fewer tags Modelled long-term wildfire occurrence probabilities in sagebrush-dominated ecosystems in the western US (1985 to 2019) Exotic annual grasses are one of the most damaging biological stressors in western North America and increase the susceptibility of landscapes to wildfire occurrence. Here we couple estimates of long-term rangeland component fractions (e.g. exotic annual grasses) with remote sensing, climate data, and machine learning techniques to estimate the long-term (1985 to 2019) probability of wildfire occurrence (30-m spatial resolution) in sagebrush-dominated landscapes of the western United States. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Ecology, Exotic annual grasses, cheatgrass, remote sensing, wildfire, Land Use Change, Remote Sensing, Remote sensing, wildfire occurrence, wildfire risk, All tags... USGS Science Data Catalog (SDC), biota, Fewer tags USGS Denver Micro-fossil collection: Fossil Algae The Denver fossil algae database were gathered from the inception of Denver Region in 1953 by Richard Rezak. His specialty was algae, carbonate platforms, and off-shore modern reefs. He developed a very useful litho-stratigraphic tool while studying Proterozoic algae and stromatolites in Glacier National Park. This lead to his studies of modern analogs in the Caribbean and South Seas. His catalogs were converted into digital form, Excel and Filemaker Pro database. The Catalog consist of 1001 fossil localities. His supplementary data has been added whenever possible - sources field map locality points, E&R files with enhanced faunal lists, as well as formal publications Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Eastern Asia, USGS Science Data Catalog (SDC), United States, algae, biota, All tags... fossils, litho-stratigraphy, none, stromatolites, Fewer tags Update to the groundwater withdrawals database for the Death Valley regional groundwater flow system, Nevada and California, 1913-2010 Note: This data release has been revised. Find version 2.0 here: https://doi.org/10.5066/F75H7FH3. Groundwater withdrawal estimates from 1913-2010 for the Death Valley regional groundwater flow system (DVRFS) are compiled in a Microsoft® Access database. This database updates two previously published databases (Moreo and others, 2003; Moreo and Justet, 2008). A total of about 38,000 acre-feet of groundwater was withdrawn from the DVRFS in 2010, of which 47 percent was used for irrigation, 22 percent for domestic, and 31 percent for public supply, commercial, and mining activities. The updated database was compiled to support ongoing efforts to model groundwater flow in the DVRFS. References cited: Moreo, M.T.,... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Amargosa Desert, Death Valley, Death Valley Regional Flow System, Hydrology, Nevada Test Site, All tags... Nye County, Pahrump Valley, State of Nevada, environment, geoscientificInformation, groundwater, inlandWaters, pumpage, water use, withdrawals, Fewer tags Groundwater divide line, spring 1972, Smith Valley, Nevada This dataset consists of a polyline representing a groundwater divide for spring 1972, Smith Valley, Nevada digitized from plate 2 of the 1976 publication: Rush, F.E.,and Schroer, C.V., 1976, Geohydrology of Smith Valley, Nevada with special reference to the water-use period 1953-72: Nevada Department of Conservation and Natural Resources Water Resources Bulletin 43, 43p. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Basin 107, Hydrographic Basin 9, Nevada, Smith Valley, Walker River, All tags... Walker River Basin, groundwater, groundwater divide, groundwater level, hydrology, inlandWaters, water-level, Fewer tags Plumeria Simulations of 20 December 2020 Kīlauea Volcano Eruption Plume This data release contains results of model simulations of a plume at Kilauea volcano that occurred on 20 December 2020. The ash-poor plume was produced when lava flowed into a water lake at the summit of Kilauea volcano. Simulations were conducted to constrain the conditions under which the plume rose to its observed height. The analysis and results are described in the accompanying paper: Cahalan RC, Mastin L, Van Eaton A, Hurwitz S, Smith AB, Dufek J, Solovitz SA, Patrick M, Schmith J, Parcheta C, Thelen W, Downs DT (2023 (in press)) Dynamics of the December 2020 ash-poor plume formed by lava-water interaction at the summit of Kīlauea Volcano, Hawaiʻi. Geochemistry, Geophysics, Geosystems. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Kilauea volcano, Kilauea volcano, USGS Science Data Catalog (SDC), Volcanology, biota, All tags... plume modeling, plume modeling, volcanic hazards, volcanic hazards, volcanic plume, volcanic plume, Fewer tags Hydrogeologic Section Line Labels in the Owasco Inlet Watershed, Cayuga and Tompkins Counties, New York This child item dataset contains a shapefile of labels for hydrogeologic sections illustrated in Heisig, 2023 (figure 3, plate 1). The "Sec_ID" attribute lists letter-number designations for the ends of each section. Hydrogeologic section labels are in the format x - x'. By convention, the x is on the west side and the x' is on the east side of generally horizontal sections. In generally vertical sections, the x is the westernmost of the section ends and the x' is the eastermost end of the section line. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Aquifer Mapping, Basin & Hydrogeologic Characterization, Cayuga County, Freeville, Groton, All tags... Locke, Moravia, New York, Peruville, Surficial Geology, Tompkins County, United States, Water Use and Availability Science, hydrogeology, Fewer tags Coastal wetlands of the Blackwater region, Chesapeake Bay, Maryland Note: The 2022 data release "Geospatial Characterization of Salt Marshes in Chesapeake Bay" incorporates the Blackwater region salt marsh dataset. (https://doi.org/10.5066/P997EJYB) This data release contains coastal wetland synthesis products for the geographic region of Blackwater, Chesapeake Bay, Maryland. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and others, are calculated for smaller units delineated from a digital elevation model, providing the spatial variability of physical factors that influence wetland health. The U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands with the intent... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Blackwater National Wildlife Refuge, Chesapeake Bay, Dorchester County, Fishing Bay, Honga River, All tags... Maryland, Nanticoke River, United States, Wicomico County, coastal ecosystems, coastal processes, environment, estuary, geospatial datasets, inlandWaters, marsh health, oceans, salt marsh, vegetation, wetland ecosystems, wetland functions, Fewer tags Mean of the Top Ten Percent of NDVI Values in the Yuma Proving Ground during Monsoon Season, 1986-2011 This study uses growth in vegetation during the monsoon season measured from LANDSAT imagery as a proxy for measured rainfall. NDVI values from 26 years of pre- and post-monsoon season Landsat imagery were derived across Yuma Proving Ground (YPG) in southwestern Arizona, USA. The LANDSAT imagery (1986-2011) was downloaded from USGS’s GlobeVis website (http://glovis.usgs.gov/). Change in NDVI was calculated within a set of 2,843 Riparian Area Polygons (RAPs) up to 1 km in length defined in ESRI ArcMap 10.2. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arizona, Landsat TM, NDVI, Normalized Difference Vegetation Index, Sonoran Desert, All tags... Southwestern United States, USGS Science Data Catalog (SDC), Yuma Proving Ground, biota, climatologyMeteorologyAtmosphere, ephemeral stream channels, monsoon season, Fewer tags Multibeam backscatter data collected in Nantucket Sound Massachusetts in the vicinity of Horseshoe Shoal, during USGS Field Activity 2022-001-FA using a Teledyne SeaBat Integrated Dual-Head (IDH) T20-P multibeam echosounder (8-bit GeoTIFF, UTM Zone 19N, WGS 84, 1-m resolution) In June 2022, the U.S. Geological Survey, in collaboration with the Massachusetts Office of Coastal Zone Management, collected high-resolution geophysical data, in Nantucket Sound to understand the regional geology in the vicinity of Horseshoe Shoal. This effort is part of a long-term collaboration between the USGS and the Commonwealth of Massachusetts to map the State’s waters, support research on the Quaternary evolution of coastal Massachusetts, resolve the influence of sea-level change and sediment supply on coastal evolution, and strengthen efforts to understand the type, distribution, and quality of subtidal marine habitats. This collaboration produces high-resolution geologic data that serve the needs of... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Atlantic Ocean, CMHRP, CZM, Coastal and Marine Hazards and Resources Program, DOI, All tags... Department of the Interior, Eldridge Shoal, GeoTIFF, Horseshoe Shoal, Marine Geology, MassCZM, Massachusetts, Massachusetts Office of Coastal Zone Management, Nantucket Sound, R/V Rafael, Reson, Succonnesset Shoal, T20-P, Teledyne, U.S. Geological Survey, USGS, United States of America, WHCMSC, Woods Hole Coastal and Marine Science Center, Wreck Shoal, backscatter, field activity number 2022-001-FA, geoscientificInformation, geospatial datasets, imageryBaseMapsEarthCover, marine geology, marine geophysics, multibeam backscatter, multibeam echosounder, multibeam sonar, sea-floor acoustic reflectivity, time-series, Fewer tags Spatial data associated with tungsten skarn resource assessment of the Northern Rocky Mountains, Montana and Idaho A mineral resource assessment was performed by the U.S. Geological Survey (USGS) to assess the potential of undiscovered skarn-hosted tungsten resources in the Northern Rocky Mountain region of eastern Idaho and western Montana. This region has seen moderate tungsten trioxide (WO3) production in the past from a variety of mineralization styles including skarn, vein and replacement, and wolframite-quartz veins. The geology of the area is dominated by large plutons of Cretaceous to Tertiary age, emplaced into a belt of sedimentary rock ranging from Mesoproterozoic to Permian age, and affected by tectonism related to the Sevier and later Laramide orogenies. Known tungsten (W) skarn mineral sites are associated with... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Ashton, Bald Mountain, Beaverhead County, Bitterroot Range, Boise County, All tags... Bozeman, Broadwater County, Butte, Challis, Choteau, Cretaceous, Custer County, Deer Lodge County, Dillon, Dubois, Elk City, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Granite County, Great Falls, Hamilton, Helena, Idaho, Idaho County, Jefferson County, Lewis and Clark County, Little Belt Mountains, MRP, Madison County, Mesoproterozoic, Mineral Resources Program, Montana, Northern Rocky Mountains, Paleozoic, Pioneer Mountains, Powell County, Ravali County, Rocky Mountain, Silver Bow County, Tertiary, Thompson Creek, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), United States, Valley County, Wallace, White Sulphur Spring, Yellow Pine, economic geology, economy, geochemistry, geophysics, geoscientificInformation, idaho, igneous rocks, metallic mineral resources, mineral assessment, mineral assessment, mineral deposits, mineral resources, montana, plutonic rocks, rocks and deposits, sedimentary rocks, tungsten, tungsten, Fewer tags A GIS compilation of vector shorelines for the Virginia coastal region from the 1840s to 2010s The U.S. Geological Survey (USGS) has compiled national shoreline data for more than 20 years to document coastal change and serve the needs of research, management, and the public. Maintaining a record of historical shoreline positions is an effective method to monitor national shoreline evolution over time, enabling scientists to identify areas most susceptible to erosion or accretion. These data can help coastal managers and planners understand which areas of the coast are vulnerable to change. This data release includes a compilation of previously published historical shoreline positions for Virginia spanning 148 years (1849-1997), and two new mean high water (MHW) shorelines extracted from lidar data collected... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Coast, Baseline, DSAS, Digital Shoreline Analysis System, HWL, All tags... High Water Line, MHW, Mean High Water, Shoreline, Shoreline Change, U.S. Geological Survey, USGS, United States, Virginia, WHCMSC, Woods Hole Coastal and Marine Science Center, coastal processes, environment, geoscientificInformation, geospatial datasets, historical shorelines, oceans, Fewer tags Intersects for coastal region of Virginia generated to calculate short-term shoreline change rates using the Digital Shoreline Analysis System version 5.1 The U.S. Geological Survey (USGS) has compiled national shoreline data for more than 20 years to document coastal change and serve the needs of research, management, and the public. Maintaining a record of historical shoreline positions is an effective method to monitor national shoreline evolution over time, enabling scientists to identify areas most susceptible to erosion or accretion. These data can help coastal managers and planners understand which areas of the coast are vulnerable to change. This data release includes a compilation of previously published historical shoreline positions for Virginia spanning 148 years (1849-1997), and two new mean high water (MHW) shorelines extracted from lidar data collected... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Coast, Baseline, DSAS, Digital Shoreline Analysis System, Mid-Atlantic, All tags... North America, Shoreline, Shoreline Change, U.S. Geological Survey, USGS, United States, Virginia, WHCMSC, Woods Hole Coastal and Marine Science Center, accretion, coastal processes, environment, erosion, erosion, geoscientificInformation, geospatial datasets, long-term change, oceans, shoreline accretion, short-term change, Fewer tags Long-term shoreline change rates for the Virginia coastal region, calculated with and without the proxy-datum bias using the Digital Shoreline Analysis System version 5.1 The U.S. Geological Survey (USGS) has compiled national shoreline data for more than 20 years to document coastal change and serve the needs of research, management, and the public. Maintaining a record of historical shoreline positions is an effective method to monitor national shoreline evolution over time, enabling scientists to identify areas most susceptible to erosion or accretion. These data can help coastal managers and planners understand which areas of the coast are vulnerable to change. This data release includes a compilation of previously published historical shoreline positions for Virginia spanning 148 years (1849-1997), and two new mean high water (MHW) shorelines extracted from lidar data collected... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Coast, Atlantic Coast, Baseline, DSAS, Digital Shoreline Analysis System, All tags... Mid-Atlantic, North America, Shoreline, Shoreline Change, U.S. Geological Survey, USGS, United States, Virginia, Virginia, WHCMSC, Woods Hole Coastal and Marine Science Center, accretion, coastal processes, environment, erosion, erosion, geoscientificInformation, geospatial datasets, long-term change, oceans, shoreline accretion, short-term change, Fewer tags Lake Erie, Western Basin Aquatic Vegetation data Observations and subtle shifts of vegetation communities in western Lake Erie have USGS researchers concerned about the potential for Grass Carp to alter these vegetation communities. Broad-scale surveys of vegetation using remote sensing and GIS mapping, coupled with on-the-ground samples in key locations will permit assessment of the effect Grass Carp may have already had on aquatic vegetation communities and establish baseline conditions for assessing future effects. Existing aerial imagery was used with object-based image analysis to detect and map aquatic vegetation in the western basin of Lake Erie. Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Asian Carp, Emergent Vegetation, Erie County, Grass Carp, Great Lakes, All tags... Lake Erie, Lake Erie Western Basin, Lucas County, Michigan, Monroe County, Ohio, Ottawa County, Sandusky Bay, Sandusky County, Submersed Aquatic Vegetation, aerial photography, aquatic vegetation, habitats, image collections, invasive species, object-based image analysis, remote sensing, vegetation mapping, Fewer tags Arundo donax (Arundo Cane) Image Classification along the Rio Grande in Webb County, Texas, September 26, 2020 This dataset contains a thematic [classified] image derived from supervised classification of WorldView-3 satellite imagery. This data release contains a geospatial thematic (raster) image derived from a supervised classification of WorldView-3 satellite imagery obtained during 2020–21. Arundo donax (Arundo cane, giant reed, or Carrizo cane), is an invasive bamboo-like perennial grass most common to riparian areas throughout the southwestern United States. Because it displaces native riparian vegetation, Arundo cane has greatly disrupted the health of riparian ecosystems in the southwestern United States and northern Mexico during the past 50 years. Arundo cane also has created border security problems along the... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Arundo cane, Arundo donax, Carrizo cane, Giant Reed, Rio Grande, All tags... Texas, USGS:644006a6d34ee8d4ade6cf31, Webb County, biota, geospatial analysis, image analysis, inlandWaters, multispectral imaging, panchromatic imaging, Fewer tags Arundo donax (Arundo Cane) Image Classification along the Rio Grande in Webb County, Texas, May 07, 2021 This dataset contains a thematic [classified] image derived from supervised classification of WorldView-3 satellite imagery. This data release contains a geospatial thematic (raster) image derived from a supervised classification of WorldView-3 satellite imagery obtained during 2020–21. Arundo donax (Arundo cane, giant reed, or Carrizo cane), is an invasive bamboo-like perennial grass most common to riparian areas throughout the southwestern United States. Because it displaces native riparian vegetation, Arundo cane has greatly disrupted the health of riparian ecosystems in the southwestern United States and northern Mexico during the past 50 years. Arundo cane also has created border security problems along the... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Arundo cane, Arundo donax, Carrizo cane, Giant Reed, Rio Grande, All tags... Texas, USGS:64400a5dd34ee8d4ade6cf50, Webb County, biota, geospatial analysis, image analysis, inlandWaters, multispectral imaging, panchromatic imaging, Fewer tags 1 2 3 4 5 ... »