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Microbial Source Tracking Marker Concentrations in the Chattahoochee River National Recreation Area Watershed in 2015-2017, Georgia, USA The dataset contains Esherichia coli and quantitative polymerase chain reaction data for microbial source tracking markers in the Chattahoochee River and streams within the Chattahoochee River National Recreation area from samples collected in the winter and summer of the federal fiscal years 2016 and 2017. Six water samples were collected from three sites on the Chattahoochee River each season. Eleven stream sites and one additional site on the Chattahoochee River were sampled once each season, with the exception of two sites, which were not sampled in winter FY16. Categories: Data; Tags: Atlanta, Chattahoochee, Environmental Health, USGS Science Data Catalog (SDC), Water Resources, All tags... environment, parks, polymerase chain reaction, Fewer tags Location of Seismic Reflection Line CRmv This dataset provides location information for the seismic reflection line CRmv across Crowleys Ridge in the New Madrid seismic zone, central US. The seismic reflection data are interpreted and discussed in the associated publication Categories: Data; Tags: Arkansas, Central United States, New Madrid, faults, geoscientificInformation, All tags... ghsc, seismic reflection line, Fewer tags Biophysical assessment for indemnity selection of federal lands in Colorado: Indemnity Unit locations The “Biophysical assessment for indemnity selection of federal lands in Colorado: Indemnity Unit locations” dataset delineates the spatial locations of 89 Indemnity Units, comprising 339 parcels of federal lands. These lands, currently managed by the Bureau of Land Management (BLM), are under consideration for transfer of ownership to the State of Colorado in compensation for federal lands not available for transfer at the time of statehood. The Indemnity Units total 23,130 acres of surface and mineral estate and 6,150 acres of mineral estate only. The specific land parcels to be transferred to the State will be finalized after an environmental analysis is completed, as required by the National Environmental Policy... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Colorado, boundaries, cadastral areas Hydrogeochemical Mixing data from Lake Michigan Tributaries 2011 This dataset describes the hydrogeomorphic structure and lake-tributary mixing in three intermediate-sized Lake Michigan rivermouths: Ford River, Manitowoc River, and Pere Marquette River. Data were collected from May to October 2011. Water chemistry variables were measured with a multiparameter sonde along longitudinal, lateral, and vertical transects. Magnesium, boron, and stable water isotope concentrations were also determined from grab water samples at particular depths. Categories: Data; Tags: Ford River, Geochemistry, Great Lakes, Hydrology, Lake Michigan, All tags... Manitowoc River, Pere Marquette River, USGS Science Data Catalog (SDC), conservative tracers, deltas, environment, estuaries, estuarine mixing, geomorphology, hydrogeomorphic processes, hydrology, rivermouth, water chemistry, Fewer tags Rangeland Condition Monitoring Assessment and Projection (RCMAP) Non Sagebrush Shrub Fractional Component Time-Series Across the Western U.S. 1985-2021 The RCMAP (Rangeland Condition Monitoring Assessment and Projection) dataset quantifies the percent cover of rangeland components across the western U.S. using Landsat imagery from 1985-2021. The RCMAP product suite consists of nine fractional components: annual herbaceous, bare ground, herbaceous, litter, non-sagebrush shrub, perennial herbaceous, sagebrush, shrub, and tree, in addition to the temporal trends of each component. Several enhancements were made to the RCMAP process relative to prior generations. First, we have trained time-series predictions directly from 331 high-resolution sites collected from 2013-2018 from Assessment, Inventory, and Monitoring (AIM) instead of using the 2016 “base” map as an intermediary.... Tags: AZ, Arizona, Arizona Plateau, Black Hills, Blue Mountains, All tags... CA, CO, California, Chihuahuan, Chihuahuan Desert, Colorado, Colorado Plateau, Columbia Plateau, Desert, Grand Canyon, Great Basin, Gunnison, ID, Idaho, MT, Mediterranean California, Middle Rockies, Mojave, Montana, ND, NE, NM, NV, Nebraska, Nevada, New Mexico, North Dakota, North Plains, Northern Great Plains, Northern Great Salt Lake Desert, Northern Mountainous, Northern Rocky Mountains, OR, Oregon, Plains, Plateau, Rocky Mountains, SD, Sierra Nevada, Sonoran, Sonoran Desert, South Dakota, Southern Great Salt Lake Desert, Southern Rocky Mountains, Southwest Tablelands, TX, Texas, The Rockies, Three Forks, UT, United States, Utah, WA, WY, Wasatch, Washington, Western US, Wyoming, Wyoming Basin, Yellowstone, annual herbaceous, back-in-time, bare ground, big sagebrush, biota, climate change, environment, geoscientificInformation, grass, grassland change, herbaceous, imageryBaseMapsEarthCover, litter, mts, rangeland, rangeland management, sagebrush, shrub, shrubland, shrubland change, shrubland ecosystems, shrublands, terrestrial ecosystems, time series, trends, vegetation, vegetation change, Fewer tags F01_hpwicpd19t_Raster dataset of mapped water-level changes in the High Plains aquifer, predevelopment (about 1950) to 2019 The High Plains aquifer extends from approximately 32 to 44 degrees north latitude and 96 degrees 30 minutes to 106 degrees west longitude. The aquifer underlies about 175,000 square miles in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. This digital dataset consists of a raster of water-level changes for the High Plains aquifer, predevelopment (about 1950) to 2019. It was created using water-level measurements from 2,741 wells measured in both the predevelopment period (about 1950) and in 2019, the latest available static water level measured in 2015 to 2018 from 71 wells in New Mexico and using other published information on water-level change in areas with few water-level... Tags: Colorado, Great Plains, High Plains, High Plains aquifer, Kansas, All tags... Nebraska, New Mexico, Ogallala aquifer, Oklahoma, South Dakota, Texas, Wyoming, aquifers, contouring, geoscientificInformation, geospatial analysis, groundwater, groundwater level, hydrogeology, inlandWaters, water-level change, Fewer tags Seepage investigation and dye tracing to characterize base flow stream behavior in Big Creek watershed, Newton County, Arkansas This data release pertains to a seepage investigation and dye tracing study conducted in the Big Creek watershed of Newton County, Arkansas. The seepage dataset includes geospatial files of discharge measurement points and zero-flow observations along with vector lines delineating losing and gaining stream reaches. The dye tracing dataset consists of geospatial files of monitoring sites, dye injection location, and dye flow paths. Hydrologic systems in karst environments have a high degree of interconnectivity between surface water and groundwater systems. Because of this interconnectivity, activities which occur on the surface in karst environments have a direct impact on the water quality and quantity of karst... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Arkansas, Big Creek, Buffalo National River, Buffalo River, Hydrology, All tags... Left Fork Big Creek, Newton County, Ozarks, USGS Science Data Catalog (SDC), Water Resources, dye tracing, fluorescent dye, freshwater ecosystems, groundwater, groundwater, groundwater and surface-water interaction, groundwater tracing, hydrogeology, karst, karst, karst areas, karst hydrology, seepage investigation, seepage run, seepage studies, springs (hydrographic), Fewer tags Breeding songbird tissue analysis and metal concentrations in tissues, soil and invertebrates collected near nesting sites within the Southeast Missouri Lead Mining District, 2016-19 This dataset provides results for the following: (1) metals concentrations in soils surrounding breeding song bird nest sites; (2) metals concentrations in invertebrates (earthworm and grub composites) collected near nest sites; (3) metals concentrations and delta-aminolevulinic acid dehydratase (ALAD) activity in avian blood samples; and (4) metals concentrations, indicators of oxidative stress and DNA damage, and histopathology in liver and/or kidney tissues collected from breeding song birds. Tags: DNA damage, Mining and Mineral Extraction, Missouri, Natural Resource Damage Assessment and Restoration, Southeast Missouri Lead Mining District, All tags... USGS Science Data Catalog (SDC), United States, Wildlife Biology, biota, blood, delta-aminolevulinic acid dehydratase activity, environment, heavy metal pollution, histopathology, industrial sites, kidney, lead-contaminated soil, liver, metal elements, metallic mineral resources, microscopic lesions, mine sites, nesting songbirds, oxidative stress, soil invertebrates, Fewer tags Ohia Dieback Study - Hawaii Island Canopy Status Assessment Table, 1977 - 2015 We analyzed very-high-resolution imagery to assess status of Metrosideros polymorpha forests across an 83,603 hectare study area that experienced extensive canopy dieback in the 1970s on the eastern side of the island of Hawaii. Using GIS we generated 1170 virtual vegetation plots with a 100 m radius; 541 plots in areas mapped in 1977 with trees dead or mostly defoliated (dieback), and 629 plots in adjacent wet forest habitat, previously mapped as non-dieback condition. In each plot we estimated the percent of M. polymorpha trees dead or mostly defoliated, and percent of trees with healthy crowns. These results were combined with habitat data to produce a spatial model depicting probability of canopy dieback within... Categories: Data; Tags: Hawaii, Metrosideros polymorpha, biota, canopy dieback, field inventory and monitoring, All tags... ohia, rain forests, regeneration, vegetation, Fewer tags Ohia Dieback Study - Dieback Model Results Table Several previously published reports and geographic information system (GIS) data layers were used to code information on site attributes for each assessment plot using the spatial join tool in ArcMap. This information was used for an analysis of dieback and non-dieback habitat characteristics. The results of this analysis are presented in this table which depicts the probability of heavy to severe canopy dieback occurring at some time at a particular 30 x 30 m pixel location within the study area. Categories: Data; Tags: Hawaii, Metrosideros polymorpha, analytical modeling, biota, canopy dieback, All tags... ohia, rain forests, regeneration, vegetation, Fewer tags An Unvegetated to Vegetated Ratio (UVVR) for coastal wetlands of the United States - 2016 Prior research has shown that sediment budgets, and therefore stability, of microtidal marsh complexes scale with areal unvegetated to vegetated marsh ratios (UVVR) suggesting these metrics are broadly applicable indicators of microtidal marsh vulnerability. This effort has developed the UVVR metric using readily available satellite imagery for the coastal areas of the contiguous United States (CONUS). These datasets provide annual averages of 1) developed, 2) vegetated, 3) unvegetated ratios and 4) an unvegetated to vegetated ratio (UVVR) at 30-meter resolution over the coastal areas of the contiguous United States for the years 2014-2018. Additionally, multi-year average values of vegetated ratio, its standard... Tags: Alabama, Atlantic Coast, California, Conterminous United States, Delaware, All tags... Florida, Georgia, Gulf of Mexico Coast, Louisiana, Maine, Maryland, Mississippi, New Jersey, New York, North Carolina, Oregon, Pacific Coast, South Carolina, Texas, Virginia, Washington, coastal wetlands, wetland change, wetland gain, wetland loss, wetlands, wetlands, Fewer tags Data Release: Buttonland Swamp, SET data This study examined long-term changes in ground height using Surface Elevation Tables (SETs). Measurements were taken in the floodplains of the Cache River at Buttonland Swamp in southern Illinois. The sites where data was collected included Crawford Tract and Eagle Pond from 2020-2022 and Deer Pond and Snake Hole from 2005-2022. Categories: Data; Tags: Buttonland Swamp, Cache River, Ecology, Forested Wetland, Illinois, All tags... Land Use Change, Southern Illinois, USGS Science Data Catalog (SDC), United States, channel downcutting, climate change, elevation, freshwater ecosystems, freshwater swamp, global warming, precipitation (atmospheric), precipitation measurements, sediment deposition, sedimentation, swamp, wetlands, Fewer tags Circa 1956 Land Area in Coastal Louisiana - Original Data Source - National Wetlands Inventory - Revisions to Georectification The dataset presented here represents a circa 1956 land/water delineation of coastal Louisiana used in part of a larger study to quantify landscape changes from 1932 to 2016. The original dataset was created by the U.S. Fish and Wildlife Service, Office of Biological Services. The USGS Wetland and Aquatic Research Center altered the original data by improving the geo-rectification in specific areas known to contain geo-rectification error, most notably in coastal wetland areas in the vicinity of Four League Bay in western Terrebonne Basin. The dataset contains two categories, land and water. For the purposes of this effort, land includes areas characterized by emergent vegetation, upland, wetland forest, or scrub-shrub... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Central Louisiana Coastal, East Central Louisiana Coastal, Eastern Louisiana Coastal, Louisiana, Louisiana Coastal, All tags... West Central Louisiana Coastal, wetland change, wetland gain, wetland loss, wetlands, wetlands, Fewer tags Circa 1998 Land Area in Coastal Louisiana - Spatial Data - Landsat TM The dataset presented here represents a circa 1998 land/water delineation of coastal Louisiana used in part of a larger study to quantify landscape changes from 1932 to 2016. The dataset contains two categories, land and water. For the purposes of this effort, land includes areas characterized by emergent vegetation, upland, wetland forest, or scrub-shrub were classified as land, while open water, aquatic beds, and mudflats were classified as water. For additional information regarding this dataset, refer to USGS SIM 3381. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Central Louisiana Coastal, East Central Louisiana Coastal, Eastern Louisiana Coastal, Louisiana, Louisiana Coastal, All tags... West Central Louisiana Coastal, wetland change, wetland gain, wetland loss, wetlands, wetlands, Fewer tags Freshwater Aquatics: Urbanization and Sea Level Rise Scenarios Understanding how ecological and cultural resources may change in the future is an important component of conservation planning and for the implementation of long-term environmental monitoring. We modeled six future scenarios of urbanization and sea level rise to investigate their potential effects on the Peninsular Florida Landscape Conservation Cooperative's Priority Resources (PFLCC 2016), which were identified as important for conservation through a cooperative multi-partner effort to prioritize conservation efforts on a state-wide scale. These data represent conservation targets for the Freshwater Aquatics at present, and under six future scenarios of sea level rise and urbanization. Tags: Florida, North America, Southeast United States, biota, cities, All tags... ecosystem management, ecosystem monitoring, effects of climate change, environment, land use change, natural resource management, sea-level change, Fewer tags Data Release: Seed banks of rare Physostegia correllii in Lady Bird Johnson Lake, Austin, Texas Soil samples were collected from Lady Bird Johnson Lake, Austin, Texas in 2019 to generate seed bank data for the rare plant Physostegia correllii. Seed germination data was produced from the soil samples kept in a greenhouse at the Wetland and Aquatic Research Center in Lafayette, LA. Categories: Data; Tags: Austin, Blunn Creek, Botany, Colorado River, Lady Bird Johnson Lake, All tags... Texas, USGS Science Data Catalog (SDC), United States, biota, bottomland hardwood forest, climate change, climate change, disturbance fugitive, floodplain, floodplains, land use change, rare species, seed bank, shading, wet grassland, Fewer tags An Unvegetated to Vegetated Ratio (UVVR) for coastal wetlands of the United States - 2015 Prior research has shown that sediment budgets, and therefore stability, of microtidal marsh complexes scale with areal unvegetated to vegetated marsh ratios (UVVR) suggesting these metrics are broadly applicable indicators of microtidal marsh vulnerability. This effort has developed the UVVR metric using readily available satellite imagery for the coastal areas of the contiguous United States (CONUS). These datasets provide annual averages of 1) developed, 2) vegetated, 3) unvegetated ratios and 4) an unvegetated to vegetated ratio (UVVR) at 30-meter resolution over the coastal areas of the contiguous United States for the years 2014-2018. Additionally, multi-year average values of vegetated ratio, its standard... Tags: Alabama, Atlantic Coast, California, Conterminous United States, Delaware, All tags... Florida, Georgia, Gulf of Mexico Coast, Louisiana, Maine, Maryland, Mississippi, New Jersey, New York, North Carolina, Oregon, Pacific Coast, South Carolina, Texas, Virginia, Washington, coastal wetlands, wetland change, wetland gain, wetland loss, wetlands, wetlands, Fewer tags L5_1995_GOM_Fractional_Land_FAV_SAV_Water These data were used to quantify land area change in a wetlands possible zone of coastal wetlands during a 1985-2020 observation period. The datasets presented in this data release represent annual median estimates of the fractional amount of land, floating aquatic vegetation, submerged aquatic vegetation, and water per Landsat pixel. These data are intended for coarse-scale analysis of wetland change area. The datasets are summarized by 10-digit Hydrologic Unit Code (HUC10), and land area change through time is fit using a penalized regression smooth spline. The trends are therefore generalized in time and are intended to present coarse scale observations of trends in wetland area change. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Alabama, Conterminous United States, Florida, Gulf of Mexico Coast, Louisiana, All tags... Mississippi, Texas, coastal wetlands, wetland area, wetland change, wetland gain, wetland loss, wetlands, wetlands, wetlands, Fewer tags L5_2000_GOM_Fractional_Land_FAV_SAV_Water These data were used to quantify land area change in a wetlands possible zone of coastal wetlands during a 1985-2020 observation period. The datasets presented in this data release represent annual median estimates of the fractional amount of land, floating aquatic vegetation, submerged aquatic vegetation, and water per Landsat pixel. These data are intended for coarse-scale analysis of wetland change area. The datasets are summarized by 10-digit Hydrologic Unit Code (HUC10), and land area change through time is fit using a penalized regression smooth spline. The trends are therefore generalized in time and are intended to present coarse scale observations of trends in wetland area change. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Alabama, Conterminous United States, Florida, Gulf of Mexico Coast, Louisiana, All tags... Mississippi, Texas, coastal wetlands, wetland area, wetland change, wetland gain, wetland loss, wetlands, wetlands, wetlands, Fewer tags L8_2016_GOM_Fractional_Land_FAV_SAV_Water These data were used to quantify land area change in a wetlands possible zone of coastal wetlands during a 1985-2020 observation period. The datasets presented in this data release represent annual median estimates of the fractional amount of land, floating aquatic vegetation, submerged aquatic vegetation, and water per Landsat pixel. These data are intended for coarse-scale analysis of wetland change area. The datasets are summarized by 10-digit Hydrologic Unit Code (HUC10), and land area change through time is fit using a penalized regression smooth spline. The trends are therefore generalized in time and are intended to present coarse scale observations of trends in wetland area change. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Alabama, Conterminous United States, Florida, Gulf of Mexico Coast, Louisiana, All tags... Mississippi, Texas, coastal wetlands, wetland area, wetland change, wetland gain, wetland loss, wetlands, wetlands, wetlands, Fewer tags 1 2 3 4 5 ... 31 »