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This dataset depicts relative erosion rate derived for all land draining above the Mesoamerican reef. It is a function of slope, land cover type, precipitation and soil type. The indicators developed by the Reefs at Risk in the Caribbean project enable detailed comparative analyses of threats on many scales. The Reefs at Risk indicators are a simplification of human activities and complex natural processes. This data set was derived at the World Resources Institute for input to the sedimentation and pollution from watershed based sources threat analysis. Agriculture, though important to economic development and food security, is a source of increased sediment, nutrient, and pesticide runoff. Threats from sedimentation...
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Using basins derived from a hydrologically-corrected 30m resolution DEM as a unit for summary statistics, we provide a series of indicators focused on land-based sources of threat within the US Virgin Islands and Puerto Rico. This includes indicators of a) the relative vulnerability of the land to erosion (based on slope, precipitation and soil erodibility); b) the relative erosion potential (REP) of the land, based on the relative vulnerability of the land, coupled with the current land cover type; c) the sediment delivery rate for each basin (percentage of eroded which reaches the river mouth); d) estimated sediment delivery for the basin, given current land use;
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This map service contains GIS data in NAD83 projection from the EPA Office of Water for HUC2, HUC4, HUC6, HUC8, HUC10 and HUC12 polygons for the USDA Watershed Boundary Dataset. It is available as a WFS, WMS, and REST service as well as the native MapServer service.
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Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents the soil fine gravel fraction for the western USA. A weighted average was created for each HUC 8 watershed using approximate EMAP physical habitat substrate criteria. The values are expressed as percent by weight.
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Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents the soil cobble fraction for the western USA. A weighted average was created for each HUC 8 watershed using approximate EMAP physical habitat substrate criteria. The values are expressed as percent by weight.
Summary Analysis of historical streamflow trends and their relationship to landscape characteristics is essential for understanding geographic differences in runoff within the Great Lakes basin and for distinguishing temporal trends from temporal variance. Factor analysis of streamflow records (1956–1988) from 32 US Geological Survey gauging stations within the Great Lakes basin revealed distinct spatio-temporal patterns of stream runoff within five different regions of the basin. Streams represented by the first annual factor occurred in southern Wisconsin and the lower peninsula of Michigan, and exhibited a linear increase in mean annual streamflow over the 33 year period caused by increased autumn and winter...
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Description of Work Benthos (benthic invertebrate) and plankton (phytoplankton/zooplankton) communities in Wisconsin's four Lake Michigan Areas of Concern (AOCs; Menominee River, Lower Green Bay and Fox River, Sheboygan River, and Milwaukee Estuary) and six non-AOCs will be quantified. The inclusion of non-AOC sites will allow comparison of AOC sites to relatively-unimpacted or less-impacted control sites with natural physical and chemical characteristics that are as close as possible to that of the AOCs. The community data within and between the AOCs and non-AOCs will be analyzed. This project is a cooperative agreement between the Wisconsin Department of Natural Resources (WDNR) and the US Geological Survey (USGS)....
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Description of Work USGS will conduct seasonal sampling of benthic invertebrates, zooplankton, prey fish, and their diets to complement the seasonal lower trophic level sampling by EPA. A point of emphasis is describing the vertical distribution of planktivores and their zooplankton prey, to fill a knowledge gap on these predator/prey interactions. These data will provide a more holistic understanding of how invasive-driven, food-web changes could be altering energy available to sport fishes in the Great Lakes and used to build bioenergetics models that can evaluate whether zooplankton dynamics are being driven by limited resources or excessive predation. Understanding the key drivers of zooplankton will provide...
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This dataset and the accompanying Data Series report was created to assist in analysis and interpretation of water-quality data provided by the U.S. Geological Survey, National Stream Quality Accounting Network (NASQAN) and the National Monitoring Network (NMN). The report describes the methods used to develop the geospatial data which was primarily derived from the National Watershed Boundary Dataset (WBD12). The geospatial data contains polygon shapefiles of basin boundaries for 33 NASQAN and 5 NMN stations. In addition, 30 polygon shapefiles of the closed and noncontributing basins contained within the NASQAN or NMN boundaries where applicable are included. Also included is a point shapefile of the NASQAN and...
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This layer has been updated in 2016 This shapefile represents the watersheds present within the Crown of the Continent Ecosystem (CCE) boundary.(Note: a different CCE boundary layer was used at the time of creation, so the area amounts within the CCE may not be accurate)This dataset was developed by the Crown Managers Partnership, as part of a transboundary collaborative management initiative for the Crown of the Continent Ecosystem, based on commonly identified management priorities that are relevant at the landscape scale. The CMP is collaborative group of land managers, scientists, and stakeholder in the CCE. For more information on the CMP and its collaborators, programs, and projects please visit: http://crownmanagers.org/
What are current conditions for important park natural resources? What are the critical data and knowledge gaps? What are some of the factors that are influencing park resource conditions? Natural Resource Condition Assessments (NRCAs) evaluate and report on the above for a subset of important natural resources in national park units (hereafter, parks). Focal study resources and indicators are selected on a park-by-park basis, guided by use of structured resource assessment and reporting frameworks. Considerations include park resource setting and enabling legislation (what are this park's most important natural resources?) and presently available data and expertise (what can be evaluated at this time?). In addition...
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Natural landscapes in the Southwestern United States are changing. In recent decades, rising temperatures and drought have led to drier conditions, contributed to large-scale ecological impacts, and affected many plant and animal species across the region. The current and future trajectory of climate change underscores the need for managers and conservation professionals to understand the impacts of these patterns on natural resources. In this regional assessment of the Southwest Climate Change Initiative, we evaluate changes in annual average temperatures from 1951–2006 across major habitats and large watersheds and compare these changes to the number of species of conservation concern that are found within these...
Lookup table used to create wood debris flow provinces from Fifth Field Hydrologic Units (watersheds) polygons for the Western Oregon Plan Revision (WOPR) .BLM: (Bureau of Land Management) WOPR: (Western Oregon Plan Revision) HYD: (Hydrology) HUC: (Hydrologic Unit)
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This dataset provides the results of an assessment of estuary habitat condition in the contiguous United States. To analyze estuary condition, a cumulative disturbance index was developed based on habitat stressor variable data available at a national scale for anthropogenic disturbances measured within estuaries and their associated watersheds. Twenty-eight variables were combined within stressor categories to develop four sub-indices of disturbance for land use, alterations of river flows, pollution sources, and estuary eutrophication. These four sub-indices of disturbance were then combined to develop cumulative disturbance index scores for each estuary. This index describes the estimated combined stress on estuary...
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This data collection consists of a synthetic stream network and associated catchments developed as the foundation for a Spatially Referenced Regressions on Watershed Attributes (SPARROW) dissolved-solids source and transport model for the Upper Colorado River Basin (UCRB). The SPARROW model requires a hydrologically connected representation of a stream network through which loads are transported from an upstream reach to the next reach downstream (Schwarz and others, 2006; Moore and others, 2004). Each stream reach or segment within this synthetic stream network has an associated local drainage area or catchment used to calculate catchment characteristics that may have an effect on loads being modeled. The synthetic...
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The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Types: Citation; Tags: Flow direction network, boundaries, National Hydrography Dataset (NHD), Gaging Station, Water Intake Outflow, All tags...
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The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Types: Citation; Tags: Flow direction network, boundaries, National Hydrography Dataset (NHD), Gaging Station, Water Intake Outflow, All tags...
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Layers of geospatial data include geographic names, hydrography, and other selected map features. The map layer was produced from the Medium-Resolution National Hydrography Dataset feature classes, through feature selection and cartographic generalization, based on reference to published small-scale ancillary data sets.
Types: Citation; Tags: Flow direction network, boundaries, National Hydrography Dataset (NHD), Gaging Station, Water Intake Outflow, All tags...
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The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Types: Citation; Tags: Flow direction network, boundaries, National Hydrography Dataset (NHD), Gaging Station, Water Intake Outflow, All tags...
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Final Report - Executive Summary: This final project report is prepared to summarize the research project titled “Assessing evapotranspiration rate changes for proposed restoration of the forested uplands of the Desert Landscape Conservation Cooperatives (LCC)” for the Desert LCC of the Bureau of Reclamation as a requirement for closing out the project. This report includes the scope of work, summary of research project, results, and conclusions. Among all of the components of the terrestrial water cycle, evapotranspiration (ET) consumes the largest amount of water. Accurate estimation of ET is very important to understand the influence of ET to the hydrologic response of recharge and runoff processes in the water...


map background search result map search result map Cooperative Science and Monitoring Initiative (CSMI) - LAKE HURON National Stream Quality Accounting Network and National Monitoring Network Basin Boundary Geospatial Dataset, 2008-13 Watershed Boundary Dataset - USA Weighted average soil fine gravel fraction (2 mm to 5 mm) for the western USA Weighted average soil cobble fraction (75 mm to 250 mm) for the western USA Mesoamerican Relative Erosion Rate Puerto Rico Watershed Indicators by Basin Benthos & Plankton in Wisconsin's Lake Michigan AOCs Natural Resource Condition Assessments Managing Changing Landscapes in the Southwestern United States z_Archive Watersheds in the CCE NFHP 2015 National Estuary Assessment Results USGS National Hydrography Dataset (NHD) Medium Resolution for American Samoa 20140909 State or Territory FileGDB 10.1 USGS National Hydrography Dataset (NHD) Best Resolution for 20160831 State or Territory FileGDB 10.1 Model Version 2.2.1 Upper Colorado River Basin SPARROW model catchments and synthetic stream network - 2017 USGS National Hydrography Dataset (NHD) Best Resolution 20170914 for American Samoa State or Territory FileGDB 10.1 Model Version 2.2.1 USGS National Hydrography Dataset (NHD) Best Resolution 20170914 for Connecticut State or Territory FileGDB 10.1 Model Version 2.2.1 Report and Publications: Assessing Evapotranspiration Rate Changes for Proposed Restoration of the Forested Uplands of the DLCC USGS National Hydrography Dataset (NHD) Best Resolution 20170914 for Connecticut State or Territory FileGDB 10.1 Model Version 2.2.1 USGS National Hydrography Dataset (NHD) Best Resolution for 20160831 State or Territory FileGDB 10.1 Model Version 2.2.1 Cooperative Science and Monitoring Initiative (CSMI) - LAKE HURON z_Archive Watersheds in the CCE Benthos & Plankton in Wisconsin's Lake Michigan AOCs Report and Publications: Assessing Evapotranspiration Rate Changes for Proposed Restoration of the Forested Uplands of the DLCC Upper Colorado River Basin SPARROW model catchments and synthetic stream network - 2017 Mesoamerican Relative Erosion Rate Managing Changing Landscapes in the Southwestern United States Weighted average soil fine gravel fraction (2 mm to 5 mm) for the western USA Weighted average soil cobble fraction (75 mm to 250 mm) for the western USA National Stream Quality Accounting Network and National Monitoring Network Basin Boundary Geospatial Dataset, 2008-13 NFHP 2015 National Estuary Assessment Results Natural Resource Condition Assessments Watershed Boundary Dataset - USA