United States of America water data
＋ Follow new data158 datasets about water in United States of America.
Full Metadata This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). The layers in this web service are derived from a dataset produced by Forest Trends' Ecosystem Marketplace containing points and polygons depicting the location of market-based programs and projects addressing ecosystem services protection and their enabling conditions in the United States. This dataset contains polygons and points representing the location of markets and projects primarily targeting watershed-related ecosystem services per Ecosystem Marketplace research. Polygons for projects represent the project footprint (i.e. land area comprising the project site) or area of primary impact. Polygons for markets represent the entire region that shares market infrastructure and rules, or a larger program encompassing many smaller projects. Points represent the centroids of market and project polygons with the exception of national markets, whose points represent administrative headquarters locations. EnviroAtlas allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the conterminous United States as well as detailed metrics for select communities. Additional descriptive information about each attribute in this web service can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).
Full Metadata This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). The layers in this web service are derived from a dataset produced by Forest Trends' Ecosystem Marketplace containing points and polygons depicting the location of market-based programs and projects addressing ecosystem services protection and their enabling conditions in the United States. This dataset contains polygons and points representing the location of markets and projects primarily targeting watershed-related ecosystem services per Ecosystem Marketplace research. Polygons for projects represent the project footprint (i.e. land area comprising the project site) or area of primary impact. Polygons for markets represent the entire region that shares market infrastructure and rules, or a larger program encompassing many smaller projects. Points represent the centroids of market and project polygons with the exception of national markets, whose points represent administrative headquarters locations. EnviroAtlas allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the conterminous United States as well as detailed metrics for select communities. Additional descriptive information about each attribute in this web service can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).
Full Metadata This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). The layers in this web service are derived from a dataset produced by Forest Trends' Ecosystem Marketplace containing points and polygons depicting the location of market-based programs and projects addressing ecosystem services protection and their enabling conditions in the United States. This dataset contains polygons and points representing the location of markets and projects primarily targeting watershed-related ecosystem services per Ecosystem Marketplace research. Polygons for projects represent the project footprint (i.e. land area comprising the project site) or area of primary impact. Polygons for markets represent the entire region that shares market infrastructure and rules, or a larger program encompassing many smaller projects. Points represent the centroids of market and project polygons with the exception of national markets, whose points represent administrative headquarters locations. EnviroAtlas allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the conterminous United States as well as detailed metrics for select communities. Additional descriptive information about each attribute in this web service can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).
Full Metadata This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). The layers in this web service are derived from a dataset produced by Forest Trends' Ecosystem Marketplace containing points and polygons depicting the location of market-based programs and projects addressing ecosystem services protection and their enabling conditions in the United States. This dataset contains polygons and points representing the location of markets and projects primarily targeting watershed-related ecosystem services per Ecosystem Marketplace research. Polygons for projects represent the project footprint (i.e. land area comprising the project site) or area of primary impact. Polygons for markets represent the entire region that shares market infrastructure and rules, or a larger program encompassing many smaller projects. Points represent the centroids of market and project polygons with the exception of national markets, whose points represent administrative headquarters locations. EnviroAtlas allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the conterminous United States as well as detailed metrics for select communities. Additional descriptive information about each attribute in this web service can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).
Full Metadata This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). The layers in this web service are derived from a dataset produced by Forest Trends' Ecosystem Marketplace containing points and polygons depicting the location of market-based programs and projects addressing ecosystem services protection and their enabling conditions in the United States. This dataset contains polygons and points representing the location of markets and projects primarily targeting watershed-related ecosystem services per Ecosystem Marketplace research. Polygons for projects represent the project footprint (i.e. land area comprising the project site) or area of primary impact. Polygons for markets represent the entire region that shares market infrastructure and rules, or a larger program encompassing many smaller projects. Points represent the centroids of market and project polygons with the exception of national markets, whose points represent administrative headquarters locations. EnviroAtlas allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the conterminous United States as well as detailed metrics for select communities. Additional descriptive information about each attribute in this web service can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).
This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). This web service includes layers depicting EnviroAtlas national landscape indicators for 12-digit HUCs, counties, and states within the conterminous United States. EnviroAtlas allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the conterminous United States as well as detailed metrics for select communities. Additional descriptive information about each attribute in this web service can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).
The District of Columbia's IT STaR2 contract vehicle allows all the District's public-sector organizations to hire contractors. It streamlines and standardizes IT procurement, utilizing an open network of IT staffing suppliers to meet the diverse IT needs of the District. This provides a one-stop shop and contract processes to quickly engage needed resources for DC agency programs, and provide requisite support for the duration of the contract position. Per Exhibit G of contract CW95481 between CAI and the District of Columbia, a report is required which will provide a list of open requirements available for candidate submittal via the VMS.
Full Metadata This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). The layers in this web service depict ecosystem services at the census block group level for all EnviroAtlas communities. These layers illustrate the ecosystems and natural resources that are associated with clean air, clean and plentiful water, natural hazard mitigation, climate stabilization, recreation, culture, and aesthetics, and biodiversity conservation, and factors that place stress on those resources. EnviroAtlas allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the conterminous United States as well as detailed metrics for select communities. Additional descriptive information about each attribute in this web service can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).
This map service contains GIS data for the Watershed Boundary Dataset (WBD) distributed with NHDPlus v2.1 (HUC2, HUC4, HUC6, HUC8, HUC10 and HUC12). The data has been simplified to increase display performance. The information supporting this service resides in the Reach Address Database (RAD) which is part of the Watershed Assessment, Tracking & Environmental Results System (WATERS).For complete metadata, please use refer to the full NHDPlus documentation at: http://www.horizon-systems.com/nhdplus/NHDPlusV2_home.php.
Dates of Images: Post-Event: Pre-Event: June 10; 2026, June 13, 2026; June 15, 2026 Summary: Normalized Difference Water Index (NDWI) provides a different view of the Earth's surface combining different bands to make water bodies more obvious. This index can be used to identify flooded areas as well as heavily saturated areas. Suggested Use: For NDWI, areas of existing water, such as a rivers or lakes appear in the darkest green with high values near 1, while dry land appears in the darkest brown with low values near -1. This product can be used to identify potentially flooded areas that can be seen in varying shades of green and light brown depending on the amount of moisture picked up by the satellite. Note: Areas of cloud cover will show up in varying shades of green/blue similar to water. Satellite/Sensor: MultiSpectral Instrument (MSI) on European Space Agency's (ESA) Copernicus Sentinel-2A/2B satellites Resolution: 10 meters Credits: NASA/MSFC, USGS, ESA Copernicus Esri REST Endpoint: See URL to the right.
Division of Water (DOW) Priority Watersheds receive greater consideration for funding and technical support in state agency programs, including USEPA 319 (Nonpoint Source) Grant Program Funding, state revolving funds for water and wastewater infrastructure, and state agricultural cost-share programs. DOW Priority Watersheds are distributed throughout the state, consisting of both 319 Program Basin Priorities, and Nutrient Priorities. Each DOW Priority area is scaled to a HUC-12 watershed. These focused investment areas consisting of both 319 Program Basin Priorities, and Nutrient Priority Areas. Basin Priorities reflect areas with a demonstrated need for investment (impaired waters, environmental justice considerations, TMDLs, nutrient priorities, sourcewater, or local high-quality waterways), and sufficient local capacity (watershed plans) to improve water quality. Nutrient Priorities reflect areas of high aquatic nutrient concentrations (yields), locations of repeat confirmed Harmful Algal Blooms (HABs), and sensitive drinking water sources. Combined, these two data sets represent a data-driven prioritization effort to address specific local water quality needs. Downlaod spatial layer on Box.
Full Metadata This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). This map estimates the percent vegetated cover within 50 meters of hydrologically connected non-coastal waters. It is not summarized by census block group. For specific information about methods used to develop data for each community, consult their individual metadata records: Austin, TX; Birmingham, AL; Baltimore, MD; Brownsville, TX; Chicago, IL; Cleveland, OH; Des Moines, IA; Durham, NC; Fresno, CA; Green Bay, WI; Los Angeles, CA; Minneapolis/St. Paul, MN; Memphis, TN; Milwaukee, WI; New Bedford, MA; New Haven, CT; New York, NY; Philadelphia, PA; Phoenix, AZ; Pittsburgh, PA; Portland, ME; Paterson, NJ; Portland, OR; Salt Lake City, UT; Sonoma County, CA; St. Louis, MO; Tampa, FL; Virginia Beach/Williamsburg, VA; Washington, DC; and Woodbine, IA.
Rivers of Kentucky. Rivers were extracted from the 100K NHD dataset. Box Download: https://ky.box.com/v/kymartian-rivers
Full Metadata This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). This web service includes layers depicting depicting NHD Version 2.1 Plus flowlines and waterbodies for the conterminous United States. Flowlines are separated out to display 3rd Order and smaller flowline features in one layer and 4th Order and higher flowline features in another. EnviroAtlas allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the conterminous United States as well as detailed metrics for select communities. Additional descriptive information about each attribute in this web service can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).
The layer includes data that identifies compensatory mitigation projects in the Commonwealth. These projects are restorations of streams or wetlands performed to compensate for unavoidable impacts to streams and wetlands. The project areas are protected in perpetuity and are either under construction, monitoring post construction or have been released from monitoring and considered stable. Active and released mitigation sites.
Summary: The Advanced Rapid Imaging and Analysis (ARIA) and Observational Products for End-Users from Remote Sensing Analysis (OPERA) teams at NASA's Jet Propulsion Laboratory and California Institute of Technology created maps of surface water extent impacted by the flooding caused by Atmospheric Rivers in the Pacific Northwest starting on December 8, 2025 using the OPERA Dynamic Surface Water Extent from Sentinel-1 (DSWx-S1). The results posted here are preliminary and unvalidated results, primarily intended to aid the field response and provide a rough first look at the inundation extent. The ARIA-share website has always focused on posting preliminary results as fast as possible for disaster response. All information is provisional for use under emergency response guidelines. These data are provided with absolutely no warranty of any kind. Use at your own risk. OPERA DSWx-S1 The OPERA DSWx-S1 was used to identify surface water for the flooding event. The images provided are a mosaic of OPERA DSWx-S1 products, producing a composite image for each date. The mosaicking applied prioritized pixels classified as open surface water and inundated vegetation to preserve water pixels in regions of product granule overlap. The images are provided as GeoTIFF files. Water (WTR) Layer Description: Masked interpreted water classification layer. This represents pixel-wise classification into one of three water classes (not water, open water and inundated vegetation), masks (HAND mask and layover/shadow mask), or no data classes. Water (WTR) Layer Values: 0: Not Water - an area with valid data that is not open water (class 1), inundated vegetation (class 3), height above nearest drainage masked (class 250), or layover/shadow masked (class 251). Masking can result in "not water" (class 0) where land cover masking is applied (suggested color: #ffffff) 1: Open Water - an area that is entirely water and unobstructed to the sensor, including obstructions by vegetation, terrain, and buildings. (suggested color: #0000ff) 3: Inundated vegetation - an area that is considered inundated, extracted from the high value in dual polarization ratio and the wetland class in land cover map. (suggested color: #00ff00) 250: Height Above Nearest Drainage (HAND) masked - an area where topographic height is higher than the HAND threshold (suggested color: #c8c8c8) 251: Layover/shadow masked - an area identified as layover or shadow computed from the geometry of the digital elevation model and sensor. The area is directly copied from input burst RTC-S1 products (suggested color: #808080) 255: No data (suggested color: transparent) Water Gain Description: Water gain classification layer. This represents pixel-wise classification into water gain and no change/water loss, as well as no data classes. Water Gain Layer Values:0: No Change or Water Loss- an area that had no change (e.g., open water in both images) or water loss (e.g., open water to not water). Masked pixels from HAND and Layover/Shadow are set to No data. (suggested color: #ffffff) 1: Water Gain - an area that gained water in the most recent image. This includes change from Not Water to Inundated Vegetation, Not Water to Open Water, and Inundated Vegetation to Open Water. (suggested color: #ff15e4) Satellite/Sensor: Synthetic Aperture Radar (SAR) instrument on European Space Agency's (ESA) Sentinel-1A/C satellite. Resolution: 30 meters OPERA DSWx-S1 data availability The post-processed products are available to download at https://aria-share.jpl.nasa.gov/20251210-PacificNorthwest-AtmRiver/DSWx-S1//. The OPERA DSWx-S1 products have been in production since September 2024, are freely distributed to the public via NASA's Physical Oceanography Distributed Active Archive Center (PO.DAAC), and can be downloaded through NASA's Earthdata search. For more information about the Dynamic Surface Water eXtent product suite, please refer to the DSWx Product page: https://www.jpl.nasa.gov/go/opera/products/dswx-product-suite. For more information about the Caltech-JPL ARIA project, visit https://aria.jpl.nasa.gov. For more information about the JPL OPERA project, visit https://www.jpl.nasa.gov/go/opera/. Product POCs: Cole Speed (cole.speed@jpl.nasa.gov) Mary Grace Bato (bato@jpl.nasa.gov) Ines Fenni (ines.fenni@jpl.nasa.gov) Emre Havazli (emre.havazli@jpl.nasa.gov) Alexander Handwerger (alexander.handwerger@jpl.nasa.gov) WMS Endpoint: https://gis.earthdata.nasa.gov/portal/services/DISASTERS_202512_FLOOD_WA/2512_opera_dswx_s1/MapServer/WMSServer Data Download: https://aria-share.jpl.nasa.gov/20251210-PacificNorthwest-AtmRiver/DSWx-S1/ Credits: Sentinel-1 data were accessed through the Copernicus Open Hub and the Alaska Satellite Facility server. The product contains modified Copernicus Sentinel data (2025), processed by the European Space Agency and analyzed by the NASA-JPL/Caltech ARIA and OPERA team. The products are produced as part of the OPERA project, which is funded by NASA to address remote sensing needs identified by the Satellite Needs Working Group, and managed by NASA's Jet Propulsion Laboratory. NASA JPL-Caltech ARIA/OPERA Team ================== Image acquisition times in UTC (local): 2025-12-17 2:00AM (local Pacific Time: 2025-12-16 6:00PM), 2025-12-15 2:00AM (local Pacific Time: 2025-12-14 6:00PM), 2025-12-14 2:00PM (local Pacific Time: 2025-12-14 6:00AM), 2025-12-11 2:00AM (local Pacific Time: 2025-12-10 6:00PM), 2025-12-10 2:00AM (local Pacific Time: 2025-12-09 6:00PM), 2025-12-07 2:00PM (local Pacific Time: 2025-12-07 6:00AM), 2025-12-05 2:00AM (local Pacific Time: 2025-12-04 6:00PM), 2025-12-02 2:00PM (local Pacific Time: 2025-12-02 6:00AM), 2025-11-29 2:00AM (local Pacific Time: 2025-11-28 6:00PM), 2025-11-28 2:00AM (local Pacific Time: 2025-11-27 6:00PM) Last Update 23 Dec. 2025
Full Metadata This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). The layers in this web service are derived from a dataset produced by Forest Trends' Ecosystem Marketplace containing points and polygons depicting the location of market-based programs and projects addressing ecosystem services protection and their enabling conditions in the United States. EnviroAtlas allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the conterminous United States as well as detailed metrics for select communities. Additional descriptive information about each attribute in this web service can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).
Full Metadata This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). The layers in this web service are derived from a dataset produced by Forest Trends' Ecosystem Marketplace containing points and polygons depicting the location of market-based programs and projects addressing ecosystem services protection and their enabling conditions in the United States. EnviroAtlas allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the conterminous United States as well as detailed metrics for select communities. Additional descriptive information about each attribute in this web service can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).
Primary ambient monitoring stations have ongoing water quality monitoring that oftentime extend for decades, making these stations ideal for studying water quality trends over time. The contributing basins are necessary to determine yields and understand land cover and uses that impact water quality. Contributing basins were derived using the StreamStats (USGS, 2017) web application . These data also include nutrient (total nitrogen and total phosphorus) loads and yields data for the basins included in the studies, Nutrient Loads and Yields in Kentucky: 2005-2017, and the Update to the 2019 Nutrient Loads and Yields in Kentucky Study, with a study period of 2005-2019.
Section 305(b) of the Clean Water Act requires states to assess the condition of the Waters of the US. The Kentucky Division of Water, in cooperation with other agencies, collects biological and water quality data to assess the condition of the resource and reports this to Congress every two years in the Integrated Report to Congress. (https://eec.ky.gov/Environmental-Protection/Water/Monitor/Pages/IntegratedReportDownload.aspx) These data represent the assessment results for surface waters of the Commonwealth of Kentucky. Box Download: https://ky.box.com/s/izlniops91lqzlh4o27yfepczmy0pdn8
National Wetland Inventory (NWI) 2023 mapping update and expanded attribution including Landscape, Landform, Water Flow Path, Waterbody (LLWW) and likely wetland functions were completed by the Colorado Natural Heritage Program for Boulder Open Space and Mountain Parks lands in Boulder County, Colorado. Mapping updates were funded through a U.S. Environmental Protection Agency Wetland Program Development Grant. Original features were developed for the U.S. Fish and Wildlife National Wetlands Inventory (NWI) program. Gabrielle Smith with the Colorado Natural Heritage Program (CNHP) updated the original NWI mapping to reflect current wetland locations and incorporate field data collected by Boulder Open Space and Mountain Parks (OSMP) staff during the 2024 growing season. Sarah Marshall (CNHP) reviewed the mapping and attributed the updated NWI mapping with Landscape, Landform, Water Flow Path, and Waterbody (LLWW) classification and modifiers, as well as likely wetland functions. City of Boulder Open Space and Mountain Parks (OSMP) staff perform ongoing updates to reflect current conditions. The Wetland and Riparian Areas data can be viewed along with additional reference data in the OSMP Wetland and Riparian Areas Experience.
Full Metadata This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). This map estimates the percent vegetated cover within 15 meters of hydrologically connected non-coastal waters. It is not summarized by census block group. For specific information about methods used to develop data for each community, consult their individual metadata records: Austin, TX; Birmingham, AL; Baltimore, MD; Brownsville, TX; Chicago, IL; Cleveland, OH; Des Moines, IA; Durham, NC; Fresno, CA; Green Bay, WI; Los Angeles, CA; Minneapolis/St. Paul, MN; Memphis, TN; Milwaukee, WI; New Bedford, MA; New Haven, CT; New York, NY; Philadelphia, PA; Phoenix, AZ; Pittsburgh, PA; Portland, ME; Paterson, NJ; Portland, OR; Salt Lake City, UT; Sonoma County, CA; St. Louis, MO; Tampa, FL; Virginia Beach/Williamsburg, VA; Washington, DC; and Woodbine, IA.
Full Metadata This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). The layers in this web service are derived from a dataset produced by Forest Trends' Ecosystem Marketplace containing points and polygons depicting the location of market-based programs and projects addressing ecosystem services protection and their enabling conditions in the United States. EnviroAtlas allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the conterminous United States as well as detailed metrics for select communities. Additional descriptive information about each attribute in this web service can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).
Section 305(b) of the Clean Water Act requires states to assess the condition of the Waters of the US. The Kentucky Division of Water, in cooperation with other agencies, collects biological and water quality data to assess the condition of the resource and reports this to Congress every two years in the Integrated Report to Congress. (https://www.water.ky.gov/sw/swmonitor/305b/) These data represent the assessment results for surface waters of the Commonwealth of Kentucky. Box Download: https://ky.box.com/v/energy-environment/file/850633543586
The USGS National Water Information System (NWIS) contains and provides access to inventory information about sites at stream reaches, wells, test holes, springs, tunnels, drains, lakes, reservoirs, ponds, excavations, and water-use facilities.Information for each site in the USGS data base can be retrieved for viewing and for download and import into other software, including GIS software. Includes links to all water data available for individual sites. Download Link: https://ky.box.com/v/kymartian-nwis-locations
A Total Maximum Daily Load (TMDL) Report is a water quality restoration plan that describes how pollutant loads in an impaired waterbody can be reduced to meet water quality standards. In a TMDL report, you will find the TMDL calculations establishing the allowable amount of a specific pollutant that an impaired waterbody can receive while still meeting water quality standards for each designated use. A TMDL report can contain multiple calculations and can address multiple waterbodies within a watershed.Additional information found in a TMDL report includes watershed information, the waterbody location, sampling data, pollutant sources, and strategies for meeting water quality standards. TMDL implementation plans and watershed management plans can be incorporated into TMDL reports. TMDL reports are developed by the Division of Water (DOW) and must be approved by the EPA. Box Download: https://ky.box.com/s/bdvw4gl3n0jtiuk5gvlfngms5rf2sdfk
Full Metadata This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). This web service includes layers depicting depicting NHD Version 2.1 Plus flowlines and waterbodies for the conterminous United States. Flowlines are separated out to display 3rd Order and smaller flowline features in one layer and 4th Order and higher flowline features in another. EnviroAtlas allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the conterminous United States as well as detailed metrics for select communities. Additional descriptive information about each attribute in this web service can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).
Full Metadata This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). This web service includes layers depicting depicting NHD Version 2.1 Plus flowlines and waterbodies for the conterminous United States. Flowlines are separated out to display 3rd Order and smaller flowline features in one layer and 4th Order and higher flowline features in another. EnviroAtlas allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the conterminous United States as well as detailed metrics for select communities. Additional descriptive information about each attribute in this web service can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).
Date of Images: 8/29/2018 Summary: Scientists at NASA's Marshall Space Flight Center created these water extents using Landsat imagery. These images can be used to see where open water is visible at the time of the satellite overpass. This product shows all water detected and differentiates between normal water areas and some flooded areas. This product was classified using the ESA Worldview. It's important to note that all flooded areas may not be captured do to the sensors limitations of not being able to "see" through vegetation and buildings. To determine where additional flooding may have occurred, combine this layer with other data sets. Suggested Use: This product shows water that is detected by the sensor with different colors indicating different land cover/land use classifications from CDL that appear to have water and are potentially flooded. Blue (1): Known Water Red (2): Flooded Developed Green (3): Flooded Vegetation Orange (4): Flooded Cropland/Grassland Gray (5): Clouds/Cloud Shadow (0): No Data Satellite/Sensor: Copernicus Sentinel-2 Resolution: 10 meters Credits: NASA/MSFC, USGS, ESA Copernicus Esri REST Endpoint: See URL section on the right side of page. WMS Endpoint: https://gis.earthdata.nasa.gov/portal/services/DISASTERS_EX2602_202405_FLOOD_BRAZIL/ex2602_sentinel2_WaterExtent/MapServer/WMSServer
Map Service providing results to HUC12NavRMS ann HUC12NavID scripts. Extract HUC 12s from selected point using up or down stream method, for a specified distance or number of HUCs.
The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Management Agency (FEMA), and any Letters of Map Revision (LOMRs) that have been issued against those databases since their publication date. It is updated on a monthly basis. The FIRM Database is the digital, geospatial version of the flood hazard information shown on the published paper FIRMs. The FIRM Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The FIRM Database is derived from Flood Insurance Studies (FISs), previously published FIRMs, flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by FEMA. The NFHL is available as State or US Territory data sets. Each State or Territory data set consists of all FIRM Databases and corresponding LOMRs available on the publication date of the data set. The specification for the horizontal control of FIRM Databases is consistent with those required for mapping at a scale of 1:12,000. This file is georeferenced to the Earth's surface using the Geographic Coordinate System (GCS) and North American Datum of 1983.
Full Metadata This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). The layers in this web service are derived from a dataset produced by Forest Trends' Ecosystem Marketplace containing points and polygons depicting the location of market-based programs and projects addressing ecosystem services protection and their enabling conditions in the United States. EnviroAtlas allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the conterminous United States as well as detailed metrics for select communities. Additional descriptive information about each attribute in this web service can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).
Section 305(b) of the Clean Water Act requires states to assess the condition of the Waters of the US. The Kentucky Division of Water, in cooperation with other agencies, collects biological and water quality data to assess the condition of the resource and reports this to Congress every two years in the Integrated Report to Congress. (https://eec.ky.gov/Environmental-Protection/Water/Monitor/Pages/IntegratedReportDownload.aspx) These data represent the assessment results for surface waters of the Commonwealth of Kentucky. Data Download: https://ky.box.com/s/x5tn2q7ryaiyiet1xxvwh16alueqxo4s
Section 305(b) of the Clean Water Act requires states to assess the condition of the Waters of the US. The Kentucky Division of Water, in cooperation with other agencies, collects biological and water quality data to assess the condition of the resource and reports this to Congress every two years in the Integrated Report to Congress. (https://www.water.ky.gov/sw/swmonitor/305b/) These data represent the assessment results for surface waters of the Commonwealth of Kentucky. Box Download: https://ky.box.com/v/energy-environment/file/850633894848