12 datasets found
  1. d

    Wetlands - National Wetlands Inventory

    • catalog.data.gov
    • opendata.maryland.gov
    Updated Oct 11, 2025
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    opendata.maryland.gov (2025). Wetlands - National Wetlands Inventory [Dataset]. https://catalog.data.gov/dataset/wetlands-national-wetlands-inventory
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    Dataset updated
    Oct 11, 2025
    Dataset provided by
    opendata.maryland.gov
    Description

    This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps. Last Updated: 1992

  2. g

    Wetlands - National Wetlands Inventory | gimi9.com

    • gimi9.com
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    Wetlands - National Wetlands Inventory | gimi9.com [Dataset]. https://gimi9.com/dataset/data-gov_wetlands-national-wetlands-inventory/
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    Description

    This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps. Last Updated: 1992

  3. w

    National Wetlands Inventory 2006

    • data.wu.ac.at
    zip
    Updated Apr 25, 2015
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    State of California (2015). National Wetlands Inventory 2006 [Dataset]. https://data.wu.ac.at/schema/data_gov/MjlhNTkxZTItZmM5Mi00ZjNlLWExOTItNzE5YzkwN2I5MzVh
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    zipAvailable download formats
    Dataset updated
    Apr 25, 2015
    Dataset provided by
    State of California
    Area covered
    bccdcda179a2838bab653178731c129c72b70d50
    Description

    This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979).

  4. a

    Wetlands

    • data-yorkcountypa.opendata.arcgis.com
    • equitable-property-valuation-gimsoh29.hub.arcgis.com
    • +4more
    Updated Feb 26, 2018
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    York County, Pennsylvania (2018). Wetlands [Dataset]. https://data-yorkcountypa.opendata.arcgis.com/datasets/wetlands
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    Dataset updated
    Feb 26, 2018
    Dataset authored and provided by
    York County, Pennsylvania
    Area covered
    Description

    This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps.

  5. m

    Maryland Wetlands - Wetlands (National Wetlands Inventory)

    • data.imap.maryland.gov
    Updated Jan 1, 1992
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    ArcGIS Online for Maryland (1992). Maryland Wetlands - Wetlands (National Wetlands Inventory) [Dataset]. https://data.imap.maryland.gov/datasets/maryland::maryland-wetlands-wetlands-national-wetlands-inventory/about?layer=2
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    Dataset updated
    Jan 1, 1992
    Dataset authored and provided by
    ArcGIS Online for Maryland
    Area covered
    Description

    This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps.This is a MD iMAP hosted service layer. Find more information at https://imap.maryland.gov.Feature Service Layer Link:https://geodata.md.gov/imap/rest/services/Hydrology/MD_Wetlands/MapServer/2

  6. a

    Wetlands - Federally Registered (USFWS, NWI)

    • hub.arcgis.com
    Updated Feb 12, 2015
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    University at Buffalo, College of Arts and Sciences (2015). Wetlands - Federally Registered (USFWS, NWI) [Dataset]. https://hub.arcgis.com/datasets/01605bff977f4dcda5106dddca61da75_1
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    Dataset updated
    Feb 12, 2015
    Dataset authored and provided by
    University at Buffalo, College of Arts and Sciences
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Area covered
    Description

    This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps.

  7. a

    Maryland Wetlands - Wetlands (National Wetlands Inventory)

    • data-maryland.opendata.arcgis.com
    Updated Jan 1, 1992
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    ArcGIS Online for Maryland (1992). Maryland Wetlands - Wetlands (National Wetlands Inventory) [Dataset]. https://data-maryland.opendata.arcgis.com/datasets/maryland::maryland-wetlands-wetlands-national-wetlands-inventory/explore?location=39.443118%2C-76.283105%2C14.56
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    Dataset updated
    Jan 1, 1992
    Dataset authored and provided by
    ArcGIS Online for Maryland
    Area covered
    Description

    This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps.This is a MD iMAP hosted service layer. Find more information at https://imap.maryland.gov.Feature Service Layer Link:https://mdgeodata.md.gov/imap/rest/services/Hydrology/MD_Wetlands/MapServer/2

  8. a

    Wetlands NWI OpenData

    • hub.arcgis.com
    Updated Sep 25, 2015
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    sgl55 (2015). Wetlands NWI OpenData [Dataset]. https://hub.arcgis.com/datasets/36c39ac497954894ae34bdcf361b984d
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    Dataset updated
    Sep 25, 2015
    Dataset authored and provided by
    sgl55
    Area covered
    Description

    This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps.

  9. a

    Area Wetlands

    • evvc-evvc.opendata.arcgis.com
    Updated Apr 24, 2024
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    Evansville/Vanderburgh County GIS (2024). Area Wetlands [Dataset]. https://evvc-evvc.opendata.arcgis.com/datasets/8db1a8ca033244428698d184835f190d
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    Dataset updated
    Apr 24, 2024
    Dataset authored and provided by
    Evansville/Vanderburgh County GIS
    Area covered
    Description

    This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps.

  10. a

    Wetlands (NWI)

    • gis-sccmo.opendata.arcgis.com
    • arc-gis-hub-home-arcgishub.hub.arcgis.com
    Updated Mar 20, 2019
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    St. Charles County Government (2019). Wetlands (NWI) [Dataset]. https://gis-sccmo.opendata.arcgis.com/datasets/8f72c6ec4104459da2736323637b55c4
    Explore at:
    Dataset updated
    Mar 20, 2019
    Dataset authored and provided by
    St. Charles County Government
    Area covered
    Description

    This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps.

  11. a

    Wetlands

    • imagem.hub.arcgis.com
    Updated Jan 24, 2025
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    Imagem - Inteligência Geográfica inspirando o futuro (2025). Wetlands [Dataset]. https://imagem.hub.arcgis.com/datasets/wetlands/api
    Explore at:
    Dataset updated
    Jan 24, 2025
    Dataset authored and provided by
    Imagem - Inteligência Geográfica inspirando o futuro
    Area covered
    Description

    This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps. The data and related materials are made available through Esri (http://www.esri.com) and are intended for educational purposes only (see Access and use limitations section).

  12. D

    Wetlands, 2015

    • detroitdata.org
    Updated Feb 15, 2024
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    Southeast Michigan Council of Governments (SEMCOG) (2024). Wetlands, 2015 [Dataset]. https://detroitdata.org/dataset/wetlands-2015
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    geojson, csv, html, zip, kml, arcgis geoservices rest apiAvailable download formats
    Dataset updated
    Feb 15, 2024
    Dataset provided by
    Southeast Michigan Council of Governments (SEMCOG)
    Description

    This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps. In addition to updated NWI maps (2015) the Landscape Level Wetland Functional Assessment (LLWFA) has been added to these wetland areas. The Department of Environment Great Lakes and Energy (EGLE) has been working since 2006 on refining and expanding the use of the LLWFA across much of the state. Each year, EGLE Nonpoint Source Unit is the main entity which distributes 319 watershed planning funds to local units of government, non-profit organizations, and numerous other state, federal, and local partners to reduce nonpoint source pollution statewide. Their yearly prioritization of watershed planning efforts directly influenced the completion of LLWFA efforts, and the scale at which they work is a perfect fit for this landscape level wetland information. This approach addresses both a current (2015) wetland inventory and a Pre-European Settlement inventory, to approximate change over time, and provide the best information possible on wetland status and trends from original condition through today. These watershed planning organizations have utilized these tools to help them better evaluate projects for preserving or enhancing their current wetland resources and planning for restoration of lost resources. Restoring lost wetland functionality shows great promise in addressing the systemic cause of much of the non-point source pollution occurring in the state. The 2015 NWI update is ongoing throughout the state.

    Detailed Wetland Code Descriptions can be found using the link below. This provides a crosswalk from U.S. Fish and Wildlife Service, National Wetlands Inventory (NWI) wetlands data, as defined by the Federal Wetland Mapping Standard, to the complete wetland definitions, as defined by the Federal Wetlands Classification Standard. The table can be joined with the NWI wetlands data using the 'Attribute' field. This will provide users with a full wetland or deepwater habitat description for each polygon.

    https://maps-semcog.opendata.arcgis.com/datasets/SEMCOG::wetland-code-definitions-2015

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opendata.maryland.gov (2025). Wetlands - National Wetlands Inventory [Dataset]. https://catalog.data.gov/dataset/wetlands-national-wetlands-inventory

Wetlands - National Wetlands Inventory

Explore at:
70 scholarly articles cite this dataset (View in Google Scholar)
Dataset updated
Oct 11, 2025
Dataset provided by
opendata.maryland.gov
Description

This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps. Last Updated: 1992

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