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Federal
USFWS National Wetlands Inventory NGDA
Department of the Interior —
This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the United States and its Territories. These data delineate... -
Wetland Inventory
District of Columbia —
This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the United States and its Territories. These data delineate... -
Federal
National Riparian Area Base Map
Department of Agriculture —
This imagery layer shows national riparian areas for the conterminous United States. Riparian areas are an important natural resource with high biological diversity.... -
Federal
Wetlands in the state of Arizona
Department of the Interior —
We created a single map of surface water presence by intersecting water classes from available land cover products (National Wetland Inventory, Gap Analysis Program,... -
State
Connecticut NWI Wetlands 2024
State of Connecticut —
This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the United States and its Territories. These data delineate... -
Federal
Lane_etal_WhatRemains
U.S. Environmental Protection Agency —
Clean Water Act (CWA) coverage extends to certain wetlands, including those with a continuous surface connection to relatively permanent tributaries. However, limited... -
State
Salt Marsh
State of Maryland —
These digital data files are records of salt marsh location and extent as defined by the U.S. Fish & Wildlife Service's National Wetlands Inventory (NWI) program.... -
Federal
Environmental Sensitivity Index (ESI) Data Viewer and Data Services for Atlases NGDA
National Oceanic and Atmospheric Administration, Department of Commerce —
ESI data characterize the marine and coastal environments and wildlife based on sensitivity to spilled oil. There are three main components: shoreline habitats,... -
Federal
LEAN-Corrected Collier County DEM for wetlands
Department of the Interior —
Lidar-derived digital elevation models often contain a vertical bias due to vegetation. In areas with tidal influence the amount of bias can be ecologically... -
Federal
LANDFIRE Environmental Site Potential NGDA
Department of the Interior —
The LANDFIRE vegetation layers describe the following elements of existing and potential vegetation for each LANDFIRE mapping zone: environmental site potentials,... -
Federal
EnviroAtlas – San Diego, CA – Meter-Scale Urban Land Cover (MULC) Data (2014)
U.S. Environmental Protection Agency —
The San Diego, CA Meter Urban Land Cover (MULC) dataset was generated from sub-meter image pixel resolution data created by the University of Vermont (UVM) Spatial... -
Federal
EnviroAtlas -- St. Louis, MO -- Meter-Scale Urban Land Cover Data (MULC) Data (2016)
U.S. Environmental Protection Agency —
The EnviroAtlas St. Louis, Missouri Meter-Scale Urban Land Cover (MULC) dataset comprises 4188 km2 around the city of St. Louis and surrounding land in parts of... -
State
Salt Marsh
State of Maryland —
These digital data files are records of salt marsh location and extent as defined by the U.S. Fish & Wildlife Service's National Wetlands Inventory (NWI) program.... -
State
Salt Marsh
State of Maryland —
These digital data files are records of salt marsh location and extent as defined by the U.S. Fish & Wildlife Service's National Wetlands Inventory (NWI) program.... -
State
Wetlands - Linear - Special State Concern
State of Maryland —
In Maryland certain wetlands with rare, threatened, endangered species or unique habitat receive special attention. The Code of Maryland Regulations (COMAR) Title 26,... -
State
Wetlands - Linear - Department of Natural Resources
State of Maryland —
The Maryland Department of Natural resources began updating the National Wetlands Inventory (NWI) mapping of wetlands in Maryland in the early 1990s. This database... -
Federal
EnviroAtlas - Percent Potential Wetland Area by 12-digit HUC for the Conterminous United States
U.S. Environmental Protection Agency —
The Percentage Potential Wetland Area by HUC-12 (Pct_PWA) layer shows areas where conditions may be suitable for wetland restoration or creation at a 10-m resolution.... -
Federal
Russian River Integrated Hydrologic Model (RRIHM): Watershed Vegetation Cover
Department of the Interior —
This data release is a subset of the 2010 LANDFIRE Existing Vegetation Cover, covering the Russian River watershed. This LANDFIRE data was downloaded and processed in... -
State
MD iMAP: Maryland Wetlands - Wetlands Polygon (Department of Natural Resources)
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. The Maryland Department of Natural resources began updating the National... -
Federal
Linear Ditches of Northeastern U.S. Coastal Marshes from Maine to Virginia Derived from 2023 2D Aerial Imagery Basemap
Department of the Interior —
Salt marshes of the Northeastern United States (Maine to Virginia) are vulnerable to loss given their history of intensive human alteration. One direct human...