Download Seamless Wetlands Data by State

Please note that NWI data is continuously being improved and new data is added on a biannual basis. Those updates are reflected on the Wetlands Mapper and in the data downloads in October and May of each year. To ensure that you have the most up to date information, please refer to the published date in the metadata, the location of new data on the Projects Mapper and download new data regularly. For downloads larger than a state, please contact the Wetlands Team (wetlands_team@fws.gov) to request a custom download.

Each State data download is available as either a compressed file Geodatabase, Shapefile (PDF)or GeoPackage. All files are compressed by using the .zip format and contain the following layers:

  • Wetlands polygon data
  • Wetlands Project Metadata (includes image dates and project information)
  • Wetlands Historic Map Information*
  • Riparian polygon data*
  • Riparian Project Metadata (includes image dates and project information) *
  • Watershed Boundary Dataset (WBD) HUC8 modified**

* If available at the requested location.
** Not include in State downloads.

Not all of Alaska has been digitally mapped by the U.S. Fish and Wildlife Service. Please refer to the Wetlands Mapping Status layer in the Wetlands Mapper Legend to view where wetlands have been mapped in Alaska. The state downloads include a Wetlands Project Metadata layer that identifies where and when wetlands were mapped within the state.

Due to the amount of data being downloaded, the resulting time to download each file may take up to 60 minutes or more, and each file can range in sizes from 1MB to approximately 4GB.

NOTE: Due to the variation in use and analysis of this data by the end user, each of states wetlands data extends beyond the state boundary. Each state includes wetlands data that intersect the 1:24,000 quadrangles that contain part of that state (1:2,000,000 source data). This allows the user to clip the data to their specific analysis datasets. Beware that two adjacent states will contain some of the same data along their borders.  

State/Territory Downloads (file downloads last updated May 17, 2024)
State/TerritoryPreferred Download Type
AlabamaGeodatabase / Shapefile / GeoPackage
AlaskaGeodatabase / Shapefile/ GeoPackage
ArizonaGeodatabase / Shapefile/ GeoPackage
ArkansasGeodatabase / Shapefile/ GeoPackage
CaliforniaGeodatabase / Shapefile/ GeoPackage
ColoradoGeodatabase / Shapefile/ GeoPackage
ConnecticutGeodatabase / Shapefile/ GeoPackage
DelawareGeodatabase / Shapefile/ GeoPackage
District of ColumbiaGeodatabase / Shapefile/ GeoPackage
FloridaGeodatabase / Shapefile/ GeoPackage
GeorgiaGeodatabase / Shapefile/ GeoPackage
HawaiiGeodatabase / Shapefile/ GeoPackage
IdahoGeodatabase / Shapefile/ GeoPackage
IllinoisGeodatabase / Shapefile/ GeoPackage
IndianaGeodatabase / Shapefile/ GeoPackage
IowaGeodatabase / Shapefile/ GeoPackage
KansasGeodatabase / Shapefile/ GeoPackage
KentuckyGeodatabase / Shapefile/ GeoPackage
LouisianaGeodatabase / Shapefile/ GeoPackage
MaineGeodatabase / Shapefile/ GeoPackage
MarylandGeodatabase / Shapefile/ GeoPackage
MassachusettsGeodatabase / Shapefile/ GeoPackage
MichiganGeodatabase / Shapefile/ GeoPackage
MinnesotaGeodatabase / Shapefile/ GeoPackage
MississippiGeodatabase / Shapefile/ GeoPackage
MissouriGeodatabase / Shapefile/ GeoPackage
MontanaGeodatabase / Shapefile/ GeoPackage
NebraskaGeodatabase / Shapefile/ GeoPackage
NevadaGeodatabase / Shapefile/ GeoPackage
New HampshireGeodatabase / Shapefile/ GeoPackage
New JerseyGeodatabase / Shapefile/ GeoPackage
New MexicoGeodatabase / Shapefile/ GeoPackage
New YorkGeodatabase / Shapefile/ GeoPackage
North CarolinaGeodatabase / Shapefile/ GeoPackage
North DakotaGeodatabase / Shapefile/ GeoPackage
OhioGeodatabase / Shapefile/ GeoPackage
OklahomaGeodatabase / Shapefile/ GeoPackage
OregonGeodatabase / Shapefile/ GeoPackage
Pacific Trust IslandsGeodatabase / Shapefile/ GeoPackage
PennsylvaniaGeodatabase / Shapefile/ GeoPackage
Puerto Rico and Virgin IslandsGeodatabase / Shapefile/ GeoPackage
Rhode IslandGeodatabase / Shapefile/ GeoPackage
South CarolinaGeodatabase / Shapefile/ GeoPackage
South DakotaGeodatabase / Shapefile/ GeoPackage
TennesseeGeodatabase / Shapefile/ GeoPackage
TexasGeodatabase / Shapefile/ GeoPackage
UtahGeodatabase / Shapefile/ GeoPackage
VermontGeodatabase / Shapefile/ GeoPackage
VirginiaGeodatabase / Shapefile/ GeoPackage
WashingtonGeodatabase / Shapefile/ GeoPackage
West VirginiaGeodatabase / Shapefile/ GeoPackage
WisconsinGeodatabase / Shapefile/ GeoPackage
WyomingGeodatabase / Shapefile/ GeoPackage

Related Resources & Information

Large pool of water surrounded by low tundra grasses under cloud covered sky.
The U.S. Fish and Wildlife Service is the principal federal agency tasked with providing information to the public on the extent and status of the nation’s wetland and deepwater habitats, as well as changes to these habitats over time.