- Metric Name:  Wetland Type Composition

- Data Vintage:  2018

- Unit Of Measure: Thematic

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

Creation Method: Downloaded from the National Wetlands Inventory (NWI), polygon converted to 30 meter raster. For more information see https://www.fws.gov/program/national-wetlands-inventory. List of values: 

- Lake = Lake or reservoir basin. Lacustrine wetland and deepwater (L).

- Freshwater Emergent Wetland = Herbaceous marsh, fen, swale and wet meadow. Palustrine emergent (PEM).

- Estuarine and Marine Wetland = Vegetated and non-vegetated brackish and saltwater marsh, shrubs, beach, bar, shoal or flat. Estuarine intertidal and Marine intertidal wetland (E2, M2).

- Other = Farmed wetland, saline seep and other miscellaneous wetland. Palustrine wetland (Misc. types, PUS, Pf..)

- Freshwater Pond = Pond. Palustrine unconsolidated bottom, Palustrine aquatic bed (PUB, PAB).

- Estuarine and Marine Deepwater = Open water estuary, bay, sound, open ocean. Estuarine and Marine subtidal water (E1, M1).

- Riverine = River or stream channel. Riverine wetland and deepwater (R).

- Freshwater Forested/Shrub Wetland = Forested swamp or wetland shrub bog or wetland. Palustrine forested and/or Palustrine shrub (PFO, PSS).

- Credits:  The National Wetlands Inventory, US Fish & Wildlife Service (USFWS)

US Fish and Wildlife Service (USFWS) : 
Data disclaimer:  
The use of trade, product, industry or firm names is for informative purposes only and does not constitute an endorsement by the U.S. Fish and Wildlife Service. Link to non-Service Web sites do not imply any official U.S. Fish and Wildlife Service endorsement of the opinions or ideas expressed therein or guarantee the validity of the information provided. Base cartographic information used as part of the Wetlands Mapper has been provided through a license agreement with ESRI and the Department of the Interior.



The National Wetlands Inventory, US Fish & Wildlife Service (USFWS)

U.S. Fish and Wildlife Service (USFWS): 
Data disclaimer:  
The use of trade, product, industry or firm names is for informative purposes only and does not constitute an endorsement by the U.S. Fish and Wildlife Service. Link to non-Service Web sites do not imply any official U.S. Fish and Wildlife Service endorsement of the opinions or ideas expressed therein or guarantee the validity of the information provided. Base cartographic information used as part of the Wetlands Mapper has been provided through a license agreement with ESRI and the Department of the Interior.