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Wetlands Digital Data Wetlands Mapper Download Wetlands Data Wetlands Mapper Information Introduction Layers and Metadata History and Changes Map Creation and Mapper Display Wetlands Codes OGC Web Map Service Disclaimer Supplemental Information MGD Info Quality Guidelines Attribution and Verification Tools Mapping Information Product Summary Wetland Definition and Classification Data Limitations and Uses Contributed Wetlands Data Regional Map Information NWI Regions and Contacts NWI Status Information Cooperative Distribution Centers (Hard-copy Maps) Homepage Questions and Comments 508 Accessibility |
Wetland CodesWetland Code InterpreterTHE CODES: A series of letter and number codes has been developed to adapt the national wetland classification system to map form. These alpha-numeric codes correspond to the classification nomenclature that best describes the habitat. (for example, PFO1A) THE INTERPRETER: This tool will instantly provide the detailed habitat descriptions for an area represented by the wetland code. Enter a wetland area's map code into the interpreter and obtain the classification of that wetland area as defined in Cowardin et al (1979). Wetland plant species information is also available. Wetlands and Deepwater Habitats Classification HierarchyMap code diagram (PDF file) shows relationship of wetland systems (ex: estuarine), subsystems (ex: intertidal), and classes (ex: emergent wetland).National Wetlands Classification StandardOur map codes of wetland habitat types use the classification system in this Service publication: Classification of Wetlands and Deepwater Habitats of the United States, 1979, by Cowardin, Lewis M. et al. |
In Cooperation with the U.S. Geological Survey