Southeast Michigan Council of Governments (SEMCOG)This table includes the code definitions for the Attribute field in the National Wetlands Inventory LLWFA dataset. This field consists of several sub-codes that interact with one another to produce thousands of possible values. By joining this table to the NWI LLWFA data for Southeast Michigan (available for download as the "Southeast Michigan Wetlands" layer in SEMCOG's Open Data Portal), it is possible to associate all of the relevant sub-code defiitions with each wetland feature.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/18bccf6e6fb2402383a2d53c21d84e72_54engSEMCOG Open DataPublicWetland Code Definitions [Michigan]Web servicesMichiganLast Modified: 2025-11-02