1.0 DCPLUS 20241113 23071400 20250423 23071400 https://www.arcgis.com/sharing/rest/content/items/ccc51ce9df404000ad581a7384b41804/info/thumbnail/thumbnail1745432091008.png https://www.arcgis.com/home/item.html?id=ccc51ce9df404000ad581a7384b41804 ccc51ce9df404000ad581a7384b41804 Feature Service https://services.arcgis.com/Ej0PsM5Aw677QF1W/arcgis/rest/services/NWI_Code_Definitions/FeatureServer National Wetland Inventory (NWI) Classification Lookup Table 2024-11-13T23:07:14 2025-04-23T18:14:51 NWI NWIPlus Wetlands This lookup table provides in depth descriptions of each component of the NWI classfication system, for use in the Watershed Mapping Toolbox application. <div>This table is a National Wetland Inventory classification code lookup table. It provides in depth descriptions of each component of the NWI / Cowardin classification. This has been tailored to King County's specific use in the Watershed Mapping Toolbox. Full details of the item from the U.S. Fish and Wildlife Service are below:</div><div><br /></div><div>NWI_Code_Definitions Table: The NWI Code Definitions table can provide users with the power to analyze wetlands data. Due to the complexity of the Cowardin Classification System, it is recommended that anyone engaging in wetland analysis to first contact: wetlands_team@fws.gov.  FWS personal can assist you to ensure you are using the code tables correctly, and therefore optimize your results. </div><div><br /></div><div>This table provides a crosswalk from U.S. Fish and Wildlife Service, National Wetlands Inventory (NWI) wetlands data, as defined by the Federal Wetland Mapping Standard, to the complete wetland definitions, as defined by the Federal Wetlands Classification Standard. </div><div><br /></div><div>To use this table, join it with a current NWI wetlands dataset using the 'Attribute' field. This will provide users with a full wetland or deepwater habitat description for each polygon. Please note that NWI datasets and associated tables are updated on a biannual basis, typically in October and May.</div><div><br /></div><div>To ensure you have the most up to date information, please refer to the published date in the metadata files, and download new data and tables regularly at https://www.fws.gov/wetlands/Data/Data-Download.html. </div> King County; National Wetland Inventory, U.S. Fish and Wildlife Service. King County data are made available with the understanding that they shall be used exclusively by the obtainer or his/her authorized agents. Digital products may not be reproduced or redistributed in any form or by any means without the express written authorization of King County.<div><br /></div><div>The information included on this digital document has been compiled by King County staff from a variety of sources and is subject to change without notice. King County makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of such information. This document is not intended for use as a survey product. King County shall not be liable for any general, special, indirect, incidental, or consequential damages including, but not limited to, lost revenues or lost profits resulting from the use or misuse of the information contained in this document. Any sale of this document or information contained in it is prohibited except by written permission of King County.</div> 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ccc51ce9df404000ad581a7384b41804 https://services.arcgis.com/Ej0PsM5Aw677QF1W/arcgis/rest/services/NWI_Code_Definitions/FeatureServer Feature Service