zip file that contains the following layers: Downloading Dataĭata can be downloaded by HUC 8 Watershed Boundary or by State. Please read the Disclaimer, Data Limitations, Exclusions, and Precautions, and the Wetlands Geodatabase User Caution. 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.
Those updates are reflected on the Wetlands Mapper and in the data downloads in October and May of each year. Please note that NWI data is continuously being improved and new data is added on a biannual basis. For downloads larger than a state, please contact the Wetlands Team to request a custom download. If you need to conduct GIS analysis please reference the information below to download the data by watershed or by state. This will ensure you have the latest data and reduce data management overhead.
POLLYZON NORTH CAROLINA SOFTWARE
To display and query wetlands data in your software application please use our Web Map Services. National Wetlands Inventory (NWI) data can be accessed in several ways depending on your needs.
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