Resources Activity Stream About Order by Relevance Name Ascending Name Descending Last Modified Go 1 resource found Categories: Inland Waters Tags: hydrography swamp Filter Results National Wetland Inventory for Minnesota – Historical (1980 – 1986) Wetland area features mapped as part of the National Wetlands Inventory (NWI). The National Wetlands Inventory is a national program sponsored by the US Fish and Wildlife... JPEG fgdb SHP HTML