NWI maps were used by the State of Vermont Agency of Natural resources as a means of creating this data layer in conjunction with the VSWI. The NWI and VSWI were joined by a union, to create the new 2010 Vermont Significant Wetland Inventory data layer, representing Vermont's regulatory wetlands. The VSWI prior to 2010 was created by hand digitizing nearly two-thirds of Vermont's wetlands from RF 24000 scale NWI mylars. The remainder of the state was scanned from RF 24000 or RF 25000 scale mylars.These mylars were created by transfering wetland polygon boundaries from RF 62500 scale NWI mylars to RF 24000 scale base maps.
The wetlands in the WaterWetlands_VSWI coverage are mainly palustrine complexes (regulatory). A smaller subset of the data define riverine and lacustrine wetland complexes (regulatory). Single line streams are not included. The wetlands in this coverage are those regarded as regulatory by the VT Water Resources Board. They correspond to the outer boundaries of palustine areas mapped by the USFWS NWI section with the following exceptions (includes some riverine and lacustrine wetlands).
See Feature Accuracy for details on the accuracy of the source maps.This data layer is intended for planning and informational use, to alert the public to the presence of regulated wetlands. This data layer is not designed to be used as sole criteria in any decision making process. Questions about wetland location and use should be referred to the ANR DEC Wetlands section, 244-6951.