Scientific and Natural Area Units

To provide a multi-part polygon view of SNA Units for use in the SNA Work Planning - Activities application. The original purpose for digitizing SNAs was to include them on the Minnesota County Biological Survey's maps of natural communities and rare species. This began in 1989. The Peatland SNAs were digitized 1993 for the generation of a series of maps showing existing trails withing these SNAs. Many prairie SNAs with burn units were digitized in 1995-6 for management purposes. The remaining SNAs were digitized in 1996-99 to complete the SNA cover statewide.