In an effort to get a better understanding of long-term trends on the lake, the University of
Minnesota, in cooperation with Region 3 of the U.S. Fish and Wildlife Service has created a series of
digitized spatial databases to document the distribution of wild rice on Rice Lake from 1983 through
2004. Aerial photos from seven individual years in that time period – 1983, 1993, 1995, 1996, 1998,
2001 and 2004 – were digitized, orthorectified and used as a thematic reference to create a threeclass
representation (wild rice, other vegetation, and open water) of lake vegetation in a geographic
information system (GIS) for each of the years analyzed. To create a spatial analysis of the wild rice
and ‘other vegetation’ distribution over the entire time period, data from all the years were combined
to produce a composite map.
Research supported by Cooperative Agreement USDI/1434-HQ-97-RU-01566 WO 49 between
the University of Minnesota and the U.S. Fish and Wildlife Service.
Gonsoski, James A.; Burk, Thomas E.; Bolstad, Paul V.; Balogh, Mary.
Rice Lake National Wildlife Refuge : historic wild rice mapping (1983 – 2004).
University of Minnesota.
Retrieved from the University of Minnesota Digital Conservancy,
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