The Environmental Management Technical Center hosted the first Upper Midwest Gap Analysis Workshop to initiate the coordination and implementation of Gap Analysis in the states of Minnesota, Michigan, and Wisconsin. Presently, Gap Analysis projects are being completed on a state-by-state basis, depending on level of interest and need by each state. Because Gap Analysis provides a standardized method and format, as state projects are completed the data can be edge-matched with adjacent states to reveal actual patterns of biodiversity at scales relevant to both the magnitude of present-day changes and the multiple levels of biological organization. Gap Analysis products are being used by state and local governments, schools, and research institutions for many additional purposes. A significant volume of habitat diversity exists in the Upper Midwest, including tall grass prairie, oak savanna, boreal forest, northern hardwood forests, and a dune ecosystem. This biologically diverse habitat supports approximately one-third of the listed species and a significant portion of the candidate and rare species. The purpose of this workshop is to identify cooperators and to initiate implementation of Gap Analysis in the Upper Midwest.