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Wisconsin has emerged as a national and world leader in the selective removal of dams, many of which have become unsafe, uneconomical, or otherwise obsolete. These actions have demonstrated that selectively removing dams can help restore river ecosystems, improve fish and wildlife populations, and increase recreational opportunities. With the increasing availability of ecological data, and improvements to spatial analysis tools, there exists an opportunity for improving the 'selectivity' of selective dam removal with respect to the restoration of river ecosystems. Specifically, by using a GIS to examine those river attributes that are traditionally affected by dam removals, it is possible to prioritize existing dams based on the predicted ecological benefits of their removal.