MBI Maine Rivers IBI Development Center for Applied Bioassessment & Biocriteria Midwest Biodiversity Institute P.O. Box 21561 Columbus, OH 43221-0561 M Ma a i i n n e e R R i i v v e e r r s s F F i i s s h h A A s s s s e e m m b b l l a a g g e e Assessment: Development of an Index of Biotic Integrity for Non-wadeable Rivers MBI Technical Report MBI/2008-11—2 March 8, 2009 (Addendum March 31, 2016) Chris O. Yoder, Principal Investigator Roger F. Thoma, Senior Research Associate Lon E. Hersha, Research Associate Center for Applied Bioassessment & Biocriteria Midwest Biodiversity Institute P.O. Box 21561 Columbus, OH 43221-0561 mbi@mwbinst.com Edward T. Rankin, Senior Research Associate Ohio University Voinovich School for Leadership and Public Affairs The Ridges, Building 22 Athens, OH 45701 Brandon H. Kulik and Bryan R. Apell Kleinschmidt Associates 141 Main Street Pittsfield, ME 04967