Beaver Library

A study of 482 flow devices by Beaver Solutions LLC in Massachusetts demonstrated that flow devices are the Best Management Practices for beaver dam flooding problems. Published by the Assoc. of MA Wetland Scientists, 2005.

Snohomish pond leveler design.

Mike Callahan, President of the nonprofit Beaver Institute discusses beavers, their value, and how to successfully manage beaver problems when they occur. Mike also shares information on the Connecticut Beaver Initiative (CBI) a new grant program to help landowners resolve human-beaver conflicts nonlethally.

Effective nonlethal methods to manage beaver conflicts are reviewed by Mike Callahan, Beaver Solutions LLC AS part of the USDA NRCS Webinar Series, 2017.

This 40 minute UMTC webinar teaches road crews the basics about how to prevent road flooding and infrastructure damage from beavers with cost-effective flow devices. Presented by Mike Callahan Beaver Institute. 2020.

This webinar was presented by the Clark Fork Coalition in Montana with beaver experts Mike Callahan, Beaver Institute, Elissa Chott, Clark Fork Coalition in MT, and Torrey Ritter, MT DFW. Topics covered include beaver benefits, challenges and solutions. 2020

A 44 minute Baltimore Sun podcast by Dan Rodricks on beavers and their impact. He interviews beaver experts Frances Backhouse, Mike Callahan, and Scott McGill on the history, present management and future of beavers in North America. Recorded in Feb. 2, 2018

This landmark 20 year study compares traditional lethal beaver control versus nonlethal management methods in the town of Billerica, MA. A total of 55 beaver conflict sites were studied. Sites that were managed with nonlethal control methods cost taxpayers significantly less than sites that were managed with beaver removal, and provided millions of dollars of ecological services to the town annually that would have been lost with beaver removal.

A 2003 landmark study of flow device success rates at 277 beaver-human conflict sites in Massachusetts.