Beaver Library

The purpose of this research was to assess whether there is an integrated approach to providing both turtle passage and beaver exclusion from drainage culverts on highways managed by the Ministry of Transportation.

This paper describes the social and ecological context for current beaver problems, how WFCDs function, gives installation and maintenance tips, and presents results of two surveys that assessed the effectiveness of WFCDs in alleviating beaver flooding problems in Connecticut and Massachusetts.

The Beaver Patrol (in Juneau, Alaska) developed a culvert protector that allows in-stream movement of larger fish, turtles, and other animals, while preventing beavers from placing larger wood into culverts.

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.

Describes alternatives to control undesirable flooding caused by beavers at wetland restoration projects

A review of “The Best Management Practices: Long Term Solutions to Beaver Dam Flooding 2010”, an instructional DVD for flow devices

WBUR article following Mike Callahan and Beaver Solutions installing a flow device in Millis, MA

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.

The focus of this publication is to provide basic information on beaver ecology, damage, and management.

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

A cost analysis of beaver trapping versus nonlethal flow device use by the Virginia Dept. of Transportation

An indigenous tribe in Washington is strategically placing beavers around to help salmon.

Recent guidance from the federal government is, for the first time, promoting the importance of beavers in the recovery of endangered salmon.

This time lapse camera video shows chum salmon at Chico Creek navigating a beaver dam.

Beavers on the coast are helping salmon bounce back.