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Information about Beavers

King County Beaver Management Technical Paper #3, Life History and Ecology Best Science Paper, goes into detail about many aspects of beaver life history and ecology.

National Wildlife Federation: Beavers, Water, and Fire—A New Formula for Success

National Wildlife Federation: Beavers as Ecopartners 


Have a beaver pond and want to know what to do? Check out our Decision Flow Chart.

Want to know what possible solutions are available to help with beaver-related issues? Our solutions matrix provides a summary, and our Beaver Management Technical Paper #1, Beaver Management Tools Literature Review and Guidance, goes into a lot of detail about different types of these tools.


WDFW Hydraulic Project Approval (HPA)

King County Clearing and Grading Permits

Technical Assistance

Beavers Northwest, a non-profit based out of the King-Snohomish county area of Washington State. They specialize in providing technical advice to property owners who are experiencing beaver conflicts.

Beaver Solutions, a non-profit based out of Massachusetts. They provide technical and financial assistance to public and private landowners experiencing beaver conflicts.

Beaver Management Devices

Below are links to various types of hydraulic solutions to beaver flooding.

The Flexible Leveler. A description of one type of hydraulic solution that is inexpensive, generally works well, and is currently the most common flow device in use in the region.

Pond leveler construction description, by Beavers Northwest. 

The Use of Water Flow Devices in Addressing Flooding Problems Caused by Beaver in Massachusetts by Massachusetts Department of Fisheries & Wildlife.

The Clemson Beaver Pond Leveler, developed at Clemson University with two goals: the need to suppress the problem of flooding agricultural and timber lands and to maintain or improve some of the benefits derived from beaver ponds.

Managing Nuisance Beavers Along Roadsides; a Guide for Highway Departments by Cornell University's Department of Natural Resources and the Division of Fish, Wildlife, and Marine Resources, New York State Department of Environmental Conservation.

Building a Beaver Deceiver. Photo-documentation of the process of installing "beaver deceivers" at Peterson Pond in King County.

WDFW Beavers page, includes designs for culvert fencing and pond levelers.

Our Beaver Management Technical Paper #1, Beaver Management Tools Literature Review and Guidance, goes into a lot of detail about different types of these tools.

Washington Hunting and Trapping

Washington Department of Fish and Wildlife (WDFW) furbearer trapping seasons and rules, including links to seasons and rules. 

WDFW information on hiring a Wildlife Control Operator (WCO) and list of Nuisance WCOs in Washington.

WDFW's web page on live trapping and relocation in Western Washington.

The Tulalip Beaver Project, which relocates beavers to hydrologically impaired tributaries in the upper Snohomish Watershed. 

Also check out our fact sheet on Current Laws, Policies, and Practices, or the full report, Beaver Management Technical Paper #2, Current Laws, Policies, and Practices.


Beavers in the News

The Seattle Times, June 6, 2021: The enchanting world of beavers in King County — and how they might benefit a warming planet

Center for Humans and Nature, December 11, 2018: In Praise of Urban Beavers

The Atlantic, December 4, 2018: The Re-beavering of the American West 

Kitsap Sun, December 3, 2018: Busy beavers create salmon habitat in Kitsap 

KUOW, December 17, 2018: This story will make you a Beaver Believer, Bill Radke interview Ben Goldfarb

Crosscut, November 28, 2018: To fix salmon streams, leave it to beaver

Biographic, November 22, 2018: They will build it (a story map written by Ben Goldfarb)

NPR Weekend Edition, June 24, 2018: The Bountiful Benefits of Beavers (by Luke Runyon, including interview with Ben Goldfarb)

High Country News, February 20, 2018: In Oregon, a peculiar case for protecting the beaver 

Herald Net, Everett Washington, May 9, 2017: Troublesome dams in Mill Creek fixed by the ‘beaver deceiver’