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Wildlife Protection

Keeping It Simple: Easy Ways to Help Wildlife Along Roads

"Baffling Beavers" Promises Continued Fish Passage Through Culverts

If you're driving on State Highway 9 along the Blue River south of Breckenridge, Colorado, you probably won't notice the perforated pipes inside the beaver dams at several culvert entrances. That's because they're painted to look like the surrounding environment. Colorado Department of Transportation crews inserted the pipes into the dams because the structures were causing water to back up and over-saturate the roadfill, threatening the road's stability. The low-cost, easy-to-install, simple-to-maintain "beaver bafflers" will help fish as well as protect the roadway. Since the pipes lower pond levels and let more water pass through the culvert than what the beaver dam allows, beavers are "baffled" into discontinuing the maintenance and expansion of dams at the pipe-locations. Thanks to the perforated pipes, fish of the future will not be threatened by expanded dams blocking their passage. As for the beavers&the industrious animals have found plenty of other spots for new dams.
--Aug 21, 2006

Debra Angulski, (303) 365-7042 or

Photo of two workers standing in beaver pond near beaver dam working a post into the streambed
Wildlife Specialties L.L.C. photo
Installation of the beaver-baffling pipes.

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On or Along Waterways - Colorado
Updated: 12/12/2012
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