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Beaver populations have increased significantly during the last half century and have spread across most areas of the country. As beaver populations expand, the problems created when they instinctively dam culverts become a concern for road engineers and maintenance crews. MTDC, with the assistance of U.S. Department of Agriculture Animal and Plant Health Inspection Service National Wildlife Research Center experts, published a report detailing methods to prevent beavers from plugging culverts.

The report, How
to Keep Beavers from Plugging Culverts (0577–2830–MTDC), also discusses
methods tried successfully and unsuccessfully by Forest Service personnel.
For more information, contact Andy Trent, project leader (phone: 406–329–3912; fax: 406–329–3719; e-mail: atrent@fs.fed.us).
To order a copy of the report, contact Cailen Hegman, MTDC publications (phone: 406–329–3719; e-mail: cahegman@fs.fed.us).
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