Beaver pipes are a non-destructive flow devices, a way of controlling beaver activity in an ecosystem. The process of building beaver pipes is quite simple, and often serves as a permanent way to prevent beavers from damming water.^[1]

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Managers of the watershed of the Enzo Creek Nature Sanctuary experienced the all too common problem with beavers: their tenacious desire to dam water. The water level at Enzo Creek Nature Sanctuary had been growing year after year, impacting the fauna in Hunt Marsh, an 18-acre (73,000 m²) wetland which serves as both a waterfowl nesting area and refuge. Managers physically removed the dams from Enzo Creek, the only outlet to the watershed; however, beavers would quickly work to rebuild them. Lethal removal of beavers from the marsh was contrary to the mission of the sanctuary, so the non-lethal method of beaver pipes was approved and adopted.

The construction of these beaver pipes at Enzo Creek Nature Sanctuary was a two-day project for one person and involved the following steps:

1. Slowly lower the water level behind the dam.
2. Insert pipes across the notch.
3. Allow beavers to complete the project.