The beaver baffler is an effective long-term solution for discouraging beavers from using your property, or areas adjacent to your property, for the construction of their dams. This device is made from one or two large-diameter drain pipes (7.5 to 10 cm) that are installed through the dam, with one end in the deep part of the pond and the other downstream, far away from the dam. The water flows through the dam into the downstream region, lowering the water level in the area surrounding the beaver dam. The distance between the dam and the drain outlet is important because beavers are attracted to the sound of running water and are compelled by instinct to dam it up. The farther the distance from the dam, the greater the success in confusing the beaver. Because the drain is under the surface of the water, the beavers are unlikely to discover why they can’t control the water level in the pond and eventually they will become discouraged and move on, leaving behind a small pond. Over time new beavers may move in, but they will not stay long if they can’t increase the depth of the pond. Periodic maintenance of the baffler is required. Installation is sometimes done with the help of local naturalist or hunter groups who have an interest in maintaining ponds as wildlife habitat.
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