Add a spillway to the dam and stop flooding permanently.
How it works:
A cage on the underwater intake keeps beavers out and makes the drain silent and invisible to them. The pipe gets water past the dam, and it’s the beavers’ own instincts that keep them from blocking the outflow. Since it’s downstream of their dam, where the water is always noisy anyway, they ignore it. As far as they’re concerned, that dam will only hold as much water as you decide, permanently.
One-Day Flooding Abatement
Device installation happens in one working day, most ponds take overnight to drain, and by the next morning your flooding issues will be resolved.
Here’s some info from the CalTrans build, showing how fast a site can drain. When I visited in November precipitation that month was 2.55 inches, which is 1.8 times the historical average, with no damage to the device or roadbed. The site returned to selected water levels in 24 hrs, while the local hydrograph remained elevated.* And yes, I know it’s a terrible slide—sorry. I’m a beaver dude, not a graphic designer…
Proven Effective
Non-lethal management strategies offer unbeatable success rates compared to trapping. Data below has been compiled over 20 years, and includes devices that are still functioning today.
This chart is from an earlier report done by the Humane Society of Connecticut in 2006, looking at non-lethal management success rates.
Low maintenance
Average of one hour per year
Devices are made of very robust materials, with no moving parts and a streamlined profile to ensure low maintenance requirements. Mike Callahan of Beaver Solutions, with 1500+ installs, averages 1 hour per device per year.
This photo is from the Cal Trans install, after 10 months and an El Niño winter. I did the maintenance in flip-flops and shorts, and it took me 5 minutes. The debris removed could easily have fit in a shoebox. Devices are easy to clean even with larger amounts of debris.
Save money and hassle year after year
This chart is from 14 sites in Virginia that installed devices to deal with ongoing beaver problems. Beaver damage repair costs dropped to zero, total costs dropped 85%, and cost efficiency increased from $0.39:1 to $8.37:1.
