Beavers cause sinkhole at state park

July 6, 2010

By Staff

Small sinkholes opened at Lake Sammamish State Park last week, after beavers burrowed beneath a park road.

Rangers cordoned off the area, and placed plywood sheets atop the holes to prevent parkgoers from crashing through.

Beavers built dams on a nearby creek, raising the prospect of flooding upstream during heavy rainfall. The state could hire a trapper to remove the animals if the problem persists.

Sammamish faced a similar problem last month. The city hired a trapper to remove beavers from Laughing Jacobs Creek after the animals constructed a dam on the waterway. The blockage caused the water level in Beaver Lake to rise — and submerged some docks — during rainy weather last month.

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