Some movement on the river!!!

The little wooden quadpod (tripod has three legs, right? so...) When the river breaks, the quadpod moves and yanks the rope out of a trigger rig and stops a clock and sounds a siren. This alerts the village to get ready because break up is a potential flood event. If the river breaks in the middle of the night the siren wakes up the EMO guy who then starts the flood watch.They were using canoes on the runway at the airstrip in town 2 years ago. The ice has started moving at the Liard river ferry crossing it broke there at 9:00pm, but the ice on the mackenzie river by town hasn't moved yet, it may just go in the middle of the night. We are about 7 miles from the Liard ferry crossing as the crow flies.