Allagash Wilderness Waterway Conditions 05/07/2018 08:09 PM EDT The big lakes of the Allagash Wilderness Waterway are still ice covered. Telos, Heron, Umsaskis and Long are free of ice. The water level in the river is extremely high. Travel on the river would be considered unsafe. The roads to Chamberlain Bridge are passable. The roads to Churchill Dam are very rough, with many wash-outs, but they are passable. The road on the east shore of Umsaskis Bridge is covered with water and is impassable