Chronic flooding in the central Passaic basin, particularly around the confluence of the Passaic and Pompton rivers, has been severe enough to lead to government buyouts of private land. This section of the basin, upstream of the chokepoint created by the Little Falls and the Great Falls, occasionally fills with so much water that some of the Totowa Stage of Glacial Lake Passaic briefly reappears until enough time has gone by for the water to drain out. The Passaic River Flood Tunnel, a floodwater diversion system, has been proposed to create a new escape route for water trapped behind the Watchung Mountains.