- Debris Flow
(1) Debris flows occur on fairly steep slopes as rapid, downward mass movements of particles coarser than sand, and up to the size of boulders a meter or more in diameter, at a rate from two to 40 kilometers per hour. Also, the material that descends in a debris flow.
(2) A rapidly moving mass of soil, mud, and rock fragments. Typically more than half the material is coarser than sand size.
(3) A debris flow (or debris torrent in this case) is the rapid movement of large quantities of things like wood and sediment down a stream channel during a storm or flood. Generally, this happens only in smaller streams and results in the scouring out of the stream bed.
(1) A debris flow is like an avalanche made of dirt.
(2) The flood was bad enough, but the debris torrent really took the cake. And the tent, and all the packs. And the stove. And Ed.
(3) "Debris flow!", yelled Sue, as she accidentally dumped a bowl of oatmeal into own her lap. But it wasn't. It was oatmeal.