This photo was taken on July 28th, 2006. It shows the river level of the North Creek after just 1/2 an hour of rain that fell north of the main canyon. Six more inches and the banks would have overflowed and flooded the fields to the left. Coal Pits was a total swamp. Now I know why they call it a wash and will choose my campsites a bit more carefully.
It would be a bummer to be halfway up some wall and have a river of this force coming down on you.