There is a large human-made dirt structure along Heath creek. It's purpose is to control the flooding of Heath Creek which mainly comes in the form of mud flows.
I have watched bulldozers build and maintain this structure. They do major work every couple years as necessary. It is definitely not a natural formation. There is much evidence of former mud flows that used to come through areas which have houses now between Elm and LPC. This structure was built after major flooding of Heath Creek buried some houses along a stretch of Lone Pine Canyon. LPC used go straight through. Carol has as home movie of some of this flooding near Thrush. This area that controls the flooding now directs the mud flows out to the desert. If you look at a satellite photo you can see the darker alluvial fan of of the mud from the Heath Creek wash way out into the desert by Phelan. In fact you can see the Wrightwood Blue Ridge mud in places on Phelan road.
Most years Heath Creek is a smallish creek (this year it is almost non-existant), but it can turn into a raging torrent. Did you see it when we had 7 inches of rain all at once a couple of Octobers ago? That was really something!
So I would definitely call a human-made structure that is built to control major flooding a ...... levee!
