Imagine the many rocks that hit these trees and DIDN'T
wedge into the trunks.
I wonder what kind of local vegetation would survive
untoppled if these floods happened every
winter.
See that thin, friable layer of black topsoil up there?
I bet you'd think differently about topsoil if you'd
read Jared Diamond's new book COLLAPSE.
That missing soil and rock is presumably in the
reservoir now, but hey, if it weren't for
that dam, that wash would have plunged across
LA from Duarte downstream to Long Beach.
