In southern California, in a large area 60 to 70 miles east of Los Angeles, and just south of the San Bernardino mountain range, there are numerous places with clear evidence of the effects of atmospheric rivers dumping tons of water on California, long ago and long before the human “industrial age”, with thousands of acres covered in “river rock” strewn landscapes.
We used to walk through those landscapes when I grew up there. Some places were so covered in river rock you walked only on rocks, no soil, unless you lifted the rocks up and removed them. You can’t see most of them now. They’ve been paved over and re-landscaped for the mass of housing and retail developments built since the early 1960s.
It was clear that whole rivers of water once ran openly from the San Bernardino Mountains down to the Santa Anna River (which today is but a trickle of stream). Maybe the Santa Anna will be true river again and maybe in our lifetimes.
YUP; kind of makes a NORMAL PERSON just wonder how the LA Basin could be buried in 1500 FEET of alluvial fill if there were never any flood conditions before SUV’s.