Thank you,
I'm sure there must be thousand springs all over California waiting to be explored.
I've been a caver before being a cavediver, and during many yeras our explorations ended on a spring, subterranean river, source, lake... Now we are coming back to keep with the explorations. Many often some othre caving groups which are not into cavediving inform us about flooded caves. Just contact caving groups in California and they can show you many places.
Javier