We have posts about a whole bunch of less important stuff, I think a drought which is definitely a sub-category of risk is definitely well within boundaries.
The California water shortage is not a "sub-category of risk", it's a sub-category of the use of political power to benefit particular groups.
I think we need a discussion thread for the californian drought going on. I would like to compile information in the main post and would like help compiling it. If we really are proud to be effective altruists then this is an area we should really figure out.
Any one have any good ideas on how we can help?