Previous conversation on this topic [1] yielded about the same results that we've had in the past 30 minutes here. Doesn't seem like anything's going to change; we'll all just continue posting about it to our favorite blogs and meta-blogs, and (almond|alfalfa|whatever) farmers will continue to eat subsidies and turn them into drought.
At least people are starting to discuss this, which is an important improvement over the past situation. These are the first articles I've seen coming across my news feeds which are daring to bruise the sacred cow of California agriculture -- and I've bumped into a couple of people now who unprompted mentioned the 80% statistic for statewide agricultural water use. So word's getting around.
[1] https://news.ycombinator.com/item?id=9175649