Glad to see that California is making its data more accessible. Keep track of precip (chart below), snowpack (looking good) and reservoirs (still way low) as the rainy season progresses.
Oh, and don't forget that dry year(s) will come back (El Niño is visiting, not moving in), so it's still important to raise water tariffs (to clean water, reduce leaks, etc.), monitor and limit groundwater use, restore the environment and so on.
Bottom Line: Data are necessary for knowing your situation and making good decisions, but they are not sufficient. Water managers in California (and many other places in the world) need more data to make better decisions, but they also need to avoid making bad decisions in the absence of data!
Here's a fresh paper on California water managers' attitudes towards (open) data!