April 1 is a telling date in California water policy each year. All the measurements — snowpack, water in reservoirs — are compared to that date. And this April 1, there was something very interesting to note. We all know it’s been a wet winter, but on April 1, most of California’s reservoirs were not full. We know there are some other issues in play with Lake Oroville — just 76 percent full at the end of the day April 1 — but most of the other lakes were down too. Shasta was 89 percent full, Trinity 90 percent, Folsom just 60 percent.