While we are on the topic of water (see last post), we have some updates on the drinking water situation. The Chronicle is reporting
Statewide snow pack measured 53% of average for the critical April 1 survey — the time when snow levels are typically at their peak, helping inform how much melt-off will pour into California’s many reservoirs. The figure is the 11th lowest in 71 years of record-keeping. The problems, though, are somewhat muted by last winter’s big snowfall. The 40% of the state that is flirting with drought is a fraction of what it would be if there had been back-to-back dry years.
“For a dry year like this one, it’s nice that the preceding year was a wet one,” said Mike Anderson, state climatologist with the California Department of Water Resources, which conducts the snow surveys. Snow typically provides nearly a third of the state’s water. San Francisco’s Hetch Hetchy was at about 68% of capacity last week, slightly more than average for the time.
The question on Anderson’s mind, and the minds of other weather watchers in California, is whether this winter was a one-off or if it is the beginning of a multiyear drought, along the lines of what the state experienced between 2012 and 2017.
The city of B'game is in the midst of updating our Urban Water Management Plan, an every five year exercise, that will for the first time estimate the impact of a five-year drought. Prior plans were only required to account for a three-year drought. I'll be watching for the update especially regarding total consumption vis a vis all of the building that was going on before the pandemic.
I'm still enamored with Ben Franklin's writings--one of which says "When the well's dry we know the worth of water."
Update: Here is the chart tracking just how dry this season has been and indicating how bad the fire season might be. Only 1976-77 was drier year to date.
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