Latest Snow Survey Offers Hope

Frank Gehrke, left, weighs snow near Echo Summit, to measure water content. Photo: Molly Samuel
Frank Gehrke, left, weighs snow near Echo Summit, to measure water content. Photo: Molly Samuel

His clipboard doesn’t have quite same gravitas as a pair of stone tablets. Nonetheless, Frank Gehrke is sort of the Moses of California water. Once a month he comes down from the mountaintop with a pronouncement on the state of the snowpack in the Sierra Nevada. Today’s message: Whew.

The Department of Water Resources announced today that on average, the water content of California’s Sierra snowpack stands at 107% of “normal” for this date. The figure is derived from a combination of electronic sensors and manual surveys, including Gehrke’s, taken at various points along Highway 50. It’s the first time this season that the statewide average has clocked in above normal.

In the monthly DWR news release, Director Mark Cowin expressed some relief, while warning that the state is still struggling to overcome three abnormally dry winters prior to this one. DWR reports that Lake Oroville, the primary reservoir for the State Water Project, still stands at just 55% of it’s long-term average level for this date. Shasta Lake, however, the biggest reservoir on the federal Central Valley Project, is now above its normal level.

Cowin says the latest readings offer hope that water managers will be able to increase projected allocations to state water customers, currently set at 15% of requested amounts. DWR estimates that final allocations will be “in the range of 35-45%.” Over the past ten years, customers have averaged about two thirds of requested water. Farms often make up for shortfalls by pumping costlier groundwater.

Our interactive map shows the current status of California’s key reservoirs. We also have a short video that takes you into the field with Frank Gehrke, to see how he does his manual surveys.

Latest Snow Survey Offers Hope 3 March,2010Craig Miller

2 thoughts on “Latest Snow Survey Offers Hope”

  1. Good report except for the obscure Moses metaphor. I don’t think the metaphor helps at all (especially when there are so many religious zealots).

    By the way, I really do enjoy the California Report.

  2. Moses coming down from Mt. Sinai with the Ten Commandments is obscure? This is something every educated person should know about. You don’t even have to be a Jew or a Christian — much less a religious zealot — to know about this.

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Author

Craig Miller

Craig is KQED's science editor, specializing in weather, climate, water & energy issues, with a little seismology thrown in just to shake things up. Prior to his current position, he launched and led the station's award-winning multimedia project, Climate Watch. Craig is also an accomplished writer/producer of television documentaries, with a focus on natural resource issues.

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