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Hydrologic Conditions: Elsewhere in the Southwest, October 2015

Lake Oroville: Lake Oroville, the primary storage reservoir for the California State Water Project, remained constant ending the water year with 30% of its total capacity or 48% of the historical average for the date. Storage levels are on par with what they were at the same time last year and are still above the historical low from the driest year on record (1976-1977). (See chart below)

Click to enlarge

Click to enlarge

Forecasters are predicting that El Nino is almost certain this winter, assigning high probabilities to the likelihood of wet conditions in Southern California, and expecting that wet conditions are more likely than dry conditions in Northern California. But snowpack levels and the impact of El Nino conditions on storage levels—the primary factors affecting DWR’s SWP allocation—remain in question.

 

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