Basins

Near normal

Sacramento basin

Reservoir storage across California

Data through Aug 12, 2026 · source last checked Aug 13, 2026 · page revised Aug 13, 2026

Cite
acre-feet
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About this data
Source
US Bureau of Reclamation RISE; California reservoirs via CA DWR CDEC
Series
Reservoir storage summed across the basin
Geography
Sacramento basin
Unit
acre-feet
Calculation
Daily reading
Last observation
Aug 12, 2026
Update frequency
Daily

Now 3.10M af, 5% below the 5-yr median.

Sacramento basin storage fell to 3.15M af, down 13.5% over the month. The basin runs 5% below its 5-year median and 4.9% below last year's level.

The numbers
PeriodCurrentPriorChange
Week over week3.10M af3.21M af-3.4%
Month over month3.10M af3.59M af-13.7%
Year over year3.10M af3.27M af-5.2%
vs 5-yr median3.10M af3.27M af-5.2%