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# Sacramento basin

Reservoir storage across California

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

> 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

| Period | Current | Prior | Change |
| --- | --- | --- | --- |
| Week over week | 3.10M af | 3.21M af | -3.4% |
| Month over month | 3.10M af | 3.59M af | -13.7% |
| Year over year | 3.10M af | 3.27M af | -5.2% |
| vs 5-yr median | 3.10M af | 3.27M af | -5.2% |

## 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 period: Daily reading
- Last observation: Aug 12, 2026
- Update frequency: Daily

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Cite: Sacramento basin storage is 5% below its 5-yr median. The Waterline, data through Aug 12, 2026. https://the-waterline.com/basin/sacramento
Canonical URL: https://the-waterline.com/basin/sacramento