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# Sacramento basin

Reservoir storage across California

_Data through Aug 26, 2026 · source last checked Aug 27, 2026 · page revised Aug 27, 2026_

> Now 2.92M af, 7% below the 5-yr median.

Sacramento basin storage stands at 2.92M af, down 3.3% on the week. The basin runs 7% below the 5-year median. Storage dropped 13.1% month over month. Year over year, it is down 6.9%.

## The numbers

| Period | Current | Prior | Change |
| --- | --- | --- | --- |
| Week over week | 2.92M af | 3.02M af | -3.3% |
| Month over month | 2.92M af | 3.36M af | -13.1% |
| Year over year | 2.92M af | 3.14M af | -6.9% |
| vs 5-yr median | 2.92M af | 3.14M af | -6.9% |

## 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 26, 2026
- Update frequency: Daily

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Cite: Sacramento basin storage is 7% below its 5-yr median. The Waterline, data through Aug 26, 2026. https://the-waterline.com/basin/sacramento
Canonical URL: https://the-waterline.com/basin/sacramento