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# Green-Colorado basin

Reservoir storage across Utah / Wyoming

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

> Now 2.93M af, 13% below the 5-yr median.

Green-Colorado basin storage stands at 2.93M af, 13% below the 5-year median. The basin dropped 0.6% on the week and has fallen 13.2% year over year.

## The numbers

| Period | Current | Prior | Change |
| --- | --- | --- | --- |
| Week over week | 2.93M af | 2.95M af | -0.6% |
| Month over month | 2.93M af | 2.98M af | -1.9% |
| Year over year | 2.93M af | 3.37M af | -13.1% |
| vs 5-yr median | 2.93M af | 3.37M af | -13.1% |

## About this data

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

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Cite: Green-Colorado basin storage is 13% below its 5-yr median. The Waterline, data through Aug 12, 2026. https://the-waterline.com/basin/green-colorado
Canonical URL: https://the-waterline.com/basin/green-colorado