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# Green-Colorado basin

Reservoir storage across Utah / Wyoming

_Data through Aug 25, 2026 · source last checked Aug 27, 2026 · page revised Aug 27, 2026_

> Now 2.89M af, 13% below the 5-yr median.

Green-Colorado basin storage fell to 2.89M af, down 0.9% on the week and 2.6% over the month. The basin sits 13% below the 5-year median.

## The numbers

| Period | Current | Prior | Change |
| --- | --- | --- | --- |
| Week over week | 2.89M af | 2.91M af | -0.9% |
| Month over month | 2.89M af | 2.96M af | -2.6% |
| Year over year | 2.89M af | 3.33M af | -13.4% |
| vs 5-yr median | 2.89M af | 3.33M af | -13.4% |

## 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 25, 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 25, 2026. https://the-waterline.com/basin/green-colorado
Canonical URL: https://the-waterline.com/basin/green-colorado