Lake Powell Water Level
The second-largest reservoir in the US, behind Glen Canyon Dam. Lake Powell stores Upper Basin water and regulates releases to Lake Mead and the Lower Basin.
USBR daily reading for Oct 14, 2026
- PERCENT FULL
- 22.4%
- 7-DAY CHANGE
- +0.1 pts
- ELEVATION
- 3,519.3 ft
- water surface, above sea level
- ACRE-FEET
- 5.22M
- of 23.31M capacity
- GALLONS
- 1701.95B
- of 7596.90B
Water balance, 7 days to Oct 14, 2026
- Inflow (estimated)
- 106,304 af
- Release plus change in storage. Ignores evaporation, so it is a floor
- Release
- 91,313 af
- Water passed downstream through the dam
- Change in storage
- +14,991 af
- From the daily storage readings; the difference from inflow minus release is evaporation, diversions and rounding
Trend
- 7 days
- +0.1 pts
- vs. the reading a week earlier
- 1 year
- −6.5 pts
- vs. end of Sep 2025 (28.9%)
- 10-year low
- 22.1%
- end of Aug 2026
- 10-year high
- 66.1%
- end of Jun 2017
Yearly figures and the high/low compare end-of-month storage from Reclamation's monthly series with the latest daily reading. This site does not project future levels; for official 24-month projections see Reclamation's 24-Month Study. How each figure is derived is explained in the FAQ.
10-Year Historical Trend
End-of-month storage as a percent of capacity. Source: U.S. Bureau of Reclamation. Dashed lines are this site's warning (40%) and critical (25%) marks.
About Lake Powell
Lake Powell is on the Colorado River in UT/AZ. Reclamation's capacity figure for it is 23,314,000 acre-feet (live capacity, 2017 survey), about 7596.90B gallons.
The second-largest reservoir in the US, behind Glen Canyon Dam. Lake Powell stores Upper Basin water and regulates releases to Lake Mead and the Lower Basin.
As of Oct 14, 2026, the reservoir held 5,223,099 acre-feet, 22.4% of capacity, up 0.1 pts from the reading seven days earlier, with the water surface at 3,519.3 feet above sea level. Storage figures are U.S. Bureau of Reclamation daily readings; recent values are provisional and may be revised.
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