- Lake TravisHighland Lakes · Texas
- Lake BuchananHighland Lakes · Texas
- Canyon LakeGuadalupe River · Texas
- Lake TexomaRed River · Texas / Oklahoma
- Lake LanierChattahoochee River · Georgia
- Allatoona LakeEtowah River · Georgia
- Hartwell LakeSavannah River · Georgia / South Carolina
- Lake MurraySaluda River · South Carolina
- Jordanelle ReservoirProvo River · Utah
1963–present
Reclamation's daily record for Glen Canyon Dam begins in December 1963, as the lake started to fill. The chart and the comparison below start once it first filled in June 1980, just as for the record low. Lake Powell has ranged over 191.72 vertical feet, from a record low of 3,516.62 ft (Sep 15, 2026) to a record high of 3,708.34 ft (Jul 14, 1983). Today's 3,517.60 ft is higher than only 1 of the 555 monthly averages since 1980.
| Year | Mean (ft) | Low (ft) | High (ft) |
|---|---|---|---|
| 1980 | 3,688.88 | 3,681.18 | 3,700.46 |
| 1981 | 3,676.03 | 3,667.47 | 3,681.38 |
| 1982 | 3,677.25 | 3,661.89 | 3,687.83 |
| 1983 | 3,693.18 | 3,682.01 | 3,708.34 |
| 1984 | 3,688.22 | 3,672.99 | 3,702.46 |
| 1985 | 3,687.11 | 3,674.82 | 3,700.12 |
| 1986 | 3,688.43 | 3,680.68 | 3,700.02 |
| 1987 | 3,687.49 | 3,677.47 | 3,698.47 |
| 1988 | 3,685.39 | 3,679.76 | 3,693.31 |
| 1989 | 3,671.60 | 3,658.46 | 3,679.73 |
| 1990 | 3,646.18 | 3,633.48 | 3,658.42 |
| 1991 | 3,630.31 | 3,624.55 | 3,639.02 |
| 1992 | 3,623.87 | 3,615.91 | 3,634.01 |
| 1993 | 3,644.59 | 3,612.46 | 3,668.70 |
| 1994 | 3,656.75 | 3,650.02 | 3,665.75 |
| 1995 | 3,668.97 | 3,644.59 | 3,693.75 |
| 1996 | 3,679.08 | 3,671.79 | 3,688.31 |
| 1997 | 3,680.47 | 3,663.08 | 3,695.09 |
| 1998 | 3,684.90 | 3,672.81 | 3,697.06 |
| 1999 | 3,685.42 | 3,677.20 | 3,694.73 |
| 2000 | 3,678.11 | 3,669.89 | 3,683.40 |
| 2001 | 3,665.32 | 3,656.17 | 3,673.02 |
| 2002 | 3,637.93 | 3,620.10 | 3,656.08 |
| 2003 | 3,607.92 | 3,597.22 | 3,619.94 |
| 2004 | 3,579.90 | 3,564.42 | 3,597.06 |
| 2005 | 3,585.70 | 3,555.10 | 3,608.38 |
| 2006 | 3,600.78 | 3,588.66 | 3,610.87 |
| 2007 | 3,602.36 | 3,594.64 | 3,611.68 |
| 2008 | 3,612.34 | 3,588.24 | 3,633.72 |
| 2009 | 3,626.47 | 3,609.70 | 3,642.30 |
| 2010 | 3,628.58 | 3,618.62 | 3,638.82 |
| 2011 | 3,635.77 | 3,609.70 | 3,660.90 |
| 2012 | 3,628.90 | 3,609.82 | 3,639.63 |
| 2013 | 3,595.87 | 3,584.43 | 3,609.62 |
| 2014 | 3,593.68 | 3,574.21 | 3,609.68 |
| 2015 | 3,601.41 | 3,589.82 | 3,614.32 |
| 2016 | 3,604.70 | 3,591.14 | 3,621.45 |
| 2017 | 3,616.80 | 3,593.85 | 3,635.80 |
| 2018 | 3,604.18 | 3,581.85 | 3,622.74 |
| 2019 | 3,596.79 | 3,568.51 | 3,621.68 |
| 2020 | 3,600.12 | 3,582.21 | 3,611.02 |
| 2021 | 3,557.66 | 3,537.33 | 3,582.06 |
| 2022 | 3,530.14 | 3,522.24 | 3,539.84 |
| 2023 | 3,554.64 | 3,519.92 | 3,584.68 |
| 2024 | 3,572.16 | 3,558.21 | 3,587.17 |
| 2025 | 3,555.02 | 3,540.31 | 3,571.83 |
| 2026 | 3,526.99 | 3,516.62 | 3,540.17 |
Monthly mean (line) with monthly min–max band. Dashed teal line = full pool (3,700.00 ft).
Record high
3,708.34 ft
Jul 14, 1983
Record low
3,516.62 ft
Sep 15, 2026
Full pool
3,700.00 ft
conservation pool
Daily values shown as monthly min, mean and max. Lake level and streamflow from USGS (Glen Canyon Dam project data courtesy of the Bureau of Reclamation); reference elevations, capacity, and records from Reclamation; ramp minimums from NPS Glen Canyon NRA. Historical daily values are agency-reviewed; recent values are provisional.