Glendo Reservoir water level history
Daily records since 2005 · Level today: 4,596.97 ft
Highest on record
4,648.82 ft
Jun 29, 2010
Lowest on record
0.00 ft
Dec 31, 2005
Today
4,596.97 ft
Oct 21, 2026
Years of data
21
since 2005
In short
Across 17 complete years, 2024 had the lowest average level (4,610.10 ft) and 2011 the highest (4,623.57 ft).
On average the lake is lowest in September (4,591.44 ft) and highest in June (4,632.67 ft).
Glendo Reservoir level, all years
Loading chart…
Measured
Normal range for the date (middle 50% of past years)
Full pool
Lowest years
Years ranked by their lowest daily level.
- 2017
- 2014
- 2009
- 2012
- 2024
Yearly highs and lows
| Year | Average | Low | Low date | High | High date |
|---|---|---|---|---|---|
| 2026 (292 days) | 4,610.74 | 4,587.78 | Aug 21 | 4,626.64 | Jun 9 |
| 2025 | 4,610.18 | 4,583.18 | Sep 14 | 4,634.08 | Jun 21 |
| 2024 | 4,610.10 | 4,582.12 | Sep 26 | 4,628.58 | May 10 |
| 2023 | 4,613.85 | 4,588.05 | Sep 15 | 4,635.80 | Jun 25 |
| 2022 | 4,611.73 | 4,584.28 | Sep 8 | 4,631.23 | May 14 |
| 2021 | 4,614.98 | 4,587.19 | Sep 7 | 4,634.45 | May 11 |
| 2020 | 4,616.23 | 4,588.05 | Sep 10 | 4,629.95 | Jun 14 |
| 2019 | 4,618.83 | 4,597.51 | Sep 30 | 4,637.34 | Jun 4 |
| 2018 | 4,614.08 | 4,592.25 | Sep 7 | 4,632.36 | Jun 9 |
| 2017 | 4,614.32 | 4,579.48 | Sep 17 | 4,634.63 | May 30 |
| 2016 | 4,618.26 | 4,593.23 | Sep 21 | 4,643.88 | Jun 22 |
| 2015 | 4,613.41 | 4,589.24 | Sep 21 | 4,639.90 | Jun 5 |
| 2014 | 4,612.65 | 4,580.26 | Sep 28 | 4,635.66 | May 26 |
| 2013 | 4,611.66 | 4,588.04 | Sep 15 | 4,631.31 | Jun 9 |
| 2012 | 4,612.63 | 4,581.91 | Sep 7 | 4,633.18 | Apr 9 |
| 2011 | 4,623.57 | 4,602.10 | Sep 28 | 4,639.93 | Jul 5 |
| 2010 | 4,622.21 | 4,602.57 | Sep 20 | 4,648.82 | Jun 29 |
| 2009 | 4,611.38 | 4,580.99 | Sep 16 | 4,637.09 | Jun 26 |
| 2008 (162 days) | 4,594.85 | 4,577.66 | Sep 8 | 4,622.32 | Jul 23 |
| 2005 (1 days) | 0.00 | 0.00 | Dec 31 | 0.00 | Dec 31 |
Levels in feet. Partial years show the number of days with data.
Monthly averages
| Month | Average | Lowest | Highest |
|---|---|---|---|
| January | 4,612.06 | 4,601.12 | 4,624.38 |
| February | 4,616.58 | 4,606.72 | 4,627.67 |
| March | 4,621.03 | 4,611.05 | 4,630.99 |
| April | 4,626.55 | 4,617.50 | 4,634.73 |
| May | 4,630.31 | 4,622.46 | 4,640.12 |
| June | 4,632.67 | 4,621.55 | 4,648.82 |
| July | 4,626.66 | 4,601.01 | 4,648.73 |
| August | 4,608.85 | 4,585.75 | 4,638.58 |
| September | 4,591.44 | 4,577.66 | 4,623.97 |
| October | 4,595.33 | 4,580.87 | 4,610.92 |
| November | 4,601.98 | 4,589.14 | 4,615.40 |
| December | 4,598.98 | 0.00 | 4,620.18 |
Download
Daily levels as CSV (6,657 rows; credit the original agencies listed below)