Charles Mill Lake water level history
Daily records since 2020 · Level today: 997.17 ft
Highest on record
1,009.65 ft
Apr 6, 2026
Lowest on record
992.17 ft
Dec 23, 2021
Today
997.17 ft
Oct 21, 2026
Years of data
6
since 2020
In short
Across 5 complete years, 2025 had the lowest average level (996.56 ft) and 2021 the highest (997.09 ft).
On average the lake is lowest in December (994.66 ft) and highest in April (999.44 ft).
Charles Mill Lake 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.
- 2021
- 2022
- 2025
- 2023
- 2024
Yearly highs and lows
| Year | Average | Low | Low date | High | High date |
|---|---|---|---|---|---|
| 2026 (292 days) | 997.19 | 992.45 | Jan 20 | 1,009.65 | Apr 6 |
| 2025 | 996.56 | 992.45 | Dec 18 | 1,004.61 | Apr 8 |
| 2024 | 996.79 | 992.46 | Feb 18 | 1,005.83 | Apr 6 |
| 2023 | 996.92 | 992.45 | Dec 22 | 1,004.16 | Aug 28 |
| 2022 | 997.00 | 992.18 | Jan 13 | 1,003.75 | Feb 25 |
| 2021 | 997.09 | 992.17 | Dec 23 | 1,005.05 | May 13 |
| 2020 (138 days) | 997.52 | 996.51 | Dec 21 | 999.40 | Nov 2 |
Levels in feet. Partial years show the number of days with data.
Monthly averages
| Month | Average | Lowest | Highest |
|---|---|---|---|
| January | 994.71 | 992.18 | 999.25 |
| February | 994.73 | 992.25 | 1,003.75 |
| March | 996.99 | 993.46 | 1,001.62 |
| April | 999.44 | 996.93 | 1,009.65 |
| May | 998.38 | 997.18 | 1,005.05 |
| June | 997.75 | 996.99 | 1,000.52 |
| July | 997.72 | 997.14 | 1,001.91 |
| August | 997.66 | 996.97 | 1,004.16 |
| September | 997.36 | 996.97 | 1,000.56 |
| October | 997.30 | 996.90 | 999.13 |
| November | 996.41 | 992.78 | 999.40 |
| December | 994.66 | 992.17 | 998.11 |
Download
Daily levels as CSV (2,256 rows; credit the original agencies listed below)