Hartwell Lake water level history
Daily records since 2016 · Level today: 648.66 ft
Highest on record
664.21 ft
Jun 3, 2018
Lowest on record
648.68 ft
Oct 21, 2026
Today
648.66 ft
Oct 21, 2026
Years of data
10
since 2016
In short
Across 8 complete years, 2017 had the lowest average level (651.93 ft) and 2020 the highest (660.47 ft).
On average the lake is lowest in December (654.86 ft) and highest in May (659.13 ft).
Hartwell 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.
- 2017
- 2018
- 2023
- 2024
- 2025
Yearly highs and lows
| Year | Average | Low | Low date | High | High date |
|---|---|---|---|---|---|
| 2026 (294 days) | 652.33 | 648.68 | Oct 21 | 653.73 | Jan 18 |
| 2025 | 657.86 | 653.20 | Dec 24 | 660.48 | Apr 28 |
| 2024 | 658.06 | 653.13 | Jan 5 | 662.30 | Mar 10 |
| 2023 | 657.49 | 651.94 | Dec 9 | 661.94 | May 1 |
| 2022 | 658.16 | 653.77 | Nov 23 | 661.82 | Jun 1 |
| 2021 | 659.86 | 656.43 | Dec 24 | 662.43 | Oct 17 |
| 2020 | 660.47 | 657.02 | Nov 29 | 663.52 | May 21 |
| 2019 (191 days) | 658.52 | 654.91 | Dec 13 | 662.66 | Feb 25 |
| 2018 | 658.88 | 650.02 | Jan 8 | 664.21 | Jun 3 |
| 2017 | 651.93 | 648.88 | Jan 1 | 654.06 | Jun 5 |
| 2016 (210 days) | 654.50 | 648.96 | Dec 31 | 660.37 | May 26 |
Levels in feet. Partial years show the number of days with data.
Monthly averages
| Month | Average | Lowest | Highest |
|---|---|---|---|
| January | 656.07 | 648.88 | 661.44 |
| February | 657.28 | 649.96 | 663.49 |
| March | 658.61 | 649.83 | 662.40 |
| April | 658.76 | 650.00 | 662.57 |
| May | 659.13 | 652.29 | 663.52 |
| June | 659.02 | 653.37 | 664.21 |
| July | 657.87 | 652.00 | 660.99 |
| August | 657.06 | 650.77 | 661.80 |
| September | 656.35 | 649.14 | 661.34 |
| October | 656.18 | 648.68 | 662.43 |
| November | 655.54 | 649.94 | 661.67 |
| December | 654.86 | 648.96 | 661.67 |
Download
Daily levels as CSV (3,563 rows; credit the original agencies listed below)