Lake Hartwell Water Level History
Thirty-day lake-level chart, recent highs and lows, net change and daily summaries from the matched USGS station.
Lake Hartwell water-level chart
Source: U.S. Geological Survey monitoring station ↗. Recent measurements may be provisional.
What has Lake Hartwell been doing?
Across the available 30-day series, Lake Hartwell is falling overall. The measured range runs from 648.93 ft to 650.48 ft, with a net change of -1.44 ft.
Lake levels can respond to rainfall, watershed inflow, dam and hydropower operations, seasonal target elevations, evaporation and downstream release requirements. This page reports what the matched sensor measured; it does not infer why an operator changed a reservoir.
Recent daily levels
| Date | Low | Average | High |
|---|---|---|---|
| Oct 7 | 648.93 ft | 648.99 ft | 649.02 ft |
| Oct 6 | 649.00 ft | 649.08 ft | 649.15 ft |
| Oct 5 | 649.12 ft | 649.23 ft | 649.34 ft |
| Oct 4 | 649.09 ft | 649.23 ft | 649.33 ft |
| Oct 3 | 649.11 ft | 649.18 ft | 649.24 ft |
| Oct 2 | 648.98 ft | 649.07 ft | 649.15 ft |
| Oct 1 | 649.03 ft | 649.10 ft | 649.14 ft |
| Sep 30 | 649.10 ft | 649.14 ft | 649.18 ft |
| Sep 29 | 649.12 ft | 649.18 ft | 649.21 ft |
| Sep 28 | 649.17 ft | 649.23 ft | 649.27 ft |
| Sep 27 | 649.21 ft | 649.25 ft | 649.27 ft |
| Sep 26 | 649.20 ft | 649.24 ft | 649.27 ft |
| Sep 25 | 649.20 ft | 649.23 ft | 649.26 ft |
| Sep 24 | 649.18 ft | 649.21 ft | 649.24 ft |
| Sep 23 | 649.16 ft | 649.23 ft | 649.28 ft |
| Sep 22 | 649.20 ft | 649.34 ft | 649.43 ft |
| Sep 21 | 649.24 ft | 649.39 ft | 649.45 ft |
| Sep 20 | 649.39 ft | 649.50 ft | 649.58 ft |
| Sep 19 | 649.53 ft | 649.64 ft | 649.71 ft |
| Sep 18 | 649.61 ft | 649.71 ft | 649.76 ft |
| Sep 17 | 649.72 ft | 649.77 ft | 649.81 ft |
| Sep 16 | 649.77 ft | 649.87 ft | 649.93 ft |
| Sep 15 | 649.89 ft | 649.99 ft | 650.05 ft |
| Sep 14 | 650.01 ft | 650.13 ft | 650.19 ft |
| Sep 13 | 650.13 ft | 650.17 ft | 650.20 ft |
| Sep 12 | 650.00 ft | 650.08 ft | 650.19 ft |
| Sep 11 | 649.99 ft | 650.17 ft | 650.25 ft |
| Sep 10 | 650.14 ft | 650.25 ft | 650.32 ft |
| Sep 9 | 650.28 ft | 650.39 ft | 650.46 ft |
| Sep 8 | 650.40 ft | 650.45 ft | 650.48 ft |
Lake Hartwell level-history FAQ
How has Lake Hartwell water level changed over the last 30 days?
Across the available 30-day sensor series, the net change is -1.44 ft and the overall direction is falling.
What was the highest Lake Hartwell level in the last 30 days?
The highest reading in the available 30-day series is 650.48 ft.
What was the lowest Lake Hartwell level in the last 30 days?
The lowest reading in the available 30-day series is 648.93 ft.
Are historical USGS lake readings final?
Not always. Recent readings may be marked provisional and can be revised by the source agency after quality review.