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The linked gauge for Lake Hartwell reported 648.98 ft at its latest stored observation on Oct 9, 2026, on a falling 30-day trend (-1.12 ft).
Wind Advisory issued October 9 at 5:19PM EDT until October 11 at 8:00AM EDT by NWS Greenville-Spartanburg SC
Local gage height: 648.98 ft
-1.12 ft net change over past 30 days
Verified freshwater recreation waterbody
Comfortable (70–80°F) · Ideal swimming temperature
RUSSELL LAKE ABOVE CALHOUN FALLS, SC · Oct 9, 5:00 AM UTC
| Observation Date | Gage height (ft) | 24h Change | Approval Status |
|---|---|---|---|
| Thu, Oct 8, 2026 | 473.00 | +0.12 ft | Provisional |
| Mon, Oct 5, 2026 | 472.88 | +0.08 ft | Provisional |
| Sun, Oct 4, 2026 | 472.80 | +0.02 ft | Provisional |
| Sat, Oct 3, 2026 | 472.78 | +0.01 ft | Provisional |
| Fri, Oct 2, 2026 | 472.77 | +0.01 ft | Provisional |
| Thu, Oct 1, 2026 | 472.76 | 0.00 ft | Provisional |
| Wed, Sep 30, 2026 | 472.76 | -0.03 ft | Provisional |
| Tue, Sep 29, 2026 | 472.79 | 0.00 ft | Provisional |
| Mon, Sep 28, 2026 | 472.79 | 0.00 ft | Provisional |
| Sun, Sep 27, 2026 | 472.79 | -0.01 ft | Provisional |
| Sat, Sep 26, 2026 | 472.80 | -0.03 ft | Provisional |
| Fri, Sep 25, 2026 | 472.83 | -0.03 ft | Provisional |
| Thu, Sep 24, 2026 | 472.86 | -0.30 ft | Provisional |
| Wed, Sep 23, 2026 | 473.16 | — | Provisional |
Current index calculated from verified local atmospheric, hydrographic & alert inputs.
Poor for swimming (44/100), from 5 available inputs. Supporting this: Measured water temperature 77°F. Provisional data. 3% chance of precipitation. Working against it: Active moderate alert: Wind Advisory. The forecast mentions thunderstorms, which carries a risk penalty. Confidence is moderate (77%) because some inputs are unavailable or older than ideal.