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The linked gauge for Gunflint Lake reported 602.01 ft (relative to IGLD 1985) at its latest stored observation on Oct 10, 2026, on a falling 30-day trend (-0.30 ft).
Local gage height: 602.01 ft
-0.30 ft net change over past 30 days
Verified freshwater recreation waterbody
Brisk (50–60°F) · Cold shock risk · Wetsuit recommended
Grand Marais, Lake Superior, MN · Oct 10, 4:00 PM UTC
| Observation Date | Gage height (ft) | 24h Change | Approval Status |
|---|---|---|---|
| Fri, Oct 9, 2026 | 601.81 | +0.04 ft | Provisional |
| Thu, Oct 8, 2026 | 601.77 | -0.05 ft | Provisional |
| Wed, Oct 7, 2026 | 601.82 | -0.13 ft | Provisional |
| Tue, Oct 6, 2026 | 601.95 | +0.12 ft | Provisional |
| Mon, Oct 5, 2026 | 601.83 | -0.01 ft | Provisional |
| Sun, Oct 4, 2026 | 601.85 | -0.11 ft | Provisional |
| Sat, Oct 3, 2026 | 601.96 | +0.10 ft | Provisional |
| Fri, Oct 2, 2026 | 601.86 | -0.07 ft | Provisional |
| Thu, Oct 1, 2026 | 601.93 | -0.08 ft | Provisional |
| Wed, Sep 30, 2026 | 602.00 | -0.03 ft | Provisional |
| Tue, Sep 29, 2026 | 602.04 | +0.06 ft | Provisional |
| Mon, Sep 28, 2026 | 601.97 | -0.04 ft | Provisional |
| Sun, Sep 27, 2026 | 602.01 | 0.00 ft | Provisional |
| Sat, Sep 26, 2026 | 602.01 | — | Provisional |
Current index calculated from verified local atmospheric, hydrographic & alert inputs.
Very Poor / Avoid for swimming (28/100), from 5 available inputs. Supporting this: No active official alerts for this lake. 1% chance of precipitation. Working against it: Measured water temperature 53°F from a representative gauge 28.6 mi away. Provisional data. Immersion shock hazard: water below 55°F poses severe cold shock and rapid hypothermia risk. Water temperature is 53°F (below 55°F). Severe cold shock and hypothermia hazard upon immersion. Confidence is moderate (75%) because some inputs are unavailable or older than ideal.