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The linked gauge for Lake Michigan - Indiana Shoreline reported 579.10 ft (relative to IGLD 1985) at its latest stored observation on Oct 11, 2026, on a falling 30-day trend (-0.37 ft).
Local gage height: 579.10 ft
-0.37 ft net change over past 30 days
Deepest basin sounding across ~14,338,560 acres
Refreshing (60–70°F) · Cool swim · Moderate comfort
NOAA GLERL GLSEA surface temperature at 41.720, -86.954 · Oct 10, 12:00 PM UTC
Nearby river temperature: 58.6°F at TRAIL CREEK AT MICHIGAN CITY, IN (6.4 mi away) · Oct 11, 11:30 AM UTC
| Observation Date | Gage height (ft) | 24h Change | Approval Status |
|---|---|---|---|
| Fri, Oct 9, 2026 | 579.01 | -0.04 ft | Provisional |
| Thu, Oct 8, 2026 | 579.05 | +0.05 ft | Provisional |
| Wed, Oct 7, 2026 | 579.00 | -0.03 ft | Provisional |
| Tue, Oct 6, 2026 | 579.02 | -0.14 ft | Provisional |
| Mon, Oct 5, 2026 | 579.16 | -0.04 ft | Provisional |
| Sun, Oct 4, 2026 | 579.21 | -0.12 ft | Provisional |
| Sat, Oct 3, 2026 | 579.33 | -0.18 ft | Provisional |
| Fri, Oct 2, 2026 | 579.50 | +0.24 ft | Provisional |
| Thu, Oct 1, 2026 | 579.27 | +0.09 ft | Provisional |
| Wed, Sep 30, 2026 | 579.17 | -0.18 ft | Provisional |
| Tue, Sep 29, 2026 | 579.35 | -0.07 ft | Provisional |
| Mon, Sep 28, 2026 | 579.42 | -0.04 ft | Provisional |
| Sun, Sep 27, 2026 | 579.46 | -0.03 ft | Provisional |
| Sat, Sep 26, 2026 | 579.49 | — | Provisional |
Current index calculated from verified local atmospheric, hydrographic & alert inputs.
Poor for swimming (51/100), from 5 available inputs. Supporting this: No active official alerts for this lake. 1% chance of precipitation. Working against it: Measured water temperature 59°F from a representative gauge 6.4 mi away. Provisional data. Cold water hazard: thermal protection recommended below 60°F. Water temperature is 59°F (below 60°F). Immersion requires thermal protection. Confidence is moderate (75%) because some inputs are unavailable or older than ideal.