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The linked gauge for Hebgen Lake reported 6530.03 ft at its latest stored observation on Oct 9, 2026, on a falling 30-day trend (-0.66 ft).
Red Flag Warning issued October 9 at 10:40AM MDT until October 9 at 9:00PM MDT by NWS Billings MT
Local gage height: 6530.03 ft
-0.66 ft net change over past 30 days
Verified freshwater recreation waterbody
Brisk (50–60°F) · Cold shock risk · Wetsuit recommended
Nearby river temperature: 57.0°F at Madison River bl Hebgen Lake nr Grayling MT (0.7 mi away) · Oct 9, 4:45 PM UTC
| Observation Date | Gage height (ft) | 24h Change | Approval Status |
|---|---|---|---|
| Thu, Oct 8, 2026 | 6530.12 | -0.10 ft | Provisional |
| Mon, Oct 5, 2026 | 6530.22 | -0.06 ft | Provisional |
| Sun, Oct 4, 2026 | 6530.28 | -0.04 ft | Provisional |
| Sat, Oct 3, 2026 | 6530.32 | -0.01 ft | Provisional |
| Fri, Oct 2, 2026 | 6530.33 | -0.01 ft | Provisional |
| Thu, Oct 1, 2026 | 6530.34 | -0.03 ft | Provisional |
| Wed, Sep 30, 2026 | 6530.37 | -0.02 ft | Provisional |
| Tue, Sep 29, 2026 | 6530.39 | +0.04 ft | Provisional |
| Sun, Sep 27, 2026 | 6530.35 | -0.07 ft | Provisional |
| Sat, Sep 26, 2026 | 6530.42 | -0.02 ft | Provisional |
| Fri, Sep 25, 2026 | 6530.44 | 0.00 ft | Provisional |
| Thu, Sep 24, 2026 | 6530.44 | -0.04 ft | Provisional |
| Wed, Sep 23, 2026 | 6530.48 | -0.01 ft | Provisional |
| Tue, Sep 22, 2026 | 6530.49 | — | Provisional |
Direct in-situ sensor data is required to compute numeric suitability.
Water temperature is not available from a verified source for this lake. No swimming score is shown without it.