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The linked gauge for Anderson Ranch Reservoir reported 4151.15 ft at its latest stored observation on Oct 9, 2026, on a falling 30-day trend (-2.79 ft).
Local gage height: 4151.15 ft
-2.79 ft net change over past 30 days
Verified freshwater recreation waterbody
Brisk (50–60°F) · Cold shock risk · Wetsuit recommended
Nearby river temperature: 53.8°F at SF BOISE RIVER AT ANDERSON RANCH DAM ID (2.2 mi away) · Oct 9, 7:15 PM UTC
| Observation Date | Gage height (ft) | 24h Change | Approval Status |
|---|---|---|---|
| Fri, Oct 9, 2026 | 4151.18 | -0.04 ft | Provisional |
| Thu, Oct 8, 2026 | 4151.22 | -0.07 ft | Provisional |
| Wed, Oct 7, 2026 | 4151.29 | -0.07 ft | Provisional |
| Tue, Oct 6, 2026 | 4151.36 | -0.07 ft | Provisional |
| Mon, Oct 5, 2026 | 4151.43 | -0.07 ft | Provisional |
| Sun, Oct 4, 2026 | 4151.50 | -0.07 ft | Provisional |
| Sat, Oct 3, 2026 | 4151.57 | -0.08 ft | Provisional |
| Fri, Oct 2, 2026 | 4151.65 | -0.07 ft | Provisional |
| Thu, Oct 1, 2026 | 4151.72 | -0.07 ft | Provisional |
| Wed, Sep 30, 2026 | 4151.79 | -0.07 ft | Provisional |
| Tue, Sep 29, 2026 | 4151.86 | -0.07 ft | Provisional |
| Mon, Sep 28, 2026 | 4151.93 | -0.08 ft | Provisional |
| Sun, Sep 27, 2026 | 4152.01 | -0.07 ft | Provisional |
| Sat, Sep 26, 2026 | 4152.08 | — | 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.