Loading page content…
Loading page content…
Loading lake conditions…
The linked gauge for Upper Mystic Lake reported 16.15 ft at its latest stored observation on Oct 9, 2026, on a steady 30-day trend (-0.02 ft).
Local gage height: 16.15 ft
-0.02 ft net change over past 30 days
Verified freshwater recreation waterbody
Refreshing (60–70°F) · Cool swim · Moderate comfort
FRESH POND IN GATE HOUSE AT CAMBRIDGE, MA · Oct 9, 4:45 AM UTC
| Observation Date | Gage height (ft) | 24h Change | Approval Status |
|---|---|---|---|
| Fri, Oct 9, 2026 | 16.14 | -0.03 ft | Provisional |
| Thu, Oct 8, 2026 | 16.17 | -0.01 ft | Provisional |
| Wed, Oct 7, 2026 | 16.18 | +0.02 ft | Provisional |
| Tue, Oct 6, 2026 | 16.16 | +0.04 ft | Provisional |
| Mon, Oct 5, 2026 | 16.12 | +0.07 ft | Provisional |
| Sun, Oct 4, 2026 | 16.05 | +0.08 ft | Provisional |
| Sat, Oct 3, 2026 | 15.97 | -0.05 ft | Provisional |
| Fri, Oct 2, 2026 | 16.02 | -0.07 ft | Provisional |
| Thu, Oct 1, 2026 | 16.09 | -0.06 ft | Provisional |
| Wed, Sep 30, 2026 | 16.15 | -0.04 ft | Provisional |
| Tue, Sep 29, 2026 | 16.19 | -0.01 ft | Provisional |
| Mon, Sep 28, 2026 | 16.20 | +0.07 ft | Provisional |
| Sun, Sep 27, 2026 | 16.13 | +0.10 ft | Provisional |
| Sat, Sep 26, 2026 | 16.03 | — | Provisional |
Current index calculated from verified local atmospheric, hydrographic & alert inputs.
Good for swimming (76/100), from 5 available inputs. Supporting this: No active official alerts for this lake. 0% chance of precipitation. Confidence is moderate (77%) because some inputs are unavailable or older than ideal.