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The linked gauge for Green Peter Reservoir reported 876.31 ft at its latest stored observation on Oct 10, 2026, on a falling 30-day trend (-27.28 ft).
Frost Advisory issued October 10 at 10:13AM PDT until October 11 at 9:00AM PDT by NWS Portland OR
Local gage height: 876.31 ft
-27.28 ft net change over past 30 days
Verified freshwater recreation waterbody
Refreshing (60–70°F) · Cool swim · Moderate comfort
MIDDLE SANTIAM R BLW GREEN PETER DAM NR FOSTER, OR · Oct 10, 7:50 PM UTC
| Observation Date | Gage height (ft) | 24h Change | Approval Status |
|---|---|---|---|
| Fri, Oct 9, 2026 | 876.97 | -1.36 ft | Provisional |
| Thu, Oct 8, 2026 | 878.33 | -1.33 ft | Provisional |
| Wed, Oct 7, 2026 | 879.66 | -1.26 ft | Provisional |
| Tue, Oct 6, 2026 | 880.92 | -1.26 ft | Provisional |
| Mon, Oct 5, 2026 | 882.18 | -2.51 ft | Provisional |
| Sun, Oct 4, 2026 | 884.69 | -0.29 ft | Provisional |
| Sat, Oct 3, 2026 | 884.98 | -1.24 ft | Provisional |
| Fri, Oct 2, 2026 | 886.22 | -1.23 ft | Provisional |
| Thu, Oct 1, 2026 | 887.45 | -0.82 ft | Provisional |
| Wed, Sep 30, 2026 | 888.27 | -0.93 ft | Provisional |
| Tue, Sep 29, 2026 | 889.20 | -0.96 ft | Provisional |
| Mon, Sep 28, 2026 | 890.16 | -0.93 ft | Provisional |
| Sun, Sep 27, 2026 | 891.09 | -0.92 ft | Provisional |
| Sat, Sep 26, 2026 | 892.01 | — | Provisional |
Current index calculated from verified local atmospheric, hydrographic & alert inputs.
Fair for swimming (59/100), from 5 available inputs. Supporting this: 2% chance of precipitation. Wind 2 mph from the north-northeast. Working against it: Air temperature 47°F. Confidence is moderate (75%) because some inputs are unavailable or older than ideal.