Russian River level at Guerneville
California · Tubing & floating
Measured at USGS 11467000 — RUSSIAN R A HACIENDA BRIDGE NR GUERNEVILLE CA · NWS forecast point RIOC1
Reading taken · as of 48 min ago
Running thin — a slow, scrapey float
At 100 CFS, this gauge is running 61% of normal for mid-September — below the 163 CFS median USGS has recorded for this date across 86 years of record (1940–2026).
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Flood stages at Guerneville
National Weather Service categories for gauge RIOC1, WFO MTR. Impact wording is the NWS's own, verbatim.
-
Action 31.0 ft
- Right now 1.06 ft
NWS forecast: 1.06 ft by .
Flow history at Guerneville
Daily values from USGS 11467000, updated every 15 to 60 minutes; NWS forecast for RIOC1 reissued through the day. Provisional.
Highest crests on record at Guerneville
12 on record
| Stage | Flow | Date |
|---|---|---|
| 49.70 ft | 90,100 CFS | Dec 23, 1955 |
| 49.60 ft | 93,400 CFS | Dec 23, 1964 |
| 48.56 ft | 102,000 CFS | Feb 18, 1986 |
| 48.01 ft | 93,900 CFS | Jan 9, 1995 |
| 45.28 ft | 77,000 CFS | Jan 5, 1966 |
| 44.60 ft | 82,120 CFS | Jan 2, 1997 |
| 43.95 ft | 72,900 CFS | Jan 24, 1970 |
| 43.70 ft | 71,800 CFS | Feb 1, 1963 |
| 43.18 ft | 74,000 CFS | Jan 17, 1974 |
| 42.95 ft | 68,700 CFS | Feb 25, 1958 |
Crests published by the National Weather Service.
About Russian River at Guerneville
In California — the reading paddlers, anglers and outfitters here check before committing to a shuttle. Summer float and a notorious winter flood record.
Russian River at Guerneville — common questions
3 questions
Does rain upstream change Russian River at Guerneville quickly?
Yes. It is free-flowing, so rain upstream moves it directly. Several feet in a few hours is normal after a heavy storm.
Is Russian River at Guerneville high or low for this time of year?
The USGS median flow for mid-September here is 163 CFS, from 86 years of record (1940–2026). Today is 61% of it. The comparison is what makes the raw number mean anything: the same reading is a drought on one river and a flood on another.
How often does this reading update?
USGS transmits from gauge 11467000 every 15 to 60 minutes, and the National Weather Service reissues the flood forecast for RIOC1 a few times a day — more often when the river is rising. This page refreshes from both when you open it. The timestamp is in the gauge's local time.