Santa Rosa C at Santa Rosa CA
USGS Site No: 11466200 • Sonoma County, CA
Santa Rosa C at Santa Rosa CA is currently at 19 cfs (Very High — 95th percentile for this date) . Gage height: 23.99 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for June 11 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.
| Percentile | Label | CFS Threshold | Today's Flow |
|---|---|---|---|
| 10th | Very Low threshold | 0 | |
| 25th | Low threshold | 2 | |
| 50th (Median) | Normal (median) | 4 | |
| 75th | High threshold | 10 | |
| 95th | Very High threshold | 0 |
30-Day Hydrograph
Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.
30-Day Flow History
| Date | Discharge (CFS) | Gage Ht (ft) |
|---|---|---|
| Apr 20, 2026 | 114 | — |
| Apr 19, 2026 | 13 | — |
| Apr 18, 2026 | 14 | — |
| Apr 17, 2026 | 15 | — |
| Apr 16, 2026 | 17 | — |
| Apr 15, 2026 | 20 | — |
| Apr 14, 2026 | 25 | — |
| Apr 9, 2026 | 9 | — |
| Apr 6, 2026 | 10 | — |
| Apr 5, 2026 | 11 | — |
| Apr 4, 2026 | 11 | — |
| Apr 3, 2026 | 12 | — |
| Apr 2, 2026 | 14 | — |
| Apr 1, 2026 | 16 | — |
| Mar 31, 2026 | 34 | — |
| Mar 30, 2026 | 10 | — |
| Mar 29, 2026 | 10 | — |
| Mar 28, 2026 | 11 | — |
| Mar 27, 2026 | 11 | — |
| Mar 26, 2026 | 11 | — |
| Mar 25, 2026 | 12 | — |
| Mar 24, 2026 | 12 | — |
| Mar 23, 2026 | 13 | — |
| Mar 22, 2026 | 13 | — |
| Mar 21, 2026 | 14 | — |
| Mar 20, 2026 | 15 | — |
| Mar 19, 2026 | 15 | — |
| Mar 18, 2026 | 16 | — |
| Mar 17, 2026 | 17 | — |
| Mar 16, 2026 | 18 | — |
Station Information
- USGS Site No
- 11466200
- State
- CA
- County
- Sonoma County
- Coordinates
- 38.4365, -122.7247
- Drainage Area
- 57 mi²
- Datum (ft)
- 102.4
- HUC Code
- 18010110
Flood Stage Thresholds
- Action Stage
- 40.0 ft
- Flood Stage
- 41.0 ft
- Moderate Flood
- 45.0 ft
- Major Flood
- 50.0 ft
Currently 17.01 ft below flood stage.
Recent Extremes
- Max discharge
-
1,150 cfsDec 22, 2025
- Min discharge
-
1 cfsOct 8, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Matanzas C at Santa Rosa CAUnknown1.2 mi · 3 cfs
-
Colgan C near Santa Rosa CAUnknown2.4 mi · 0 cfs
-
Colgan C near Sebastopol CANormal5.0 mi · 0 cfs
-
Laguna DE Santa Rosa C near Sebastopol CANormal5.7 mi · 4 cfs
-
Laguna DE Santa Rosa at Stony Pt Road near Cotati CAHigh5.9 mi · 6 cfs