Napa River near Napa CA
USGS Site No: 11458000 • Napa River • Napa County, CA
Napa River near Napa CA on the Napa River is currently at 28 cfs (High — 91th percentile for this date) . Gage height: 2.80 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for October 28 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 | 0 | |
| 50th (Median) | Normal (median) | 2 | |
| 75th | High threshold | 5 | |
| 95th | Very High threshold | 34 | Today: 28 cfs |
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) |
|---|---|---|
| May 28, 2026 | 32 | — |
| May 27, 2026 | 27 | — |
| May 26, 2026 | 27 | — |
| May 25, 2026 | 27 | — |
| May 24, 2026 | 27 | — |
| May 23, 2026 | 27 | — |
| May 22, 2026 | 28 | — |
| May 21, 2026 | 28 | — |
| May 20, 2026 | 30 | — |
| May 19, 2026 | 31 | — |
| May 18, 2026 | 31 | — |
| May 17, 2026 | 34 | — |
| May 16, 2026 | 35 | — |
| May 15, 2026 | 37 | — |
| Apr 20, 2026 | 47 | — |
| Apr 19, 2026 | 46 | — |
| Apr 18, 2026 | 47 | — |
| Apr 17, 2026 | 50 | — |
| Apr 16, 2026 | 54 | — |
| Apr 15, 2026 | 60 | — |
| Apr 14, 2026 | 69 | — |
| Apr 13, 2026 | 98 | — |
| Apr 12, 2026 | 118 | — |
| Apr 11, 2026 | 59 | — |
| Apr 10, 2026 | 47 | — |
| Apr 9, 2026 | 35 | — |
| Apr 8, 2026 | 36 | — |
| Apr 7, 2026 | 37 | — |
| Apr 6, 2026 | 38 | — |
| Apr 5, 2026 | 39 | — |
Station Information
- USGS Site No
- 11458000
- State
- CA
- County
- Napa County
- Coordinates
- 38.3682, -122.3033
- Drainage Area
- 218 mi²
- Datum (ft)
- 27.1
- HUC Code
- 18050002
Flood Stage Thresholds
- Action Stage
- 22.0 ft
- Flood Stage
- 25.0 ft
- Moderate Flood
- 26.0 ft
- Major Flood
- 28.0 ft
Currently 22.20 ft below flood stage.
Recent Extremes
- Max discharge
-
2,350 cfsJan 6, 2026
- Min discharge
-
0 cfsDec 7, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Nathanson C at Sonoma CAUnknown10.2 mi · 0 cfs
-
Sonoma C at Agua Caliente CAHigh10.8 mi · 11 cfs
-
Napa River near St Helena CAHigh12.9 mi · 13 cfs
-
Sonoma Creek at Kenwood CAVery High14.5 mi · 2 cfs
-
Putah C near Winters CAVery High15.7 mi · 545 cfs