San Bernard Rv near Sweeny, TX
USGS Site No: 08117705 • San Bernard River • Brazoria County, TX
San Bernard Rv near Sweeny, TX on the San Bernard River is currently at 2,780 cfs (Very High — 95th percentile for this date) . Gage height: 4.13 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 | 36 | |
| 25th | Low threshold | 39 | |
| 50th (Median) | Normal (median) | 79 | |
| 75th | High threshold | 490 | |
| 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) |
|---|---|---|
| May 28, 2026 | 4,110 | — |
| May 27, 2026 | 1,840 | — |
| May 26, 2026 | 953 | — |
| May 25, 2026 | 2,650 | — |
| May 24, 2026 | 3,750 | — |
| May 23, 2026 | 935 | — |
| May 22, 2026 | 1,090 | — |
| May 21, 2026 | 1,780 | — |
| May 20, 2026 | 1,080 | — |
| May 19, 2026 | 74 | — |
| May 18, 2026 | 64 | — |
| May 17, 2026 | 72 | — |
| May 16, 2026 | 67 | — |
| May 15, 2026 | 59 | — |
| Apr 20, 2026 | 47 | — |
| Apr 19, 2026 | 21 | — |
| Apr 18, 2026 | 43 | — |
| Apr 17, 2026 | 56 | — |
| Apr 16, 2026 | 50 | — |
| Apr 15, 2026 | 47 | — |
| Apr 14, 2026 | 37 | — |
| Apr 13, 2026 | 36 | — |
| Apr 12, 2026 | 56 | — |
| Apr 11, 2026 | 64 | — |
| Apr 10, 2026 | 38 | — |
| Apr 9, 2026 | 42 | — |
| Apr 8, 2026 | 30 | — |
| Apr 7, 2026 | 20 | — |
| Apr 6, 2026 | 20 | — |
| Apr 5, 2026 | 21 | — |
Station Information
- USGS Site No
- 08117705
- State
- TX
- County
- Brazoria County
- Coordinates
- 29.1119, -95.6767
- Drainage Area
- 878 mi²
- Datum (ft)
- 0.0
- HUC Code
- 12090401
Flood Stage Thresholds
- Action Stage
- 5.0 ft
- Flood Stage
- 7.0 ft
- Moderate Flood
- 11.0 ft
- Major Flood
- 16.0 ft
Currently 2.87 ft below flood stage.
Recent Extremes
- Max discharge
-
5,520 cfsJun 14, 2025
- Min discharge
-
6 cfsJan 21, 2026
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Caney Ck at Sh 35 near Van Vleck, TXVery High12.3 mi · 712 cfs
-
Brazos Rv near Rosharon, TXHigh17.4 mi · 8,480 cfs
-
San Bernard Rv near Boling, TXHigh19.1 mi · 1,660 cfs
-
Colorado Rv near Bay City, TXNormal22.4 mi · 2,310 cfs
-
Big Ck near Needville, TXHigh26.0 mi · 93 cfs