Big River Near Richwoods, MO
USGS Site No: 07018100 • Big River • Jefferson County, MO
Big River Near Richwoods, MO on the Big River is currently at 338 cfs (High — 77th percentile for this date) . Gage height: 2.91 ft. This station is at or above flood stage.
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 | 101 | |
| 25th | Low threshold | 123 | |
| 50th (Median) | Normal (median) | 164 | |
| 75th | High threshold | 277 | |
| 95th | Very High threshold | 874 | Today: 338 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 | 336 | — |
| May 27, 2026 | 334 | — |
| May 26, 2026 | 322 | — |
| May 25, 2026 | 330 | — |
| May 24, 2026 | 344 | — |
| May 23, 2026 | 357 | — |
| May 22, 2026 | 374 | — |
| May 21, 2026 | 395 | — |
| May 20, 2026 | 438 | — |
| May 19, 2026 | 427 | — |
| May 18, 2026 | 364 | — |
| May 17, 2026 | 360 | — |
| May 16, 2026 | 373 | — |
| May 15, 2026 | 396 | — |
| Apr 20, 2026 | 1,470 | — |
| Apr 19, 2026 | 2,810 | — |
| Apr 18, 2026 | 1,580 | — |
| Apr 17, 2026 | 720 | — |
| Apr 16, 2026 | 587 | — |
| Apr 15, 2026 | 318 | — |
| Apr 14, 2026 | 325 | — |
| Apr 13, 2026 | 341 | — |
| Apr 12, 2026 | 357 | — |
| Apr 11, 2026 | 374 | — |
| Apr 10, 2026 | 400 | — |
| Apr 9, 2026 | 441 | — |
| Apr 8, 2026 | 506 | — |
| Apr 7, 2026 | 612 | — |
| Apr 6, 2026 | 777 | — |
| Apr 5, 2026 | 980 | — |
Station Information
- USGS Site No
- 07018100
- State
- MO
- County
- Jefferson County
- Coordinates
- 38.1596, -90.7061
- Drainage Area
- 735 mi²
- Datum (ft)
- 522.5
- HUC Code
- 07140104
Flood Stage Thresholds
- Action Stage
- 15.0 ft
Recent Extremes
- Max discharge
-
19,500 cfsMar 6, 2026
- Min discharge
-
44 cfsOct 10, 2025
Computed from the local daily-values archive.
Nearby Gauges
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Meramec River at Pacific, MOVery High21.3 mi · 1,330 cfs
-
Meramec River Near Sullivan, MOHigh21.9 mi · 585 cfs
-
Bourbeuse River at Union, MOHigh25.2 mi · 366 cfs
-
Missouri River Near Labadie, MOVery High29.0 mi · 116,000 cfs
-
Huzzah Creek Near Steelville, MOHigh29.9 mi · 104 cfs