Floyd River at James, IA
USGS Site No: 06600500 • Floyd River • Plymouth County, IA
Floyd River at James, IA on the Floyd River is currently at 861 cfs (Very High — 101th percentile for this date) . Gage height: 10.27 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 | 13 | |
| 25th | Low threshold | 37 | |
| 50th (Median) | Normal (median) | 65 | |
| 75th | High threshold | 159 | |
| 95th | Very High threshold | 550 |
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 | 966 | — |
| May 27, 2026 | 1,040 | — |
| May 26, 2026 | 978 | — |
| May 25, 2026 | 1,000 | — |
| May 24, 2026 | 922 | — |
| May 23, 2026 | 795 | — |
| May 22, 2026 | 643 | — |
| May 21, 2026 | 564 | — |
| May 20, 2026 | 599 | — |
| May 19, 2026 | 687 | — |
| May 18, 2026 | 1,010 | — |
| May 17, 2026 | 366 | — |
| May 16, 2026 | 313 | — |
| May 15, 2026 | 317 | — |
| Apr 20, 2026 | 289 | — |
| Apr 19, 2026 | 298 | — |
| Apr 18, 2026 | 310 | — |
| Apr 17, 2026 | 323 | — |
| Apr 16, 2026 | 336 | — |
| Apr 15, 2026 | 348 | — |
| Apr 14, 2026 | 363 | — |
| Apr 13, 2026 | 376 | — |
| Apr 12, 2026 | 384 | — |
| Apr 11, 2026 | 390 | — |
| Apr 10, 2026 | 404 | — |
| Apr 9, 2026 | 426 | — |
| Apr 8, 2026 | 442 | — |
| Apr 7, 2026 | 470 | — |
| Apr 6, 2026 | 501 | — |
| Apr 5, 2026 | 509 | — |
Station Information
- USGS Site No
- 06600500
- State
- IA
- County
- Plymouth County
- Coordinates
- 42.5764, -96.3116
- Drainage Area
- 886 mi²
- Datum (ft)
- 1,093.3
- HUC Code
- 10230002
Flood Stage Thresholds
- Action Stage
- 24.0 ft
- Flood Stage
- 26.0 ft
- Moderate Flood
- 30.0 ft
- Major Flood
- 34.0 ft
Currently 15.73 ft below flood stage.
Recent Extremes
- Max discharge
-
5,000 cfsJul 31, 2025
- Min discharge
-
70 cfsNov 30, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Perry Creek at 38th Street at Sioux City, IAVery High5.8 mi · 24 cfs
-
Missouri River at Sioux City, IANormal8.1 mi · 28,400 cfs
-
Perry Creek Near Millnerville, IANormal8.6 mi · 3 cfs
-
Big Sioux River at Sioux City, IAUnknown9.3 mi · 0 cfs
-
Big Sioux River Near Jefferson, SDNormal10.9 mi · 1,830 cfs