Little Sioux River at Linn Grove, IA
USGS Site No: 06605850 • Little Sioux River • Buena Vista County, IA
Little Sioux River at Linn Grove, IA on the Little Sioux River is currently at 2,320 cfs (High — 78th percentile for this date) . Gage height: 10.85 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 | 243 | |
| 25th | Low threshold | 554 | |
| 50th (Median) | Normal (median) | 996 | |
| 75th | High threshold | 2,010 | |
| 95th | Very High threshold | 4,160 | Today: 2,320 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 | 2,800 | — |
| May 27, 2026 | 2,950 | — |
| May 26, 2026 | 2,860 | — |
| May 25, 2026 | 2,630 | — |
| May 24, 2026 | 2,260 | — |
| May 23, 2026 | 1,660 | — |
| May 22, 2026 | 1,410 | — |
| May 21, 2026 | 1,470 | — |
| May 20, 2026 | 1,490 | — |
| May 19, 2026 | 1,120 | — |
| May 18, 2026 | 757 | — |
| May 17, 2026 | 698 | — |
| May 16, 2026 | 723 | — |
| May 15, 2026 | 753 | — |
| Apr 19, 2026 | 808 | — |
| Apr 18, 2026 | 876 | — |
| Apr 17, 2026 | 942 | — |
| Apr 16, 2026 | 1,010 | — |
| Apr 15, 2026 | 1,050 | — |
| Apr 14, 2026 | 1,000 | — |
| Apr 13, 2026 | 968 | — |
| Apr 12, 2026 | 984 | — |
| Apr 11, 2026 | 1,020 | — |
| Apr 10, 2026 | 1,070 | — |
| Apr 9, 2026 | 1,150 | — |
| Apr 8, 2026 | 1,250 | — |
| Apr 7, 2026 | 1,360 | — |
| Apr 6, 2026 | 1,480 | — |
| Apr 5, 2026 | 1,460 | — |
| Apr 4, 2026 | 1,260 | — |
Station Information
- USGS Site No
- 06605850
- State
- IA
- County
- Buena Vista County
- Coordinates
- 42.8963, -95.2430
- Drainage Area
- 1,548 mi²
- Datum (ft)
- 1,223.9
- HUC Code
- 10230003
Flood Stage Thresholds
- Action Stage
- 14.0 ft
- Flood Stage
- 16.5 ft
- Moderate Flood
- 20.0 ft
- Major Flood
- 22.5 ft
Currently 5.65 ft below flood stage.
Recent Extremes
- Max discharge
-
3,480 cfsAug 2, 2025
- Min discharge
-
132 cfsNov 29, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Ocheyedan River Near Spencer, IANormal16.1 mi · 581 cfs
-
Des Moines River at Emmetsburg, IANormal31.4 mi · 1,220 cfs
-
Floyd River at Alton, IAHigh38.8 mi · 278 cfs
-
North Raccoon River Near Sac City, IANormal39.6 mi · 542 cfs
-
Little Sioux River at Correctionville, IAHigh40.0 mi · 3,810 cfs