Iowa River at Wapello, IA
USGS Site No: 05465500 • Iowa River • Louisa County, IA
Iowa River at Wapello, IA on the Iowa River is currently at 9,390 cfs (High — 78th percentile for this date) . Gage height: 14.46 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 | 1,340 | |
| 25th | Low threshold | 2,250 | |
| 50th (Median) | Normal (median) | 4,730 | |
| 75th | High threshold | 7,320 | |
| 95th | Very High threshold | 23,000 | Today: 9,390 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 | 10,000 | — |
| May 27, 2026 | 10,600 | — |
| May 26, 2026 | 11,600 | — |
| May 25, 2026 | 12,600 | — |
| May 24, 2026 | 13,000 | — |
| May 23, 2026 | 13,200 | — |
| May 22, 2026 | 13,300 | — |
| May 21, 2026 | 13,700 | — |
| May 20, 2026 | 11,600 | — |
| May 19, 2026 | 9,050 | — |
| May 18, 2026 | 8,340 | — |
| May 17, 2026 | 8,240 | — |
| May 16, 2026 | 8,470 | — |
| May 15, 2026 | 8,680 | — |
| Apr 20, 2026 | 33,800 | — |
| Apr 19, 2026 | 33,600 | — |
| Apr 18, 2026 | 35,000 | — |
| Apr 17, 2026 | 34,100 | — |
| Apr 16, 2026 | 30,000 | — |
| Apr 15, 2026 | 28,200 | — |
| Apr 14, 2026 | 30,200 | — |
| Apr 13, 2026 | 33,700 | — |
| Apr 12, 2026 | 38,000 | — |
| Apr 11, 2026 | 36,200 | — |
| Apr 10, 2026 | 31,700 | — |
| Apr 9, 2026 | 28,000 | — |
| Apr 8, 2026 | 25,500 | — |
| Apr 7, 2026 | 22,500 | — |
| Apr 6, 2026 | 18,600 | — |
| Apr 5, 2026 | 16,400 | — |
Station Information
- USGS Site No
- 05465500
- State
- IA
- County
- Louisa County
- Coordinates
- 41.1781, -91.1821
- Drainage Area
- 12,500 mi²
- Datum (ft)
- 538.1
- HUC Code
- 07080209
Flood Stage Thresholds
- Action Stage
- 18.5 ft
- Flood Stage
- 21.0 ft
- Moderate Flood
- 25.0 ft
- Major Flood
- 27.5 ft
Currently 6.54 ft below flood stage.
Recent Extremes
- Max discharge
-
41,500 cfsAug 2, 2025
- Min discharge
-
1,690 cfsDec 15, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Iowa River at Oakville, IANormal8.1 mi · 9,630 cfs
-
Iowa River at Columbus Junction, IAVery High11.0 mi · 9,630 cfs
-
Edwards River Near New Boston, ILNormal11.2 mi · 152 cfs
-
Pope Creek Near Keithsburg, ILNormal14.1 mi · 58 cfs
-
Cedar River Near Conesville, IAHigh16.9 mi · 5,790 cfs