Iowa River at County Highway E49 Near Tama, IA
USGS Site No: 05451770 • Iowa River • Tama County, IA
Iowa River at County Highway E49 Near Tama, IA on the Iowa River is currently at 1,470 cfs (Normal — 39th percentile for this date) . Gage height: 4.71 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 | 606 | |
| 25th | Low threshold | 869 | |
| 50th (Median) | Normal (median) | 1,950 | Today: 1,470 cfs |
| 75th | High threshold | 3,380 | |
| 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 | 1,550 | — |
| May 27, 2026 | 1,640 | — |
| May 26, 2026 | 1,750 | — |
| May 25, 2026 | 1,870 | — |
| May 24, 2026 | 2,040 | — |
| May 23, 2026 | 2,220 | — |
| May 22, 2026 | 2,390 | — |
| May 21, 2026 | 2,670 | — |
| May 20, 2026 | 2,800 | — |
| May 19, 2026 | 2,170 | — |
| May 18, 2026 | 1,630 | — |
| May 17, 2026 | 1,380 | — |
| May 16, 2026 | 1,370 | — |
| May 15, 2026 | 1,360 | — |
| Apr 20, 2026 | 3,510 | — |
| Apr 19, 2026 | 4,240 | — |
| Apr 18, 2026 | 5,570 | — |
| Apr 17, 2026 | 6,100 | — |
| Apr 16, 2026 | 4,680 | — |
| Apr 15, 2026 | 3,290 | — |
| Apr 14, 2026 | 3,290 | — |
| Apr 13, 2026 | 3,650 | — |
| Apr 12, 2026 | 4,050 | — |
| Apr 11, 2026 | 4,570 | — |
| Apr 10, 2026 | 4,970 | — |
| Apr 9, 2026 | 5,250 | — |
| Apr 8, 2026 | 6,920 | — |
| Apr 7, 2026 | 8,460 | — |
| Apr 6, 2026 | 8,110 | — |
| Apr 5, 2026 | 6,980 | — |
Station Information
- USGS Site No
- 05451770
- State
- IA
- County
- Tama County
- Coordinates
- 41.9643, -92.6366
- Drainage Area
- 1,882 mi²
- Datum (ft)
- 810.5
- HUC Code
- 07080208
Flood Stage Thresholds
- Action Stage
- 11.0 ft
- Flood Stage
- 12.5 ft
- Moderate Flood
- 13.0 ft
- Major Flood
- 14.0 ft
Currently 7.79 ft below flood stage.
Recent Extremes
- Max discharge
-
13,800 cfsAug 1, 2025
- Min discharge
-
349 cfsDec 1, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Richland Creek Near Haven, IANormal9.5 mi · 36 cfs
-
Timber Creek Near Marshalltown, IANormal11.5 mi · 110 cfs
-
Iowa River at Marshalltown, IANormal15.6 mi · 1,110 cfs
-
Walnut Creek Near Hartwick, IANormal15.7 mi · 51 cfs
-
Salt Creek Near Elberon, IANormal16.6 mi · 116 cfs