Iowa River at Iowa City, IA
USGS Site No: 05454500 • Iowa River • Johnson County, IA
Iowa River at Iowa City, IA on the Iowa River is currently at 2,420 cfs (High — 78th percentile for this date) . Gage height: 11.99 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 | 154 | |
| 25th | Low threshold | 222 | |
| 50th (Median) | Normal (median) | 834 | |
| 75th | High threshold | 1,630 | |
| 95th | Very High threshold | 6,400 | Today: 2,420 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 | 2,700 | — |
| May 27, 2026 | 2,820 | — |
| May 26, 2026 | 3,140 | — |
| May 25, 2026 | 3,870 | — |
| May 24, 2026 | 4,210 | — |
| May 23, 2026 | 4,090 | — |
| May 22, 2026 | 3,820 | — |
| May 21, 2026 | 3,450 | — |
| May 20, 2026 | 3,320 | — |
| May 19, 2026 | 2,780 | — |
| May 18, 2026 | 2,120 | — |
| May 17, 2026 | 1,890 | — |
| May 16, 2026 | 1,800 | — |
| May 15, 2026 | 1,930 | — |
| Apr 20, 2026 | 8,800 | — |
| Apr 19, 2026 | 8,870 | — |
| Apr 18, 2026 | 9,000 | — |
| Apr 17, 2026 | 9,470 | — |
| Apr 16, 2026 | 10,100 | — |
| Apr 15, 2026 | 10,000 | — |
| Apr 14, 2026 | 9,530 | — |
| Apr 13, 2026 | 9,130 | — |
| Apr 12, 2026 | 8,640 | — |
| Apr 11, 2026 | 8,650 | — |
| Apr 10, 2026 | 8,260 | — |
| Apr 9, 2026 | 7,140 | — |
| Apr 8, 2026 | 6,620 | — |
| Apr 7, 2026 | 6,380 | — |
| Apr 6, 2026 | 5,320 | — |
| Apr 5, 2026 | 3,660 | — |
Station Information
- USGS Site No
- 05454500
- State
- IA
- County
- Johnson County
- Coordinates
- 41.6567, -91.5410
- Drainage Area
- 3,271 mi²
- Datum (ft)
- 617.1
- HUC Code
- 07080209
Flood Stage Thresholds
- Action Stage
- 21.0 ft
- Flood Stage
- 23.5 ft
- Moderate Flood
- 24.5 ft
- Major Flood
- 26.0 ft
Currently 11.51 ft below flood stage.
Recent Extremes
- Max discharge
-
10,700 cfsAug 10, 2025
- Min discharge
-
411 cfsJan 24, 2026
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
South Branch Ralston Creek at Iowa City, IALow1.8 mi · 0 cfs
-
Muddy Creek at Coralville, IANormal3.2 mi · 4 cfs
-
Clear Creek Near Coralville, IANormal3.3 mi · 36 cfs
-
Rapid Creek Near Iowa City, IANormal4.1 mi · 7 cfs
-
Iowa River Below Coralville Dam near Coralville, IAHigh4.1 mi · 2,390 cfs