Monona-Harrison Ditch Near Turin, IA
USGS Site No: 06602400 • Monona-Harrison Ditch • Monona County, IA
Monona-Harrison Ditch Near Turin, IA on the Monona-Harrison Ditch is currently at 488 cfs (High — 90th percentile for this date) . Gage height: 6.18 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 | 47 | |
| 25th | Low threshold | 69 | |
| 50th (Median) | Normal (median) | 120 | |
| 75th | High threshold | 210 | |
| 95th | Very High threshold | 580 | Today: 488 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 | 520 | — |
| May 27, 2026 | 562 | — |
| May 26, 2026 | 628 | — |
| May 25, 2026 | 747 | — |
| May 24, 2026 | 930 | — |
| May 23, 2026 | 1,020 | — |
| May 22, 2026 | 390 | — |
| May 21, 2026 | 314 | — |
| May 20, 2026 | 372 | — |
| May 19, 2026 | 444 | — |
| May 18, 2026 | 330 | — |
| May 17, 2026 | 214 | — |
| May 16, 2026 | 187 | — |
| May 15, 2026 | 189 | — |
| Apr 20, 2026 | 233 | — |
| Apr 19, 2026 | 234 | — |
| Apr 18, 2026 | 240 | — |
| Apr 17, 2026 | 261 | — |
| Apr 16, 2026 | 278 | — |
| Apr 15, 2026 | 286 | — |
| Apr 14, 2026 | 297 | — |
| Apr 13, 2026 | 314 | — |
| Apr 12, 2026 | 324 | — |
| Apr 11, 2026 | 311 | — |
| Apr 10, 2026 | 317 | — |
| Apr 9, 2026 | 334 | — |
| Apr 8, 2026 | 360 | — |
| Apr 7, 2026 | 372 | — |
| Apr 6, 2026 | 399 | — |
| Apr 5, 2026 | 442 | — |
Station Information
- USGS Site No
- 06602400
- State
- IA
- County
- Monona County
- Coordinates
- 41.9649, -95.9918
- Drainage Area
- 900 mi²
- Datum (ft)
- 1,015.5
- HUC Code
- 10230004
Flood Stage Thresholds
- Action Stage
- 21.0 ft
- Flood Stage
- 23.0 ft
- Moderate Flood
- 25.0 ft
- Major Flood
- 28.0 ft
Currently 16.82 ft below flood stage.
Recent Extremes
- Max discharge
-
1,020 cfsMay 23, 2026
- Min discharge
-
51 cfsNov 29, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Little Sioux River Near Turin, IAVery High1.0 mi · 4,140 cfs
-
Soldier River at Pisgah, IAHigh9.8 mi · 174 cfs
-
Missouri River at Decatur, NENormal13.2 mi · 28,800 cfs
-
Maple River at Mapleton, IAHigh16.2 mi · 436 cfs
-
Blackbird Creek Near Macy, Nebr.Unknown19.4 mi · 0 cfs