Great Miami River at Dayton OH
USGS Site No: 03270500 • Great Miami River • Montgomery County, OH
Great Miami River at Dayton OH on the Great Miami River is currently at 10,100 cfs (Very High — 100th percentile for this date) . Gage height: 28.95 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for October 27 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 | 341 | |
| 25th | Low threshold | 457 | |
| 50th (Median) | Normal (median) | 614 | |
| 75th | High threshold | 1,070 | |
| 95th | Very High threshold | 6,770 |
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 | 18,900 | — |
| May 27, 2026 | 10,800 | — |
| May 26, 2026 | 8,020 | — |
| May 25, 2026 | 13,400 | — |
| May 24, 2026 | 23,800 | — |
| May 23, 2026 | 18,800 | — |
| May 22, 2026 | 9,480 | — |
| May 21, 2026 | 13,000 | — |
| May 20, 2026 | 9,960 | — |
| May 19, 2026 | 2,680 | — |
| May 18, 2026 | 1,460 | — |
| May 17, 2026 | 1,590 | — |
| May 16, 2026 | 1,470 | — |
| May 15, 2026 | 1,570 | — |
| Apr 21, 2026 | 1,150 | — |
| Apr 20, 2026 | 1,230 | — |
| Apr 19, 2026 | 1,350 | — |
| Apr 18, 2026 | 1,470 | — |
| Apr 17, 2026 | 1,650 | — |
| Apr 16, 2026 | 1,510 | — |
| Apr 15, 2026 | 1,340 | — |
| Apr 14, 2026 | 1,400 | — |
| Apr 13, 2026 | 1,500 | — |
| Apr 12, 2026 | 1,570 | — |
| Apr 11, 2026 | 1,680 | — |
| Apr 10, 2026 | 1,860 | — |
| Apr 9, 2026 | 2,100 | — |
| Apr 8, 2026 | 2,410 | — |
| Apr 7, 2026 | 2,840 | — |
| Apr 6, 2026 | 3,630 | — |
Station Information
- USGS Site No
- 03270500
- State
- OH
- County
- Montgomery County
- Coordinates
- 39.7653, -84.1974
- Drainage Area
- 2,511 mi²
- Datum (ft)
- 699.2
- HUC Code
- 05080002
Flood Stage Thresholds
- Action Stage
- 29.5 ft
- Flood Stage
- 41.0 ft
- Moderate Flood
- 44.0 ft
- Major Flood
- 48.0 ft
Currently 12.05 ft below flood stage.
Recent Extremes
- Max discharge
-
23,800 cfsMay 24, 2026
- Min discharge
-
317 cfsOct 3, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Wolf Creek at Dayton OHVery High2.1 mi · 144 cfs
-
Mad River Near Dayton OHVery High6.2 mi · 2,550 cfs
-
Holes Creek Near Kettering OHHigh7.7 mi · 23 cfs
-
Great Miami River at Taylorsville OHVery High7.8 mi · 4,010 cfs
-
Stillwater River at Englewood OHVery High8.6 mi · 4,220 cfs