Genesee River at Wellsville NY
USGS Site No: 04221000 • Genesee River • Allegany County, NY
Genesee River at Wellsville NY on the Genesee River is currently at 285 cfs (Normal — 63th percentile for this date) . Gage height: 4.94 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 | 32 | |
| 25th | Low threshold | 50 | |
| 50th (Median) | Normal (median) | 112 | |
| 75th | High threshold | 433 | Today: 285 cfs |
| 95th | Very High threshold | 1,700 |
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 | 320 | — |
| May 27, 2026 | 370 | — |
| May 26, 2026 | 467 | — |
| May 25, 2026 | 779 | — |
| May 24, 2026 | 513 | — |
| May 23, 2026 | 522 | — |
| May 22, 2026 | 217 | — |
| May 21, 2026 | 243 | — |
| May 20, 2026 | 266 | — |
| May 19, 2026 | 300 | — |
| May 18, 2026 | 342 | — |
| May 17, 2026 | 400 | — |
| May 16, 2026 | 455 | — |
| May 15, 2026 | 540 | — |
| Apr 21, 2026 | 883 | — |
| Apr 20, 2026 | 1,080 | — |
| Apr 19, 2026 | 1,730 | — |
| Apr 18, 2026 | 816 | — |
| Apr 17, 2026 | 1,000 | — |
| Apr 16, 2026 | 811 | — |
| Apr 15, 2026 | 535 | — |
| Apr 14, 2026 | 463 | — |
| Apr 13, 2026 | 493 | — |
| Apr 12, 2026 | 554 | — |
| Apr 11, 2026 | 666 | — |
| Apr 10, 2026 | 725 | — |
| Apr 9, 2026 | 851 | — |
| Apr 8, 2026 | 1,010 | — |
| Apr 7, 2026 | 1,290 | — |
| Apr 6, 2026 | 1,650 | — |
Station Information
- USGS Site No
- 04221000
- State
- NY
- County
- Allegany County
- Coordinates
- 42.1223, -77.9573
- Drainage Area
- 288 mi²
- Datum (ft)
- 1,469.5
- HUC Code
- 041300020503
Flood Stage Thresholds
- Action Stage
- 9.0 ft
- Flood Stage
- 11.0 ft
- Moderate Flood
- 14.0 ft
- Major Flood
- 17.0 ft
Currently 6.06 ft below flood stage.
Recent Extremes
- Max discharge
-
4,170 cfsMay 6, 2025
- Min discharge
-
16 cfsSep 22, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Oswayo Creek at Shinglehouse, PANormal16.6 mi · 116 cfs
-
Canacadea Creek Near Hornell NYHigh20.3 mi · 46 cfs
-
Canisteo River Below Canacadea Creek at Hornell NYHigh20.5 mi · 113 cfs
-
Canisteo River at Arkport NYNormal22.7 mi · 12 cfs
-
Allegheny River at Eldred, PANormal24.6 mi · 761 cfs