Connecticut River at I-391 Bridge at Holyoke, MA
USGS Site No: 01172010 • Connecticut River • Hampden County, MA
Connecticut River at I-391 Bridge at Holyoke, MA on the Connecticut River is currently at 10,600 cfs (Normal — 54th percentile for this date) . Gage height: 7.72 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 | 4,550 | |
| 25th | Low threshold | 7,460 | |
| 50th (Median) | Normal (median) | 9,780 | |
| 75th | High threshold | 15,100 | Today: 10,600 cfs |
| 95th | Very High threshold | 45,000 |
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 | 16,800 | — |
| May 27, 2026 | 19,000 | — |
| May 26, 2026 | 16,900 | — |
| May 25, 2026 | 10,500 | — |
| May 24, 2026 | 9,080 | — |
| May 23, 2026 | 9,130 | — |
| May 22, 2026 | 12,200 | — |
| May 21, 2026 | 15,900 | — |
| May 20, 2026 | 17,000 | — |
| May 19, 2026 | 22,300 | — |
| May 18, 2026 | 33,800 | — |
| May 17, 2026 | 37,500 | — |
| May 16, 2026 | 38,000 | — |
| May 15, 2026 | 22,000 | — |
| Apr 20, 2026 | 32,100 | — |
| Apr 19, 2026 | 32,100 | — |
| Apr 18, 2026 | 31,700 | — |
| Apr 17, 2026 | 30,300 | — |
| Apr 16, 2026 | 28,000 | — |
| Apr 15, 2026 | 22,400 | — |
| Apr 14, 2026 | 22,300 | — |
| Apr 13, 2026 | 23,300 | — |
| Apr 12, 2026 | 23,700 | — |
| Apr 11, 2026 | 23,500 | — |
| Apr 10, 2026 | 21,200 | — |
| Apr 9, 2026 | 24,500 | — |
| Apr 8, 2026 | 27,100 | — |
| Apr 7, 2026 | 26,800 | — |
| Apr 6, 2026 | 31,900 | — |
| Apr 5, 2026 | 30,200 | — |
Station Information
- USGS Site No
- 01172010
- State
- MA
- County
- Hampden County
- Coordinates
- 42.1915, -72.6093
- Drainage Area
- 8,332 mi²
- Datum (ft)
- 63.0
- HUC Code
- 010802010702
Flood Stage Thresholds
- Action Stage
- 25.5 ft
- Flood Stage
- 26.5 ft
- Moderate Flood
- 29.5 ft
- Major Flood
- 32.5 ft
Currently 18.78 ft below flood stage.
Recent Extremes
- Max discharge
-
74,700 cfsMay 11, 2025
- Min discharge
-
1,400 cfsOct 8, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Connecticut River at Thompsonville, CTNormal14.1 mi · 12,000 cfs
-
Stony Brook Near West Suffield, CTNormal16.8 mi · 4 cfs
-
Broad Brook at Broad Brook, CTNormal19.4 mi · 17 cfs
-
Hubbard River Near West Hartland, CTNormal20.0 mi · 8 cfs
-
Farmington River at Tariffville, CTVery Low21.0 mi · 430 cfs