Green River Near Colrain, MA
USGS Site No: 01170100 • Green River • Franklin County, MA
Green River Near Colrain, MA on the Green River is currently at 39 cfs (Normal — 45th percentile for this date) . Gage height: 2.93 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 | 12 | |
| 25th | Low threshold | 19 | |
| 50th (Median) | Normal (median) | 43 | Today: 39 cfs |
| 75th | High threshold | 106 | |
| 95th | Very High threshold | 427 |
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 | 45 | — |
| May 27, 2026 | 56 | — |
| May 26, 2026 | 78 | — |
| May 25, 2026 | 117 | — |
| May 24, 2026 | 57 | — |
| May 23, 2026 | 36 | — |
| May 22, 2026 | 38 | — |
| May 21, 2026 | 41 | — |
| May 20, 2026 | 47 | — |
| May 19, 2026 | 50 | — |
| May 18, 2026 | 56 | — |
| May 17, 2026 | 65 | — |
| May 16, 2026 | 80 | — |
| May 15, 2026 | 109 | — |
| Apr 21, 2026 | 88 | — |
| Apr 20, 2026 | 111 | — |
| Apr 19, 2026 | 108 | — |
| Apr 18, 2026 | 84 | — |
| Apr 17, 2026 | 96 | — |
| Apr 16, 2026 | 105 | — |
| Apr 15, 2026 | 121 | — |
| Apr 14, 2026 | 86 | — |
| Apr 13, 2026 | 85 | — |
| Apr 12, 2026 | 88 | — |
| Apr 11, 2026 | 98 | — |
| Apr 10, 2026 | 103 | — |
| Apr 9, 2026 | 111 | — |
| Apr 8, 2026 | 119 | — |
| Apr 7, 2026 | 132 | — |
| Apr 6, 2026 | 148 | — |
Station Information
- USGS Site No
- 01170100
- State
- MA
- County
- Franklin County
- Coordinates
- 42.7034, -72.6706
- Drainage Area
- 41 mi²
- Datum (ft)
- 434.5
- HUC Code
- 01080203
Flood Stage Thresholds
- Action Stage
- 6.0 ft
- Flood Stage
- 7.0 ft
- Moderate Flood
- 9.0 ft
- Major Flood
- 12.0 ft
Currently 4.07 ft below flood stage.
Recent Extremes
- Max discharge
-
896 cfsMay 5, 2025
- Min discharge
-
5 cfsSep 22, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
North River at Shattuckville, MANormal5.3 mi · 62 cfs
-
Connecticut River at Montague City, MANormal9.8 mi · 16,000 cfs
-
Connecticut River Near Northfield, MANormal10.2 mi · 9,230 cfs
-
Deerfield River at Charlemont, MANormal10.8 mi · 355 cfs
-
South River Near Conway, MANormal11.2 mi · 20 cfs