Squannacook River Near West Groton, MA
USGS Site No: 01096000 • Squannacook River • Middlesex County, MA
Squannacook River Near West Groton, MA on the Squannacook River is currently at 62 cfs (Normal — 67th percentile for this date) . Gage height: 2.18 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 | 13 | |
| 25th | Low threshold | 21 | |
| 50th (Median) | Normal (median) | 35 | |
| 75th | High threshold | 75 | Today: 62 cfs |
| 95th | Very High threshold | 276 |
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 | 89 | — |
| May 27, 2026 | 111 | — |
| May 26, 2026 | 149 | — |
| May 25, 2026 | 104 | — |
| May 24, 2026 | 54 | — |
| May 23, 2026 | 55 | — |
| May 22, 2026 | 62 | — |
| May 21, 2026 | 72 | — |
| May 20, 2026 | 80 | — |
| May 19, 2026 | 93 | — |
| May 18, 2026 | 116 | — |
| May 17, 2026 | 150 | — |
| May 16, 2026 | 212 | — |
| May 15, 2026 | 222 | — |
| Apr 21, 2026 | 103 | — |
| Apr 20, 2026 | 114 | — |
| Apr 19, 2026 | 123 | — |
| Apr 18, 2026 | 140 | — |
| Apr 17, 2026 | 142 | — |
| Apr 16, 2026 | 139 | — |
| Apr 15, 2026 | 116 | — |
| Apr 14, 2026 | 92 | — |
| Apr 13, 2026 | 87 | — |
| Apr 12, 2026 | 91 | — |
| Apr 11, 2026 | 98 | — |
| Apr 10, 2026 | 104 | — |
| Apr 9, 2026 | 111 | — |
| Apr 8, 2026 | 119 | — |
| Apr 7, 2026 | 127 | — |
| Apr 6, 2026 | 141 | — |
Station Information
- USGS Site No
- 01096000
- State
- MA
- County
- Middlesex County
- Coordinates
- 42.6343, -71.6578
- Drainage Area
- 66 mi²
- Datum (ft)
- 243.5
- HUC Code
- 01070004
Flood Stage Thresholds
- Action Stage
- 6.0 ft
- Flood Stage
- 7.0 ft
- Moderate Flood
- 8.5 ft
- Major Flood
- 9.5 ft
Currently 4.82 ft below flood stage.
Recent Extremes
- Max discharge
-
1,130 cfsMay 10, 2025
- Min discharge
-
4 cfsAug 13, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
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Nashua River at East Pepperell, MANormal4.8 mi · 282 cfs
-
North Nashua River at Fitchburg, MANormal7.7 mi · 87 cfs
-
North Nashua River Near Leominster, MANormal10.2 mi · 127 cfs
-
Nashua River, Water Street Bridge, at Clinton, MAVery Low14.8 mi · 3 cfs
-
Nashoba Brook Near Acton, MANormal15.4 mi · 15 cfs