Shawsheen River Near Wilmington, MA
USGS Site No: 01100600 • Shawsheen River • Middlesex County, MA
Shawsheen River Near Wilmington, MA on the Shawsheen River is currently at 18 cfs (Normal — 27th percentile for this date) . Gage height: 2.31 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 | 12 | |
| 25th | Low threshold | 17 | |
| 50th (Median) | Normal (median) | 29 | Today: 18 cfs |
| 75th | High threshold | 67 | |
| 95th | Very High threshold | 239 |
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 | 21 | — |
| May 27, 2026 | 28 | — |
| May 26, 2026 | 40 | — |
| May 25, 2026 | 32 | — |
| May 24, 2026 | 17 | — |
| May 23, 2026 | 17 | — |
| May 22, 2026 | 19 | — |
| May 21, 2026 | 21 | — |
| May 20, 2026 | 21 | — |
| May 19, 2026 | 23 | — |
| May 18, 2026 | 27 | — |
| May 17, 2026 | 35 | — |
| May 16, 2026 | 48 | — |
| May 15, 2026 | 56 | — |
| Apr 21, 2026 | 40 | — |
| Apr 20, 2026 | 46 | — |
| Apr 19, 2026 | 47 | — |
| Apr 18, 2026 | 60 | — |
| Apr 17, 2026 | 67 | — |
| Apr 16, 2026 | 68 | — |
| Apr 15, 2026 | 61 | — |
| Apr 14, 2026 | 33 | — |
| Apr 13, 2026 | 34 | — |
| Apr 12, 2026 | 36 | — |
| Apr 11, 2026 | 38 | — |
| Apr 10, 2026 | 44 | — |
| Apr 9, 2026 | 36 | — |
| Apr 8, 2026 | 40 | — |
| Apr 7, 2026 | 42 | — |
| Apr 6, 2026 | 50 | — |
Station Information
- USGS Site No
- 01100600
- State
- MA
- County
- Middlesex County
- Coordinates
- 42.5681, -71.2148
- Drainage Area
- 37 mi²
- Datum (ft)
- 79.6
- HUC Code
- 01070002
Flood Stage Thresholds
- Action Stage
- 5.0 ft
- Flood Stage
- 7.0 ft
- Moderate Flood
- 8.0 ft
- Major Flood
- 10.0 ft
Currently 4.69 ft below flood stage.
Recent Extremes
- Max discharge
-
339 cfsMay 24, 2025
- Min discharge
-
2 cfsSep 4, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Concord River Below River Meadow Brook, at Lowell, MANormal6.5 mi · 323 cfs
-
Merrimack River below Concord River at Lowell, MANormal6.9 mi · 7,160 cfs
-
Shawsheen River at Balmoral Street at Andover, MALow7.9 mi · 44 cfs
-
Aberjona River at Winchester, MALow9.2 mi · 9 cfs
- Normal