Shawsheen River at Balmoral Street at Andover, MA
USGS Site No: 01100627 • Shawsheen River • Essex County, MA
Shawsheen River at Balmoral Street at Andover, MA on the Shawsheen River is currently at 44 cfs (Normal — 34th percentile for this date) . Gage height: 24.11 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for October 29 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 | 14 | |
| 25th | Low threshold | 28 | |
| 50th (Median) | Normal (median) | 74 | Today: 44 cfs |
| 75th | High threshold | 172 | |
| 95th | Very High threshold | 485 |
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 | 56 | — |
| May 27, 2026 | 80 | — |
| May 26, 2026 | 76 | — |
| May 25, 2026 | 61 | — |
| May 24, 2026 | 41 | — |
| May 23, 2026 | 38 | — |
| May 22, 2026 | 38 | — |
| May 21, 2026 | 39 | — |
| May 20, 2026 | 45 | — |
| May 19, 2026 | 53 | — |
| May 18, 2026 | 62 | — |
| May 17, 2026 | 74 | — |
| May 16, 2026 | 90 | — |
| May 15, 2026 | 78 | — |
| Apr 21, 2026 | 63 | — |
| Apr 20, 2026 | 71 | — |
| Apr 19, 2026 | 84 | — |
| Apr 18, 2026 | 95 | — |
| Apr 17, 2026 | 103 | — |
| Apr 16, 2026 | 94 | — |
| Apr 15, 2026 | 70 | — |
| Apr 14, 2026 | 50 | — |
| Apr 13, 2026 | 44 | — |
| Apr 12, 2026 | 46 | — |
| Apr 11, 2026 | 55 | — |
| Apr 10, 2026 | 51 | — |
| Apr 9, 2026 | 52 | — |
| Apr 8, 2026 | 58 | — |
| Apr 7, 2026 | 67 | — |
| Apr 6, 2026 | 79 | — |
Station Information
- USGS Site No
- 01100627
- State
- MA
- County
- Essex County
- Coordinates
- 42.6715, -71.1492
- Drainage Area
- 73 mi²
- Datum (ft)
- 34.2
- HUC Code
- 01070006
Flood Stage Thresholds
- Action Stage
- 28.0 ft
- Flood Stage
- 29.0 ft
- Moderate Flood
- 32.0 ft
- Major Flood
- 35.0 ft
Currently 4.89 ft below flood stage.
Recent Extremes
- Max discharge
-
435 cfsMay 25, 2025
- Min discharge
-
7 cfsSep 4, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Merrimack River below Concord River at Lowell, MANormal7.8 mi · 7,160 cfs
-
Shawsheen River Near Wilmington, MANormal7.9 mi · 18 cfs
-
Concord River Below River Meadow Brook, at Lowell, MANormal8.1 mi · 323 cfs
-
Ipswich River at South Middleton, MANormal9.4 mi · 29 cfs
-
Parker River at Byfield, MANormal11.8 mi · 4 cfs