Assabet River at Maynard, MA
USGS Site No: 01097000 • Assabet River • Middlesex County, MA
Assabet River at Maynard, MA on the Assabet River is currently at 53 cfs (Normal — 34th percentile for this date) . Gage height: 1.94 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 | 22 | |
| 25th | Low threshold | 43 | |
| 50th (Median) | Normal (median) | 73 | Today: 53 cfs |
| 75th | High threshold | 159 | |
| 95th | Very High threshold | 390 |
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 | 68 | — |
| May 27, 2026 | 88 | — |
| May 26, 2026 | 106 | — |
| May 25, 2026 | 83 | — |
| May 24, 2026 | 57 | — |
| May 23, 2026 | 58 | — |
| May 22, 2026 | 80 | — |
| May 21, 2026 | 117 | — |
| May 20, 2026 | 104 | — |
| May 19, 2026 | 66 | — |
| May 18, 2026 | 76 | — |
| May 17, 2026 | 102 | — |
| May 16, 2026 | 148 | — |
| May 15, 2026 | 121 | — |
| Apr 21, 2026 | 115 | — |
| Apr 20, 2026 | 128 | — |
| Apr 19, 2026 | 139 | — |
| Apr 18, 2026 | 157 | — |
| Apr 17, 2026 | 165 | — |
| Apr 16, 2026 | 140 | — |
| Apr 15, 2026 | 108 | — |
| Apr 14, 2026 | 92 | — |
| Apr 13, 2026 | 94 | — |
| Apr 12, 2026 | 100 | — |
| Apr 11, 2026 | 107 | — |
| Apr 10, 2026 | 119 | — |
| Apr 9, 2026 | 124 | — |
| Apr 8, 2026 | 133 | — |
| Apr 7, 2026 | 144 | — |
| Apr 6, 2026 | 157 | — |
Station Information
- USGS Site No
- 01097000
- State
- MA
- County
- Middlesex County
- Coordinates
- 42.4320, -71.4498
- Drainage Area
- 116 mi²
- Datum (ft)
- 146.0
- HUC Code
- 01070005
Flood Stage Thresholds
- Action Stage
- 4.5 ft
- Flood Stage
- 5.0 ft
- Moderate Flood
- 6.0 ft
- Major Flood
- 7.0 ft
Currently 3.06 ft below flood stage.
Recent Extremes
- Max discharge
-
954 cfsMay 24, 2025
- Min discharge
-
15 cfsAug 19, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Nashoba Brook Near Acton, MANormal6.0 mi · 15 cfs
-
Sudbury River at Saxonville, MANormal7.8 mi · 116 cfs
-
Cochituate Bk below Lake Cochituate at Framingham, MANormal8.8 mi · 10 cfs
-
Stony Brook at Viles Street, Near Weston, MANormal8.8 mi · 5 cfs
-
Hobbs Brook at Mill St near Lincoln, MANormal9.2 mi · 0 cfs