Charles River at Wellesley, MA
USGS Site No: 01104200 • Charles River • Norfolk County, MA
Charles River at Wellesley, MA on the Charles River is currently at 102 cfs (Normal — 37th percentile for this date) . Gage height: 3.05 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 | 42 | |
| 25th | Low threshold | 70 | |
| 50th (Median) | Normal (median) | 135 | Today: 102 cfs |
| 75th | High threshold | 262 | |
| 95th | Very High threshold | 717 |
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 | 108 | — |
| May 27, 2026 | 97 | — |
| May 26, 2026 | 97 | — |
| May 25, 2026 | 98 | — |
| May 24, 2026 | 97 | — |
| May 23, 2026 | 98 | — |
| May 22, 2026 | 99 | — |
| May 21, 2026 | 99 | — |
| May 20, 2026 | 89 | — |
| May 19, 2026 | 103 | — |
| May 18, 2026 | 111 | — |
| May 17, 2026 | 121 | — |
| May 16, 2026 | 128 | — |
| May 15, 2026 | 130 | — |
| Apr 21, 2026 | 245 | — |
| Apr 20, 2026 | 250 | — |
| Apr 19, 2026 | 251 | — |
| Apr 18, 2026 | 250 | — |
| Apr 17, 2026 | 252 | — |
| Apr 16, 2026 | 259 | — |
| Apr 15, 2026 | 250 | — |
| Apr 14, 2026 | 282 | — |
| Apr 13, 2026 | 302 | — |
| Apr 12, 2026 | 318 | — |
| Apr 11, 2026 | 338 | — |
| Apr 10, 2026 | 386 | — |
| Apr 9, 2026 | 419 | — |
| Apr 8, 2026 | 438 | — |
| Apr 7, 2026 | 453 | — |
| Apr 6, 2026 | 464 | — |
Station Information
- USGS Site No
- 01104200
- State
- MA
- County
- Norfolk County
- Coordinates
- 42.3165, -71.2278
- Drainage Area
- 211 mi²
- Datum (ft)
- 67.1
- HUC Code
- 01090001
Recent Extremes
- Max discharge
-
819 cfsMar 17, 2026
- Min discharge
-
2 cfsAug 19, 2025
Computed from the local daily-values archive.
Nearby Gauges
-
Stony Brook Reservoir at Dam Near Waltham, MALow3.3 mi · 0 cfs
-
Stony Brook Reservoir., Unnamed Tributary 1, Near Weston, MANormal3.3 mi · 0 cfs
-
Charles River at Waltham, MANormal3.9 mi · 119 cfs
-
Stony Brook at Rt 20 at Waltham, MANormal4.2 mi · 18 cfs
-
Stony Brook, Unnamed Tributary 1, Near Waltham, MANormal4.4 mi · 0 cfs