About this river
Charles River is a 9.5 mile river near Lucky 7 Fishing Charters in Massachusetts. Streamflow is measured at the USGS gauge Charles River at Wellesley, MA (site 01104200). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1959 to 2026
Charles River typically runs highest in April, at a median 500 cfs, and lowest in September, at 58 cfs. The highest flow on record for any single day is 2,330 cfs, in 1968.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 298 | 196 to 481 | |
| February | 322 | 216 to 516 | |
| March | 471 | 319 to 722 | |
| April | 500 | 324 to 682 | |
| May | 304 | 199 to 423 | |
| June | 167 | 109 to 257 | |
| July | 83 | 50 to 160 | |
| August | 64 | 31 to 138 | |
| September | 58 | 34 to 103 | |
| October | 89 | 51 to 204 | |
| November | 200 | 123 to 358 | |
| December | 305 | 165 to 489 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 67 years of record. Statistics published by the US Geological Survey for Charles River at Wellesley, MA (site 01104200). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
One mapped launch sits in the mapped area of Charles River. Ramp data comes from the USGS national boat-ramp inventory.
- Charles RiverCharles RiverPublic
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