Around here
Around Sudbury River
- Assabet River National Wildlife RefugeRecreation area8.9 mi (opens in a new tab)
- John H. Chafee Blackstone River Valley National Heritage CorridorRecreation area12.5 mi (opens in a new tab)
- The Wayside: Home of AuthorsVisitor center14 mi (opens in a new tab)
- West Hill DamRecreation area14.2 mi (opens in a new tab)
Data Source: Recreation.gov · Source: USGS GNIS · Source: National Park Service. No claim to original U.S. Government works. · Public land: USGS PAD-US
About this river
Sudbury River is a 32.7 mile river near Charles River Canoe & Kayak in Massachusetts. Streamflow is measured at the USGS gauge Sudbury River at Ashland, MA (site 01097480). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1994 to 2010
Sudbury River typically runs highest in March, at a median 91 cfs, and lowest in September, at 8.8 cfs. The highest flow on record for any single day is 616 cfs, in 2007.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 91 | 55 to 121 |
| February | 69 | 35 to 149 |
| March | 91 | 72 to 168 |
| April | 88 | 53 to 156 |
| May | 44 | 33 to 77 |
| June | 21 | 13 to 42 |
| July | 9.1 | 7.3 to 78 |
| August | 13 | 4.8 to 50 |
| September | 8.8 | 3.9 to 43 |
| October | 20 | 7.2 to 44 |
| November | 38 | 17 to 68 |
| December | 76 | 31 to 149 |
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 5 years of record. Statistics published by the US Geological Survey for Sudbury River at Ashland, MA (site 01097480). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
3 mapped launches sit in the mapped area of Sudbury River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Hopkinton ReservoirIndian Brook - Hopkinton ReservoirPublic
- Lake CochituateLake CochituatePublic
- Delaney Pond (Wildlife Management Area)Delaney PondPublic
Made to print
Put Sudbury River on your wall
This river section as an art print, drawn over the real terrain with its miles, plus the trails, roads and peaks around it. Pick the colors and the size, and see the finished print before you buy. From $39, shipping included.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Sudbury River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
See every free widget you can put on your site, including live conditions and a 7 day forecast.
