The lake bed in 3-D: deep basin, drop-offs and shoreline. Shape estimated, not for navigation. Spot 1 (point drop-off) is open for everyone; the other 6 come with LakeScope PRO. Full screen
Sudbury Reservoir
Worcester County, Massachusetts · 1,290 acres (2 sq mi)
Calm this afternoon.
About Sudbury Reservoir
Sudbury Reservoir is a reservoir in Worcester County, Massachusetts, covering 1,290 acres. Sudbury Dam holds it back on the Stony Brook (Sudbury River). Sudbury Reservoir is a former Boston-area water-supply reservoir now managed mainly for public recreation.
From end to end it runs about 3.4 miles with roughly 19 miles of shoreline. At about 250 ft above sea level, it follows the seasons of the region. It reaches about 65 ft at its deepest. Southborough is right by the lake.
- Size
- 1,290 acres (2 sq mi)
- Deepest
- About 65 ft
- Shoreline
- About 19 miles
- End to end
- About 3.4 miles
- Elevation
- About 250 ft
- Type
- Reservoir
- Dam
- Sudbury Dam, Stony Brook (Sudbury River)
- County
- Worcester County
The lake from above
Best fishing times
Saturday Good
- 6:00 am – 8:15 amsunrise · wind 5 mph
- 3:00 pm – 5:00 pm bestsunset, moon overhead · wind 7 mph
Sunday Good
- 6:00 am – 8:15 amsunrise · wind 10 mph
- 3:45 pm – 5:00 pm bestsunset, moon overhead · wind 10 mph
Based on sun and moon times and the wind forecast. A guide, not a promise. The app shows the whole week.
Fish to expect
Lakes like Sudbury Reservoir in Massachusetts usually hold smallmouth bass, largemouth bass, crappie, bluegill and sunfish and catfish. The state fish and wildlife agency lists what is stocked and the rules for this lake.
- Smallmouth bass
- Largemouth bass
- Crappie
- Bluegill and sunfish
- Catfish
Fishing spots
- 1Point drop-off
The bottom falls away fast off this point; fish rest deep and move up the slope to feed.
- 2
- 3
- 4
- 5
- 6
- 7
6 more spots with LakeScope PRO: fish, depth band, water temperature, best time and bait for each.
Picked from the shape of the lake bed. A guide, not a promise.
Water temperature
No clear reading right now. Narrow or small lakes often have none; the weather and bite times below still apply.
Water level
No daily level reading for this lake.
Ice
No clear view of the ice yet
Ice thickness is an estimate from air temperature, not a measurement. Check the ice yourself before going on it.
Weather and wind
Sunrise 6:34 am · sunset 4:25 pm · waxing crescent moon (lake time).
Towns and places to stay near Sudbury Reservoir
- Southboroughon the shore
- Marlboroughabout 1.4 mi northwest
- Cordavilleabout 1.5 mi south
- Framingham Centerabout 2.9 mi east
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Questions about Sudbury Reservoir
What fish are in Sudbury Reservoir?
Lakes like Sudbury Reservoir usually hold smallmouth bass, largemouth bass, crappie, bluegill and sunfish and catfish. Check the state fish and wildlife agency for stocking and limits.
How deep is Sudbury Reservoir?
About 65 ft at the deepest point. The 3-D view shows where the deep water is.
How big is Sudbury Reservoir?
1,290 acres, with about 19 miles of shoreline.
What town is near Sudbury Reservoir?
Southborough is on the shore; Marlborough is about 1.4 miles northwest.
Is the water warm enough to swim in Sudbury Reservoir?
Check the water temperature on this page before you go: under 70°F feels cold to most swimmers, and under 60°F cold-water shock is a real risk.
Sudbury Reservoir on your phone
The whole week of bite times, lake alerts and the 3-D view, every morning.
