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Hopkinton State Park Swimming Pool Reservoir Water Details - MA

Hopkinton State Park Swimming Pool Reservoir is a reservoir in Middlesex County, MA. Use this named-water page to check the map, current conditions, and nearby water-quality monitoring; confirm public access, regulations, advisories, and fishability with local sources before fishing.

This named-water page is not a claim that fishing is legal, safe, or productive here. Check public access, local regulations, fish-consumption advisories, and posted closures before fishing.

© OpenStreetMap contributors · open Hopkinton State Park Swimming Pool Reservoir in OpenStreetMap or use coordinates 42.25843, -71.50617.

Current conditions & 3-day forecast

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Weather by Open-Meteo.

Water temperature & water-quality monitoring

Check the official EPA assessment (impaired-waters status and fish-consumption advisories) for Hopkinton State Park Swimming Pool Reservoir at How’s My Waterway (EPA).

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Monitoring summaries from the Water Quality Portal.

State fishing records

American Shad 11 lbs (1986) — Massachusetts Division of Fisheries & Wildlife
Bowfin 9 lbs (2020) — Massachusetts Division of Fisheries & Wildlife
Broodstock Salmon 22 lbs (1997) — Massachusetts Division of Fisheries & Wildlife
Brook Trout 10 lbs (2008) — Massachusetts Division of Fisheries & Wildlife
Brown Trout 19 lbs (1966) — Massachusetts Division of Fisheries & Wildlife
Bullhead 6 lbs (2008) — Massachusetts Division of Fisheries & Wildlife
Carp 46 lbs (2012) — Massachusetts Division of Fisheries & Wildlife
Chain Pickerel 9 lbs (1954) — Massachusetts Division of Fisheries & Wildlife
Channel Catfish 26 lbs (1989) — Massachusetts Division of Fisheries & Wildlife
Crappie 4 lbs (1980) — Massachusetts Division of Fisheries & Wildlife
Fallfish 2 lbs (2024) — Massachusetts Division of Fisheries & Wildlife
Lake Trout 25 lbs (2016) — Massachusetts Division of Fisheries & Wildlife
Landlocked Salmon 10 lbs (1985) — Massachusetts Division of Fisheries & Wildlife
Largemouth Bass 15 lbs (1975) — Massachusetts Division of Fisheries & Wildlife
Northern Pike 35 lbs (1988) — Massachusetts Division of Fisheries & Wildlife
Rainbow Trout 13 lbs (1999) — Massachusetts Division of Fisheries & Wildlife
Smallmouth Bass 8 lbs (1991) — Massachusetts Division of Fisheries & Wildlife
Sunfish 2 lbs (1982) — Massachusetts Division of Fisheries & Wildlife
Tiger Muskellunge 27 lbs (2001) — Massachusetts Division of Fisheries & Wildlife
Tiger Trout 9 lbs (2004) — Massachusetts Division of Fisheries & Wildlife
Walleye 11 lbs (1973) — Massachusetts Division of Fisheries & Wildlife
White Catfish 9 lbs (1987) — Massachusetts Division of Fisheries & Wildlife
White Perch 3 lbs (2016) — Massachusetts Division of Fisheries & Wildlife
White Sucker 3 lbs (2024) — Massachusetts Division of Fisheries & Wildlife
Yellow Perch 2 lbs (1979) — Massachusetts Division of Fisheries & Wildlife
American Shad 25.00 lbs (2017) — Massachusetts Division of Fisheries & Wildlife
Bowfin 32 lbs (2021) — Massachusetts Division of Fisheries & Wildlife
Brook Trout 20.75 lbs (2021) — Massachusetts Division of Fisheries & Wildlife
Brown Trout 32.00 lbs (2020) — Massachusetts Division of Fisheries & Wildlife
Bullhead 23.00 lbs (2026) — Massachusetts Division of Fisheries & Wildlife
Carp 44.00 lbs (2021) — Massachusetts Division of Fisheries & Wildlife
Chain Pickerel 32.50 lbs (2023) — Massachusetts Division of Fisheries & Wildlife
Channel Catfish 34.75 lbs (2023) — Massachusetts Division of Fisheries & Wildlife
Crappie 18.25 lbs (2019) — Massachusetts Division of Fisheries & Wildlife
Fallfish 19 lbs (2024) — Massachusetts Division of Fisheries & Wildlife
Lake Trout 39.00 lbs (2024) — Massachusetts Division of Fisheries & Wildlife
Landlocked Salmon 27.50 lbs (2024) — Massachusetts Division of Fisheries & Wildlife
Largemouth Bass 25.00 lbs (2017) — Massachusetts Division of Fisheries & Wildlife
Northern Pike 45.50 lbs (2017) — Massachusetts Division of Fisheries & Wildlife
Rainbow Trout 27.25 lbs (2021) — Massachusetts Division of Fisheries & Wildlife
Smallmouth Bass 23.5 lbs (2020) — Massachusetts Division of Fisheries & Wildlife
Sunfish 13.00 lbs (2021) — Massachusetts Division of Fisheries & Wildlife
Tiger Muskellunge 34.00 lbs (2021) — Massachusetts Division of Fisheries & Wildlife
Tiger Trout 25.50 lbs (2021) — Massachusetts Division of Fisheries & Wildlife
Walleye 29.50 lbs (2018) — Massachusetts Division of Fisheries & Wildlife
White Catfish 30.00 lbs (2018) — Massachusetts Division of Fisheries & Wildlife
White Perch 18.00 lbs (2018) — Massachusetts Division of Fisheries & Wildlife
White Sucker 23.5 lbs (2025) — Massachusetts Division of Fisheries & Wildlife
Yellow Perch 16.75 lbs (2025) — Massachusetts Division of Fisheries & Wildlife

Official MA state-record fish are published by the Massachusetts Division of Fisheries & Wildlife — records there are the state's, not a MonsterRodHolders list.

Location facts

CountyMiddlesex
Water typereservoir