Late afternoon sun over Slim Lake, scattering a bright path across wind-textured water

Northwest Hills County Lake Quality

Connecticut, 47 lakes, measured by CT DEEP

There are 47 monitored lakes in Northwest Hills County. The mix is varied enough that the county-level average tells you the broad strokes, not the choose-this-cabin specifics. The 47 monitored lakes in Northwest Hills County carry whatever clarity, phosphorus, and chlorophyll-a readings CT DEEP has published, shown as reported.

Most of the county's monitored lakes are shallow, under 50 feet, which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed.

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Where to stay near Northwest Hills County

Top-rated places to stay near Northwest Hills County

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Quick Answers for Northwest Hills County

Cleanest lakes in Northwest Hills County →Best swimming lakes in Connecticut →

Planning a trip? Check special fishing regulations for Barkhamsted Reservoir — or check the official Connecticut fishing regulations.

All Lakes in Northwest Hills County

47 lakes · 0 ranked on readings, 47 without enough sampling0 lakes ranked on readings · 47 without enough sampling, hidden

Include not-rated lakes (47)

Lake	Clarity	Phosphorus	Algae	Trophic	Max Depth	Access
Barkhamsted ReservoirNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Beardsley PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Beeslick PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Benedict PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Bigelow PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	15.1 ft	Not recorded
Bristol Reservoir Number FiveNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Burr PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	10 ft	✓ Public
Colebrook River LakeNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	136.2 ft	✓ Public
Cream Hill LakeNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	43 ft	Not recorded
Dog PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	11 ft	✓ Public
Doolittle LakeNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Fisher PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Fuller PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Gaylord PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Gritman PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Hall Meadow Brook ReservoirNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Hartland PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Hatch PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	14 ft	✓ Public
Hilltop PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Indian LakeNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Lake GardaNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	14.4 ft	Not recorded
Lake HarwintonNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Lake Mc DonoughNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	55 ft	Not recorded
Lake TavolanNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Lake TriangleNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Morris ReservoirNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	83 ft	Not recorded
North PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
North Spectacle PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	33.1 ft	Not recorded
Park PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	16 ft	✓ Public
Peck PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Pitch ReservoirNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Reuben Hart ReservoirNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Riga LakeNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	35.1 ft	Not recorded
Rugg Brook ReservoirNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Shepaug ReservoirNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
South PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
South Spectacle PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	42 ft	Not recorded
Stillwater PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	27 ft	✓ Public
Tyler LakeNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	22 ft	✓ Public
Upper Shepaug ReservoirNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Wangum LakeNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
West Branch ReservoirNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	95 ft	Not recorded
West Side PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	32 ft	✓ Public
Whist PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Wilson PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
Wood Creek PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	7 ft	Not recorded
Wyant PondNorthwest Hills	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded

NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.

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Source: the Connecticut Department of Energy and Environmental Protection. See data sources.