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

Carroll County Lake Quality

New Hampshire, 64 lakes, measured by NHDES

Carroll County has 64 monitored lakes, enough that within-county variation matters as much as the county average. Some are deep glacial basins, others are shallow agricultural-watershed waters, and the measurements reflect that mix. 17 of those lakes carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. Most monitored lakes in Carroll County carry favourable nutrient and algae readings for New Hampshire.

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. Berry Bay-Deep Spot Lake has the lowest nutrient and algae readings in the county.

Loading map…

Where to stay near Carroll County

Top-rated places to stay near Carroll County

Prices for Oct 9–11, 4 adults. Change dates on the map below.

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

Planning a trip to Carroll County?

Get lake water-quality updates plus the best cabin & lodging deals near Carroll County — straight to your inbox. No spam, unsubscribe anytime.

Quick Answers for Carroll County

Cleanest lakes in Carroll County →Best swimming lakes in New Hampshire →

Planning a trip? Check special fishing regulations for Berry Bay-Deep Spot Lake — or check the official New Hampshire fishing regulations.

All Lakes in Carroll County

64 lakes · 17 ranked on readings, 47 without enough sampling17 lakes ranked on readings · 47 without enough sampling, hidden

Include not-rated lakes (47)

#	Lake	Clarity	Phosphorus	Algae	Trophic	Max Depth	Access
1	Berry Bay-Deep Spot LakeCarroll	No recent samples	8.8 µg/L	2.1 µg/L	No recent samples	No recent samples	✓ Public
2	Big Pea Porridge Pond-Deep SpotCarroll	No recent samples	6.9 µg/L	2.4 µg/L	No recent samples	No recent samples	✓ Public
3	Broad Bay-Deep Spot LakeCarroll	No recent samples	6.8 µg/L	2.2 µg/L	No recent samples	No recent samples	Not recorded
4	Leavitt Bay-Deep Spot LakeCarroll	No recent samples	8.8 µg/L	2.3 µg/L	No recent samples	No recent samples	Not recorded
5	Lower Beech Pond-Deep SpotCarroll	No recent samples	10.1 µg/L	1.2 µg/L	No recent samples	No recent samples	Not recorded
6	Lower Danforth Pond-Deep SpotCarroll	No recent samples	12.5 µg/L	3.6 µg/L	No recent samples	No recent samples	Not recorded
7	Middle Pea Porridge Pond-Deep SpotCarroll	No recent samples	9.1 µg/L	1.6 µg/L	No recent samples	No recent samples	Not recorded
8	Ossipee Lake-Deep SpotCarroll	No recent samples	7 µg/L	2 µg/L	No recent samples	No recent samples	✓ Public
9	Duncan Lake-Deep SpotCarroll	No recent samples	12 µg/L	No recent samples	No recent samples	No recent samples	✓ Public
10	Intervale Pond-Deep SpotCarroll	No recent samples	9.9 µg/L	No recent samples	No recent samples	No recent samples	Not recorded
11	Kusumpe Pond-Deep SpotCarroll	No recent samples	9.9 µg/L	No recent samples	No recent samples	No recent samples	Not recorded
12	Moores Pond-Deep SpotCarroll	No recent samples	6.6 µg/L	3.9 µg/L	No recent samples	No recent samples	✓ Public
13	White Lake-Deep SpotCarroll	No recent samples	8.5 µg/L	No recent samples	No recent samples	No recent samples	Not recorded
14	Balch Pond-Deep SpotCarroll	No recent samples	22.3 µg/L	No recent samples	No recent samples	No recent samples	✓ Public
15	Bearcamp Pond-Deep SpotCarroll	No recent samples	11.9 µg/L	5 µg/L	No recent samples	No recent samples	Not recorded
16	Garland Pond-Deep SpotCarroll	No recent samples	17.9 µg/L	7.3 µg/L	No recent samples	No recent samples	Not recorded
17	Lees Pond-Deep SpotCarroll	No recent samples	15.1 µg/L	5.5 µg/L	No recent samples	No recent samples	✓ Public
	Barville PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	15 ft	Not recorded
	Basin Brook ReservoirCarroll	No recent samples	No recent samples	No recent samples	No recent samples	15 ft	✓ Public
	Belleau LakeCarroll	No recent samples	No recent samples	No recent samples	No recent samples	19 ft	Not recorded
	Berry PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	15.1 ft	Not recorded
	Chocorua LakeCarroll	No recent samples	No recent samples	No recent samples	No recent samples	25 ft	Not recorded
	Conner PondCarroll	41 ft	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Conway LakeCarroll	No recent samples	No recent samples	No recent samples	No recent samples	45 ft	Not recorded
	Cooks PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	20 ft	Not recorded
	Copps PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	5 ft	Not recorded
	Crescent LakeCarroll	No recent samples	No recent samples	No recent samples	No recent samples	20 ft	✓ Public
	Dan Hole PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	130 ft	Not recorded
	Dinsmore PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	25 ft	Not recorded
	Duck PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	10 ft	Not recorded
	Durgin PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	19 ft	Not recorded
	Front BayCarroll	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	✓ Public
	Garland PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	10 ft	Not recorded
	Great Hill PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	9.8 ft	Not recorded
	Horn PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	30 ft	✓ Public
	Iona LakeCarroll	No recent samples	No recent samples	No recent samples	No recent samples	30 ft	Not recorded
	Kingswood LakeCarroll	No recent samples	No recent samples	No recent samples	No recent samples	30 ft	Not recorded
	Labrador PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	21 ft	Not recorded
	Lake IvanhoeCarroll	No recent samples	No recent samples	No recent samples	No recent samples	20 ft	✓ Public
	Lake KanasatkaCarroll	No recent samples	No recent samples	No recent samples	No recent samples	45 ft	✓ Public
	Lake WentworthCarroll	No recent samples	No recent samples	No recent samples	No recent samples	80 ft	Not recorded
	Little Dan Hole PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	20 ft	Not recorded
	Little Lake-Deep SpotCarroll	No recent samples	5.5 µg/L	No recent samples	No recent samples	No recent samples	Not recorded
	Little Pond-Deep SpotCarroll	No recent samples	21.2 µg/L	No recent samples	No recent samples	No recent samples	Not recorded
	Loon LakeCarroll	No recent samples	No recent samples	No recent samples	No recent samples	50 ft	Not recorded
	Lovell LakeCarroll	No recent samples	No recent samples	No recent samples	No recent samples	30 ft	✓ Public
	Mirror LakeCarroll	No recent samples	No recent samples	No recent samples	No recent samples	40 ft	✓ Public
	Moody PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	11.8 ft	Not recorded
	Moores Pond-InletCarroll	No recent samples	9.2 µg/L	No recent samples	No recent samples	No recent samples	Not recorded
	Mountain PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	10 ft	Not recorded
	Pequawket PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	50 ft	Not recorded
	Pine River PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	55 ft	Not recorded
	Province LakeCarroll	No recent samples	No recent samples	No recent samples	No recent samples	15 ft	✓ Public
	Red Hill PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	20 ft	Not recorded
	Rust PondCarroll	18 ft	No recent samples	No recent samples	No recent samples	No recent samples	✓ Public
	Sargents PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	15 ft	Not recorded
	Silver LakeCarroll	No recent samples	No recent samples	No recent samples	No recent samples	164 ft	Not recorded
	The BasinCarroll	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Union MeadowsCarroll	No recent samples	No recent samples	No recent samples	No recent samples	15 ft	Not recorded
	Upper Beech PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	30 ft	Not recorded
	Upper Kimball PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	20 ft	Not recorded
	Wakondah PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	30 ft	Not recorded
	White PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	35 ft	✓ Public
	Whitton PondCarroll	No recent samples	No recent samples	No recent samples	No recent samples	40 ft	Not recorded

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

Lake Match

Which lake suits how you actually use one?

Six questions — swimming, fishing, quiet, cabins, drive time — and a shortlist of lakes that fit, with the water quality behind each one.

Take the quiz →

Other Counties in New Hampshire

39 lakes

70 lakes

39 lakes

51 lakes

82 lakes

90 lakes

Browse every New Hampshire lake, or the full directory of lakes across all United States (49 states), Canada (Ontario, Québec, Nova Scotia, British Columbia and Newfoundland and Labrador), and 38 other country hubs..

Source: the New Hampshire Department of Environmental Services. See data sources.