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

Washington County Lake Quality

Rhode Island, 41 lakes, measured by RIDEM

There are 41 monitored lakes in Washington County. The mix is varied enough that the county-level average tells you the broad strokes, not the choose-this-cabin specifics. The 41 monitored lakes in Washington County carry whatever clarity, phosphorus, and chlorophyll-a readings RIDEM 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 Washington County

Top-rated places to stay near Washington County

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

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Quick Answers for Washington County

Cleanest lakes in Washington County →Best swimming lakes in Rhode Island →

Planning a trip? Check special fishing regulations for Alton Pond — or check the official Rhode Island fishing regulations.

All Lakes in Washington County

41 lakes · 0 ranked on readings, 41 without enough sampling0 lakes ranked on readings · 41 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicMax DepthAccess
Alton PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples13.8 ftNot recorded
Asa PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples6.7 ftNot recorded
Ashville PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples13.1 ftNot recorded
Barber PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples24.9 ft✓ Public
Beach PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Belleville PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples8.2 ft✓ Public
Blue PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Boone LakeWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples22.3 ftNot recorded
Browning Mill PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples7.5 ftNot recorded
Card PondsWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Carr PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples19 ftNot recorded
Chapman PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples4.6 ft✓ Public
Factory PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Frying Pan PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Glen Rock ReservoirWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples9.2 ftNot recorded
Green Hill PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Hundred Acre PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples38.1 ftNot recorded
Indian LakeWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples8.9 ft✓ Public
James PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Larkin PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples39.4 ftNot recorded
Locustville PondWashington4.9 ftNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Long PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples26.9 ftNot recorded
Maschaug PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Metcalf Wildlife MarshWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Pasquiset PondWashington3.6 ftNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Sachem PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Saugatucket PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples9.8 ftNot recorded
School House PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples27.9 ftNot recorded
Secret LakeWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples11.2 ftNot recorded
Silver LakeWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples59.1 ftNot recorded
Trustom PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Tucker PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples32.2 ft✓ Public
Watchaug PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples36.1 ft✓ Public
Wesquage PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples4.9 ftNot recorded
White PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples44.6 ftNot recorded
Wincheck PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples23 ftNot recorded
Winnapaug PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Worden PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples6.2 ft✓ Public
Wyoming PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samples11.8 ft✓ Public
Yawgoo PondWashington14.4 ftNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Yawgoog PondWashingtonNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot 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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Other Counties in Rhode Island

Newport County

20 lakes

Providence County

50 lakes

Kent County

21 lakes

Bristol County

2 lakes

Browse every Rhode Island 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 Rhode Island Department of Environmental Management. See data sources.