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

Williams County Lake Quality

Ohio, 4 lakes, measured by Ohio EPA

Williams County has 4 monitored lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. The 4 monitored lakes in Williams County carry whatever clarity, phosphorus, and chlorophyll-a readings Ohio EPA 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.

Loading map…

Where to stay near Williams County

Top-rated places to stay near Williams County

Prices for Oct 16–18, 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 Williams County?

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

All Lakes in Williams County

4 lakes · 0 ranked on readings, 4 without enough sampling0 lakes ranked on readings · 4 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicMax DepthAccess
Lake SenecaWilliamsNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lous PondWilliamsNo recent samplesNo recent samplesNo recent samplesNo recent samples45.7 ft✓ Public
Nettle LakeWilliamsNo recent samplesNo recent samplesNo recent samplesNo recent samples30 ft✓ Public
Browns Recreation LakeWilliamsNo 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.

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 →

Browse every Ohio 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 Ohio Environmental Protection Agency. See data sources.