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

Franklin County Lake Quality

Illinois, 13 lakes, measured by Illinois EPA

Franklin County holds 13 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. The 13 monitored lakes in Franklin County carry whatever clarity, phosphorus, and chlorophyll-a readings Illinois 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 Franklin County

Top-rated places to stay near Franklin 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 Franklin County?

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

Quick Answers for Franklin County

Cleanest lakes in Franklin County →Cleanest lakes in Illinois →Best swimming lakes in Illinois →

Planning a trip? Check special fishing regulations for Lake Hamilton — or check the official Illinois fishing regulations.

All Lakes in Franklin County

13 lakes · 0 ranked on readings, 13 without enough sampling0 lakes ranked on readings · 13 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicMax DepthAccess
Lake HamiltonFranklinNo recent samplesNo recent samplesNo recent samplesNo recent samples22 ftNot recorded
Lake BentonFranklinNo recent samplesNo recent samplesNo recent samplesNo recent samples18 ftNot recorded
Valier LakeFranklinNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Sesser LakeFranklinNo recent samplesNo recent samplesNo recent samplesNo recent samples15 ftNot recorded
Cambon LakeFranklinNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Beaver LakeFranklinNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Zeigler ReservoirFranklinNo recent samplesNo recent samplesNo recent samplesNo recent samples20 ftNot recorded
Hilyn LakeFranklinNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Christopher LakeFranklinNo recent samplesNo recent samplesNo recent samplesNo recent samples23 ftNot recorded
Lake MosesFranklinNo recent samplesNo recent samplesNo recent samplesNo recent samples21 ftNot recorded
New City LakeFranklinNo recent samplesNo recent samplesNo recent samplesNo recent samples15 ftNot recorded
West Frankfort ReservoirFranklinNo recent samplesNo recent samplesNo recent samplesNo recent samples20 ftNot recorded
Thompsonville LakeFranklinNo 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 →

Other Counties in Illinois

Winnebago County

7 lakes

DeKalb County

1 lake

Kane County

3 lakes

Perry County

7 lakes

Rock Island County

3 lakes

Jackson County

14 lakes

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