Harmon Lake
Winnebago County, Iowa41 acresView mapDirections
No nutrient or algae sampling on record from Iowa DNR for this lake.
Harmon Lake in Winnebago County, Iowa has water-quality measurements published by Iowa DNR, shown here as reported. Surface area: 41 acres.
Harmon Lake is a 41-acre lake in Winnebago County, Iowa.
Source: EPA Water Quality Portal sampling records, Iowa DNR. Methodology: how these readings are compared.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Harmon Lake is safe to swim in today is a call for the Iowa Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Harmon Lake
These are the measurements Iowa DNR publishes for Harmon Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. TSI undefined.
Ask about Harmon Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
41 acres
Shoreline
1 mi
No bathymetric survey has been published for Harmon Lake, so its depth is not documented here.
Stays via Stay22
Stays near Harmon Lake
Compare lakeside cabins, hotels, and vacation rentals near Harmon Lake in Winnebago County, Iowa — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Harmon Lake
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 whole trip? See where to stay at Iowa’s top lakes →
Follow Harmon Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Harmon Lake
Nearby Lakes in Winnebago County
Frequently asked questions about Harmon Lake
Where is Harmon Lake?
- Harmon Lake is a lake in Winnebago County, Iowa. Its water-quality measurements are published by Iowa DNR and shown on this page as reported.
What is the water quality of Harmon Lake?
- Harmon Lake in Winnebago County, Iowa has water-quality measurements published by Iowa DNR, shown here as reported. Surface area: 41 acres.
Is Harmon Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Harmon Lake across LakeQuality
More lakes in Iowa
Other Lakes in Iowa
Where this data comes from
Measurements for Harmon Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.