Onapa Lake
McIntosh County, Oklahoma68 acresView mapDirections
No nutrient or algae sampling on record from Oklahoma DEQ for this lake.
Onapa Lake in McIntosh County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Surface area: 68 acres.
Onapa Lake is a 68-acre lake in McIntosh County, Oklahoma.
Source: EPA Water Quality Portal sampling records, ODEQ. 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 Onapa Lake is safe to swim in today is a call for the Oklahoma Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Onapa Lake
These are the measurements Oklahoma DEQ publishes for Onapa 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 Onapa Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
68 acres
Shoreline
3.7 mi
No bathymetric survey has been published for Onapa Lake, so its depth is not documented here.
Stays via Stay22
Stays near Onapa Lake
Compare lakeside cabins, hotels, and vacation rentals near Onapa Lake in McIntosh County, Oklahoma — 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 Onapa 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 Oklahoma’s top lakes →
Follow Onapa Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Onapa Lake
Nearby Lakes in McIntosh County
Frequently asked questions about Onapa Lake
Where is Onapa Lake?
- Onapa Lake is a lake in McIntosh County, Oklahoma. Its water-quality measurements are published by Oklahoma DEQ and shown on this page as reported.
What is the water quality of Onapa Lake?
- Onapa Lake in McIntosh County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Surface area: 68 acres.
Is Onapa Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Onapa Lake across LakeQuality
More lakes in Oklahoma
Other Lakes in Oklahoma
Where this data comes from
Measurements for Onapa Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.