Lake trip · Union County, Iowa
Where to stay at Three Mile Lake
Three Mile Lake covers 880 acres in Union County and carries a water-quality grade of D (Poor). Compare cabins, resorts, and vacation rentals below, then check the water before you book. Late spring through early fall, with June through August the peak season for swimming, boating, and fishing.
Places to stay near Three Mile Lake
Cabins, resorts, hotels, and vacation rentals near Three Mile Lake in Union County, Iowa — live availability and prices. Add your dates to see totals.
Top-rated places to stay near Three Mile Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Before you book: the water
Three Mile Lake grades D for water quality — Poor. Swimming not recommended, poor water quality with high algae risk. Water clarity is about 2.7 ft of visibility. Algae (chlorophyll-a) measures 28.4 µg/L.
Best time to visit
Late spring through early fall, with June through August the peak season for swimming, boating, and fishing.
Check the National Weather Service forecast for Three Mile Lake →
About Three Mile Lake
Camping & RV near Three Mile Lake
Search public campgrounds and RV sites near Three Mile Lake on Recreation.gov, then compare cabins, resorts, and rentals on the map above.
Common questions
Frequently Asked Questions
Cabins, resorts, and vacation rentals around Three Mile Lake in Union County, Iowa are on the map above with live availability and nightly prices. Waterfront rentals put you on the dock; lodging in the nearest town is usually cheaper with more choice.
Three Mile Lake has a LakeQuality water-quality grade of D (Poor). Swimming not recommended, poor water quality with high algae risk. Always check local health-department advisories before swimming.
Late spring through early fall, with June through August the peak season for swimming, boating, and fishing.
LakeQuality Lake Trip Planner (2026)
Free trip-planning guide for Three Mile Lake: how to pick a clean lake, the water-quality signals that matter, best swimming and fishing windows, and where to stay.
Lodging availability and prices are provided by Stay22 and its booking partners (Booking.com, Vrbo, Expedia); LakeQuality may earn a commission from bookings at no extra cost to you. Water-quality grades are independent of lodging listings. Always check current health-department advisories and managing-agency conditions before you travel.