Natural swimming hole
Square Lake County Park
Lake · Minnesota
About this swimming hole
Square Lake is one of the clearest lakes in the Twin Cities region, a spring-fed 203-acre lake in May Township whose county-park beach draws swimmers and scuba classes alike. The sandy beach, roped swim area, and lifeguards make it a metro favorite on hot days. Cold, clean water keeps it refreshing even in August.
Good to know
| Water type | Lake |
|---|---|
| Depth | 68 ft max depth (lake); roped swimming area |
| Best season | June-August |
| Fees | County vehicle permit required ($7 daily) |
| Reservations required | No |
| Parking | park lots at 15450 Square Lake Trail N; pay station |
| Amenities | lifeguards, swimming beach, changing building, restrooms, picnic tables and grills, scuba diving entry, boat launch |
| County | Washington County |
| Nearest town | Stillwater |
| Safety notes | cold spring-fed water |
Map
Nearby swimming holes
Frequently asked questions
Can you swim in Square Lake County Park?
Yes — Square Lake County Park is listed as a natural swimming spot in Minnesota. Heads-up: cold spring-fed water. There are rarely lifeguards at natural swimming holes — verify conditions locally before you go.
Does Square Lake County Park require reservations?
No reservations are required at Square Lake County Park based on current information — but verify before you go.
Is there a fee to visit Square Lake County Park?
Reported fee info: County vehicle permit required ($7 daily). Fees can change — confirm with the official link.
When is the best time to visit Square Lake County Park?
The best season is typically June-August.