Hartford Beach State Park
Lake · South Dakota
ℹ️ Community-reported spot. Details below are compiled from public sources and are reported to be accurate — always verify locally before visiting.
About this swimming hole
Hartford Beach State Park's swim beach sits on Big Stone Lake, the 26-mile border lake between South Dakota and Minnesota. The sandy beach and lake views stretch to the Minnesota shore. It is the state's northeastern lake-swim outpost.
Good to know
| Water type | Lake |
|---|---|
| Water temperature | low 70s in summer |
| Depth | shallow beach entry |
| Best season | June-August |
| Fees | State park entrance fee |
| Reservations required | No |
| Parking | state park lots |
| Amenities | swim beach, campground, boat ramps |
| County | Roberts County |
| Nearest town | Milbank |
| Safety notes | no lifeguard |
Map
Nearby swimming holes
Frequently asked questions
Does Hartford Beach State Park require reservations?
No reservations are required at Hartford Beach State Park based on current information — but verify before you go.
Is there a fee to visit Hartford Beach State Park?
Reported fee info: State park entrance fee. Fees can change — confirm with the official link.
When is the best time to visit Hartford Beach State Park?
The best season is typically June-August.
⚠️ Verify before you go. Conditions, fees, reservations, and access can change — confirm details with the official link before visiting. Last verified: September 2026