Natural swimming hole
Greenfield State Park (Otter Lake)
Lake · New Hampshire
About this swimming hole
A sandy beach on Otter Lake surrounded by 255 acres of woods, with lifeguards, rentals, and a campground. The park's trails wind through hemlock forest to quieter coves. It is southern New Hampshire's best state park swim.
Good to know
| Water type | Lake |
|---|---|
| Best season | June-September |
| Fees | $5 day use |
| Reservations required | No |
| Parking | State park lot |
| Amenities | restrooms, picnic tables, lifeguards, campground, boat rentals |
| County | Hillsborough County |
| Nearest town | Greenfield |
| Safety notes | Lifeguards seasonal in designated area |
Map
Official information
Official park / agency page ↗ — check current conditions, fees, and reservations here before you go.
Nearby swimming holes
Frequently asked questions
Can you swim in Greenfield State Park (Otter Lake)?
Yes — Greenfield State Park (Otter Lake) is listed as a natural swimming spot in New Hampshire. Heads-up: Lifeguards seasonal in designated area. There are rarely lifeguards at natural swimming holes — verify conditions locally before you go.
Does Greenfield State Park (Otter Lake) require reservations?
No reservations are required at Greenfield State Park (Otter Lake) based on current information — but verify before you go.
Is there a fee to visit Greenfield State Park (Otter Lake)?
Reported fee info: $5 day use. Fees can change — confirm with the official link.
When is the best time to visit Greenfield State Park (Otter Lake)?
The best season is typically June-September.