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
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.
⚠️ Verify before you go. Conditions, fees, reservations, and access can change — confirm details with the official link before visiting. Last verified: September 2026