Natural swimming hole
Green Mountain Reservoir
Lake · Colorado
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
A large Dillon-area reservoir with shoreline swimming, boating, and Tenmile Range views. Green Mountain's water is cold but the scenery is superb. Less regulated than Dillon Reservoir, which bans body contact.
Good to know
| Water type | Lake |
|---|---|
| Water temperature | cold |
| Depth | swim near shore |
| Best season | June-September |
| Fees | Free |
| Reservations required | No |
| Hours | sunrise-sunset |
| Parking | Day-use lots |
| Amenities | restrooms, picnic tables |
| County | Summit County |
| Nearest town | Silverthorne |
| Safety notes | No lifeguard; cold |
Map
Nearby swimming holes
Frequently asked questions
Can you swim in Green Mountain Reservoir?
Yes — Green Mountain Reservoir is listed as a natural swimming spot in Colorado. Reported water temperature: cold. Heads-up: No lifeguard; cold. There are rarely lifeguards at natural swimming holes — verify conditions locally before you go.
Does Green Mountain Reservoir require reservations?
No reservations are required at Green Mountain Reservoir based on current information — but verify before you go.
Is there a fee to visit Green Mountain Reservoir?
Reported fee info: Free. Fees can change — confirm with the official link.
When is the best time to visit Green Mountain Reservoir?
The best season is typically June-September.