Natural swimming hole
Lake Alpine
Lake · California
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 popular Highway 4 lake with a developed swim beach, amphitheater programs, and a lakeside trail. One of the most accessible alpine swims in the Stanislaus National Forest. Summer weekends are lively; weekdays bring quiet.
Good to know
| Water type | Lake |
|---|---|
| Water temperature | 65-70 in summer |
| Depth | Developed swim beach |
| Best season | July-September |
| Fees | Day-use fee |
| Reservations required | No |
| Parking | Day-use lots off Highway 4 |
| County | Alpine County |
| Nearest town | Arnold |
| Safety notes | No lifeguards |
Map
Nearby swimming holes
Frequently asked questions
Can you swim in Lake Alpine?
Yes — Lake Alpine is listed as a natural swimming spot in California. Reported water temperature: 65-70 in summer. Heads-up: No lifeguards. There are rarely lifeguards at natural swimming holes — verify conditions locally before you go.
Does Lake Alpine require reservations?
No reservations are required at Lake Alpine based on current information — but verify before you go.
Is there a fee to visit Lake Alpine?
Reported fee info: Day-use fee. Fees can change — confirm with the official link.
When is the best time to visit Lake Alpine?
The best season is typically July-September.