Lake Del Valle
Lake · California
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
Lake Del Valle is the rare Bay Area reservoir where swimming is actually allowed, with sandy swim beaches on the lake's east shore. The surrounding Del Valle Regional Park offers 4,000-plus acres of oak-dotted hills for hiking before or after a dip. Lifeguards staff the swim areas in summer, a rarity among natural swimming spots.
Good to know
| Water type | Lake |
|---|---|
| Water temperature | 70s in summer |
| Depth | designated swim beach areas |
| Best season | June-September |
| Fees | $6 vehicle entry (plus $2/person weekends) |
| Reservations required | No |
| Hours | 8am-8pm |
| Parking | large lots near the swim beaches |
| Amenities | restrooms, picnic tables, campground, boat launch |
| County | Alameda County |
| Nearest town | Livermore |
| Safety notes | lifeguards on duty in summer at designated beaches; swim only in marked areas |
Map
Nearby swimming holes
Frequently asked questions
Does Lake Del Valle require reservations?
No reservations are required at Lake Del Valle based on current information — but verify before you go.
Is there a fee to visit Lake Del Valle?
Reported fee info: $6 vehicle entry (plus $2/person weekends). Fees can change — confirm with the official link.
When is the best time to visit Lake Del Valle?
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