Lewiston Lake (Ackerman)
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
Lewiston Lake is a small, calm reservoir on the Trinity River known for its swim beach at Ackerman Campground. No-wake rules keep the water glassy and safe for swimmers. The lakeside setting under the Trinity Alps is peaceful and family-friendly.
Good to know
| Water type | Lake |
|---|---|
| Water temperature | 60s-70s in summer |
| Depth | swim beach at Ackerman |
| Best season | June-September |
| Fees | Free |
| Reservations required | No |
| Parking | campground and day-use lots |
| Amenities | restrooms, picnic tables, campground, boat launch |
| County | Trinity County |
| Nearest town | Lewiston |
| Safety notes | no lifeguard; no-wake lake — safer for swimmers |
Map
Nearby swimming holes
Frequently asked questions
Does Lewiston Lake (Ackerman) require reservations?
No reservations are required at Lewiston Lake (Ackerman) based on current information — but verify before you go.
Is there a fee to visit Lewiston Lake (Ackerman)?
Reported fee info: Free. Fees can change — confirm with the official link.
When is the best time to visit Lewiston Lake (Ackerman)?
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