Trillium Lake
Lake · Oregon
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
Trillium Lake is the Mount Hood classic — a small alpine lake with swimming, kayaking, and the mountain reflected in still water. The accessible trail around the lake is lovely. Summer weekends are busy, but the scenery never disappoints.
Good to know
| Water type | Lake |
|---|---|
| Water temperature | 60s in summer |
| Depth | alpine lake with swim areas |
| Best season | July-September |
| Fees | $5-10 day use |
| Reservations required | No |
| Parking | day-use lot; fills early |
| Amenities | restrooms, campground, boat launch |
| County | Clackamas County |
| Nearest town | Government Camp |
| Safety notes | no lifeguard; cold mountain water |
Map
Nearby swimming holes
Frequently asked questions
Does Trillium Lake require reservations?
No reservations are required at Trillium Lake based on current information — but verify before you go.
Is there a fee to visit Trillium Lake?
Reported fee info: $5-10 day use. Fees can change — confirm with the official link.
When is the best time to visit Trillium Lake?
The best season is typically July-September.
⚠️ Verify before you go. Conditions, fees, reservations, and access can change — confirm details with the official link before visiting. Last verified: September 2026