Twin Lakes (Mammoth Lakes)
- Type
- Two alpine lakes
- Size
- About 108 acres
- Elevation
- About 8,600 ft
- Motors
- Electric motors only
.jpg?width=1280 "Photo: Don Graham from Redlands, CA, USA, CC BY-SA 2.0, via Wikimedia Commons")
_03.JPG?width=1280 "Photo: Nandaro, CC BY-SA 3.0, via Wikimedia Commons")
- Kayak & SUP
- Fishing
- Boat rentals
- Camping
- Restrooms
About this lake
Twin Lakes sit in the Mammoth Lakes Basin above the town of Mammoth Lakes, at about 8,600 feet in the Inyo National Forest, with Mammoth Mountain above and a waterfall running into one of the lakes.
On the water
The two lakes cover about 108 acres and are calm enough for canoes and kayaks. Power boats must use electric motors. Boats can be rented at the general store, a short walk from the campsites. Trout fishing (rainbow, brook and brown) is popular.
Camping
Twin Lakes Campground, reserved through Recreation.gov, has tent and RV sites in three sections, two of them on the west shore. It has flush toilets and drinking water. Snow usually keeps it closed until late May or early June.
Mussel rule
Trailered boats need the free Eastern Sierra mussel inspection and sticker before launching.
Getting there & access
Getting there
From Mammoth Lakes take Highway 203 west onto Lake Mary Road, then Twin Lakes Road to the campground.
Season
Snow usually keeps the campground closed until late May or early June.
Mussel inspection
Since April 2026, Mono County requires every trailered boat and jet ski to be inspected before launching. Inspections, decontamination and the Eastern Sierra mussel sticker are free at Eastern Sierra WID stations (Bridgeport and Bishop among them). Residents inspect once a year; visitors inspect on entering Mono or Inyo County, and again after launching anywhere outside the two counties. Arrive clean, drained and dry.
- Rentals
- General store at the campground
- Season
- Usually late May or June to fall
- Welcome Center
- (760) 924-5500
What's here
Boat rentals
Boat rentals at the general store
Kayaking
Calm water for canoes and kayaks
Fishing
Rainbow, brook and brown trout
Camping
Twin Lakes Campground (Recreation.gov)
Restrooms
Flush toilets and drinking water at the campground
Rules & official resources
- California Boater Card required for all operators of motorized vessels, regardless of age, since January 1, 2025dbw.parks.ca.gov ↗
- Power boats must have electric motorsrecreation.gov ↗
- Trailered boats and jet skis must be inspected at a free Eastern Sierra WID station and carry the Eastern Sierra mussel sticker before launching; launching uninspected can bring fines, misdemeanor charges or impoundmentftp.monocounty.ca.gov ↗
- Kayaks, canoes, paddleboards and other small non-motorized craft must be cleaned, drained, dried and self-inspected before launching somewhere newmonocounty.org ↗
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