Quick Info
Also called: Dillon Reservoir. Size: 3,233 acres, 25 miles of shoreline. Season: June-September for water activities. Marina: Frisco Bay Marina with rentals. Note: Denver's water supply—no motorized private boats.
Lake Dillon dominates the Summit County landscape, a massive reservoir surrounded by mountains with the Gore Range as backdrop. The lake serves as Denver's water supply, which means strict rules but also pristine water. It's the largest body of water in Colorado's high country and a summer destination for sailing, paddleboarding, and kayaking.
Frisco Bay Marina anchors the Frisco side, offering boat rentals, sailing lessons, and a launching point for water adventures. The lake sits at 9,017 feet—high altitude sailing with mountain views in every direction.
Water Activities
Sailing
Lake Dillon is Colorado's premier high-altitude sailing destination. The marina rents sailboats and offers lessons. Afternoon winds make conditions ideal. Sailing regattas run throughout summer.
Paddleboarding & Kayaking
Calm mornings are best for SUP and kayaking before winds pick up. Rentals available at the marina and several shops in town. No experience required—the lake has gentle conditions for beginners.
Pontoon Boats
The marina rents pontoon boats for leisurely cruising. Popular for groups and families wanting to explore the lake without sailing skills. Reserve in advance for summer weekends.
Fishing
The reservoir holds brown trout, rainbow trout, and kokanee salmon. Shore fishing along the recreation path or boat fishing for deeper water. Colorado fishing license required.
Frisco Bay Marina
Location: End of Main Street, downtown Frisco.
Rentals: Sailboats, kayaks, SUPs, pontoon boats, canoes. Hourly and half-day rates. Reservations recommended for weekends.
Lessons: Sailing instruction from beginner to advanced. SUP lessons and guided tours available.
Season: Generally late May through September, weather dependent. Full services June through Labor Day.
Amenities: Dock access, restrooms, picnic areas. The nearby Frisco Bay Cafe offers lakeside dining.
Lake Rules
No motorized private boats. The lake is Denver's water supply. Only the marina operates motorized craft (pontoons, patrol boats).
Inspections required. All watercraft must pass inspection to prevent invasive species. Stop at the inspection station before launching.
Swimming allowed. Yes, but the water is cold—rarely above 60°F even in summer. No designated beaches.
Dogs allowed. Dogs can swim and join you on watercraft. Keep them controlled and clean up waste.
Tips
Go early. Morning has calm water and best conditions for paddling. Afternoon winds benefit sailors but challenge paddleboarders.
Bring layers. Temperature drops on the water even in summer. Wind chill is real at 9,000 feet.
Reserve rentals ahead. Summer weekends book out. Call or reserve online for popular watercraft.
Watch for afternoon storms. Mountain thunderstorms develop quickly. Be off the water by early afternoon if clouds build.
Combine with the rec path. The paved trail along the shore connects to the marina. Bike or walk to your water adventure.
Frequently Asked Questions
Why can't I bring my boat?
Lake Dillon is Denver's drinking water supply. To protect water quality and prevent invasive species, private motorized boats are prohibited.
Is the water cold?
Yes, quite cold. The lake rarely exceeds 60°F even in August. Brief swimming is fine; extended time requires a wetsuit.
Can I bring my own kayak or SUP?
Yes, but it must pass inspection for invasive species at the inspection station. Plan extra time before launching.
What about ice fishing in winter?
Ice fishing is popular when conditions allow. Check ice thickness and conditions—the lake doesn't always freeze solid.
Best time for photos?
Sunrise and sunset offer stunning light on the Gore Range. The marina area provides great mountain backdrops.