Paddling in North Cascades National Park

The North Cascades hold a particular kind of paddling water: deep glacially fed lakes, a pair of moving rivers, and reservoirs backed up behind dams that power much of Seattle.

The park complex — North Cascades National Park, Ross Lake National Recreation Area, and Lake Chelan National Recreation Area — sits along the North Cascades Highway corridor and stretches south to Lake Chelan, with water temperatures that rarely climb above 50°F even in summer.

That cold is the baseline fact every paddler here works around. Ross Lake is the anchor of multi-day paddling in the complex. The reservoir runs 23 miles and holds 19 boat-accessible campsites reachable only by water or trail.

Getting there requires commitment: Ross Lake is not accessible by car from State Route 20, and boats must be portaged 1. 2 miles over a gravel road between Diablo and Ross lakes, with 525 feet of elevation gain and 100 feet of loss.

Ross Lake Resort offers a portage service and rents motorboats, canoes, kayaks, and paddleboards on the lake. Three to five days — paddling, camping, and hiking out from shore — is a natural rhythm here.

Diablo Lake sits below Ross and is the more accessible entry point. The launch at Colonial Creek Campground puts paddlers on turquoise water colored by glacial flour, with the closest boat-in campsite about 2 miles out.

Three campsite locations with seven total sites ring the lake. Afternoon winds build regularly and can come up fast — an early start matters. Gorge Lake completes the trio of Skagit Project reservoirs; no boat rentals are available on Diablo or Gorge.

The Skagit River runs Class II–III for roughly 9 miles between the boat launch near Goodell Creek Campground at milepost 119 and the Copper Creek take-out near milepost 112. Snowmelt drives the season, with summer the reliable window.

The stretch has few options for portaging around rapids, so paddlers should be honest about their skills before committing.

The Stehekin River, in the Lake Chelan unit to the south, is accessible from Harlequin Campground but carries serious logjam hazards — the NPS recommends experienced boaters only, or a guide. A few rules shape every trip.

Personal watercraft are prohibited throughout the complex. Motorboats on Ross, Diablo, and Gorge lakes must run four-stroke or direct-injection two-stroke engines meeting 2006 EPA standards.

Boat-in camping on Ross and Diablo requires a backcountry permit; boat-in camping on Lake Chelan requires a federal dock permit. Both are issued through the park — check current availability before you plan around a specific site.

The wilderness designation covering 94% of the complex isn't background detail. It's why the lakes feel the way they do, and why the permit system exists. Plan accordingly, and the water here will hold up its end.