Ross Dam

Overview

Ross Dam is a dramatic Skagit River hydroelectric dam with big payoffs for a relatively short effort. From the top, you get sweeping views of blue-green Ross Lake and jagged North Cascades peaks. The dam is a substantial structure—about 540 feet tall and roughly 1,300 feet long—so the scale and scenery both impress. Expect it to be windy on the crest, which only adds to the sense of exposure and grandeur.

The Hike In

The Ross Dam Trail runs about 1.4–1.6 miles round-trip, dropping roughly 360–500 feet from Highway 20 to the dam. It’s an easy descent on the way down, but the return is a steady uphill that will get your heart rate up. The path is mostly straightforward with a few looser, gravelly sections—watch your footing. You’ll pass a small waterfall and get teasing lake views before reaching the dam.

What You’ll See

From the dam, look out over the long, fjord-like sweep of Ross Lake and the serrated skyline beyond. You can usually walk the span end to end for different angles. Look across to spot the floating Ross Lake Resort tucked along the shore. On clear days the color of the water is striking—great for photos when the light hits it right.

Getting There

The trailhead sits off Highway 20 between mileposts 134 and 135. This is the main foot access to the dam and a common route used to reach Ross Lake Resort by trail. Parking is limited and popular on summer weekends—arrive early or come later in the day to avoid circling.

Logistics and Amenities

Don’t count on amenities here. Restroom availability at small pullouts along Highway 20 is inconsistent and often seasonal; plan bathroom stops at larger hubs before you arrive. There’s no reliable potable water at the trailhead—bring what you need. Dogs are allowed on leash on this trail within the Ross Lake National Recreation Area, but rules are much stricter in most of the surrounding park complex.

Best Time to Visit

June through August offer the most reliable trail conditions and the best shot at those vivid lake colors. Shoulder seasons can be lovely but variable. In winter, Highway 20 often closes near the Ross Dam parking area for months; when it’s closed, services are essentially nonexistent. For fewer people and easier parking, aim for early mornings on weekdays.

Tips for a Smooth Visit

• It’s frequently breezy on the dam—secure hats and loose items.
• Bring extra water; the uphill return is short but stout.
• If the lot is full, don’t improvise parking—continue to another pullout and circle back.
• Check current road and trail conditions in spring and fall when snow and blowdowns are possible.
• Treat this corridor gently—pack out all trash and stick to established paths.