"Diablo Lake" Top 5 Page for this destination North Cascades National Park Things to Do Tip by Basaic
North Cascades National Park Things to Do: 45 reviews and 84 photos
East of the dam Diablo Lake is formed by the water held back by the dam. Boating is very popular on Diablo Lake and the scenery is spectacular. The interesting and intense blue-green color of Diablo Lake is formed by something called "rock flour". "Rock flour" is formed by the glaciers in the nearby high country grinding rock against rock to produce a fine silt that meltwater streams carry into the lake below. The "rock flour" then reacts with light to reflect this beautiful color.
Address: 810 State Route 20, Sedro-Woolley, WA 98284
Phone: (360) 854-7200
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