Stock photography, photos: Diablo Dam - Washington , USA Stock photos of The Diablo Dam on the Skagit River in the Cascades is owned and operated by Seattle City Light. Diablo Lake, covering 910 acres, gets its emerald-green color from fine sediments in the glacial runoff. Washington - USA Photograph: © Robert Burch Click for a larger image and more information Keywords associated with this stock photo: energy, power, electric, electricity, hydroelectric, Diablo dam, dam, Washington, usa, Diablo lake, skagit river, skagit