The Grand Canyon River guide, by Buzz and Lorie Belknap, is a waterproof, durable guide to the Colorado River in the Grand Canyon. Waterproof, easy to read quide to the Colorado River in the Grand Canyon. Lees Ferry to Lake Mead. Detailed, easy to read maps. Follow the mile-by-mile description of the Colorado River running through the Grand Canyon. Many different sections covering geology, natural history, archaeology, photo workshop and a short course in how rivers and rapids work.