Lake Powell is the second largest man-made reservoir in the US. The Glen Canyon Dam was made on the Colorado river at Page, Arizona resulting in this huge lake. It is on the border between Utah and Arizona. Glen Canyon National Recreation Area and Lake Powell have breathtaking landscape. The lake is more than 400 feet deep, 150 miles long and has nearly 2,000 miles of shoreline. Sparkling, clear, blue water laps against towering, sheer, spectacular red-rock canyon walls and sandy beaches. There are 96 major canyons to explore, though you will need a water craft for the majority of them since access is limited because there are few roads. Power boats and wave runners zip about while houseboats slowly wend their way deep into side canyons. Boats can be rented in Page and at each of four marinas. I recommend a party of min 6 person for a houseboat rental and the shortest rental period is 3 days. Lake Powell Map