Risks to the Glen Canyon Dam

The Glen Canyon Dam, a concrete arch dam on the Colorado River in the U.S. state of Arizona, has had both positive and negative impacts, which have been covered in many literary works. Siltation, degradation of concrete and reinforcements, spillway operational problems, and unstable dam abutments are key factors that may affect the safe operation of the dam.^[2]

• http://en.wikipedia.org/wiki/Risks to the Glen Canyon Dam