The Colorado River flows though Marble Canyon downstream from Glen Canyon Dam and Lake Powell. The five-year-old Western drought continues as of September 26, 2004. Colorado River streamflow records indicate that this is the worst drought in more than 100 years. The seven states sharing the Colorado River are considering a plan to protect the 186-mile-long Lake Powell by cutting the amount of water released downstream to Lake Mead, the primary water supply for Las Vegas, Nevada. Officials fear that the levels will fall too low to turn the electric turbines that produce electricity.