From KMTV.com:

The U.S. Bureau of Reclamation issued new projections Wednesday saying the reservoir behind Hoover Dam should swell by almost 12.5 million acre-feet by October. That’s up 1 million acre-feet from projections a month ago for Las Vegas’ main source of drinking water.

Click through to the article for their photo of Lake Mead.

More Colorado River basin coverage here.