Despite declining water levels, Kris Verville still finds enough water to kick up with his jet ski at Lake Mead on Oct. 6, 2004. Lake Mead is currently over half full, and its water level dropped approximately 80 feet between 1999 and 2006. View photo »

A bird rests in Las Vegas Bay on Lake Mead at sunset Friday afternoon, April 21, 2006. If current drought conditions and water usage trends continue, scientists predict there is a 50 percent chance Lake Mead will run dry by 2021 and a 10 percent chance it will run out of usable water by 2014. View photo »

Discoloration around the banks of lake mead shows how much the water level has declined over the years. Lake Mead is currently over half full, its water supply has been depleted due to an ongoing drought and the demands put on it by the growing community in southern Nevada. View photo »