Eleven of the past 14 years have been droughts for Hoover Dam 's reservoir . Reservoir at Arizona-Utah border is 45 per cent below 'full pool ' capacity . Lake will drop even further as it gives water to Lake Powell Lake Mead .
Eleven of the past 14 years have been droughts for Lake Powell reservoir . Reservoir at Arizona-Utah border is 45 per cent below 'full pool ' capacity . Lake will drop even further as it gives water to Hoover Dam 's Lake Mead .