General Discussion

The lake contains 22 million gallons of water.[55] It is partly filled with well water, which was previously used for the Dunes golf course. The lake uses two-thirds of the water previously used for the course.[56] Water from the resort's aquatic show, O, also drains into the lake.[57]

Approximately 12 million gallons are used each year for the fountain shows,[55] and the lake uses roughly 500 pounds of chlorine per day.[54] Several restaurants at the Bellagio resort are situated to overlook the lake.[58] The water temperature ranges from 50 degrees in the winter to 85 degrees in the summer.[39] It is frequented by ducks,[36][39] some of which have made it their permanent home.[59]

The operating and maintenance team works in a hidden cavern known as the Batcave,[39][36][20] located within a fake rock formation beside the lake. The Batcave contains four equipment rooms.[8][25][34] The team consists of 30 people, including computer technicians, electricians, and welders. Due to the amount of time spent in the water, all team members are trained scuba divers.[54][36][25]https://en.wikipedia.org/wiki/Fountains_of_Bellagio