So the lake can be pumped dry in less than 15 days. Cool.
3,097,600 Sq Ft in 1 Sq mile
1,951,488,000 Sq ft in 630 Sq mile
25,369,344,000 Cubic ft at 13 ft deep
189,775,377,792 Gallons at 7.4805 per cubic ft
1,265,169.19 Seconds to pump at 150k per
21,086.15 Minutes
351.44 Hours
14.64 Days