 Crown Fountain has both slits and a <unk> for drainage ( pictured above right ) to drain the 11 @,@ 520 US gal ( 43 @,@ 608 l ; 9 @,@ 592 imp gal ) of water per minute . When the videos are not on the front of the tower , water <unk> down each of the facades . The water is filtered , pumped and <unk> through the fountain . Dual pump rooms below each tower draw water from a reservoir beneath the reflecting pool . There are 12 mechanical pumps that are regulated from a control room in the underground parking garage beneath the south tower of the fountain . The water in the reflecting pool has a depth of about 0 @.@ 33 millimetres ( 0 @.@ <unk> in ) . 
