Pictured here a ride called 'Dorsal Fin Drop'. Saturday, September 7, 2013, Carowinds announced the addition of two new water slides to Boomerang Bay for Summer 2014. The mega-slides are the first phase of a multi-year, multi-million dollar capital investment plan at Carowinds. The new slides will stand over 4 stories. Officials said the slides will offer two distinctly different rides unique to Boomerang Bay.