30m3/s c/- Genesis Energy. "Invasive aquatic weeds are still a major threat for Central North Island Rivers. Genesis Energy realises that kayakers and rafters come from throughout the country to the recreational releases and could unintentionally carry aquatic weeds. We ask that kayakers and rafters please endeavour to thoroughly clean your gear with either a 5% salt or detergent solution, or dry all equipment for at least 48 hours before you intend to use it on the release days. In addition, wash–down stations will be available at the put in points on the recreational release days."