Bejon Haswell/Stuff Rangitata Diversion Race Management Ltd chief executive Tony McCormick is looking forward to the commissioning of the new fish screen. A massive $17 million fish screen project is underway for New Zealand's biggest irrigation scheme that starts in the Rangitata River. Rangitata Diversion Race Management Ltd (RDRML) chief executive Tony McCormick said the project was in response to concerns from anglers and runanga about fish, particularly sports fish such as salmon, and native fish such as galaxiids, getting caught into the 67-kilometre long irrigation race which extends from an intake on the Rangitata River at Klondyke to a discharge at Highbank on the Rakaia River.