Nelson Irrigation offers several solutions for arena dust control.
Nelson Big Gun sprinklers can be mounted on the perimeter - away from the activities within the arena. The optional Quick-Coupling Valve provides extremely low friction loss, super smooth opening and closing and the ability to easily remove sprinkler after irrigation and cover valve box.
Another design consideration is to use a combination of S10 Spinners and MP Rotators. By using this type of system, the zone sizes can be designed to fit your water supply and you can have the option to run the perimeter and center zones separately. The use of more small heads in an environment like this will help to keep water out of overhead obstructions, and easily fit the shape of the arena while giving you the opportunity to match water application rates to reduce wet spots.