Abstract: A waterjet system comprising a nozzle supported within a cutting tank, the cutting tank having a floor and at least one upstanding wall defining a cutting volume, wherein the cutting volume is at least partially filled with a liquid, and wherein the nozzle is submersible within the liquid to perform a submerged cutting operation; a high pressure fluid supply selectively fluidly connected to the nozzle to produce a cutting stream; a controller; a level sensor in sensing communication with the liquid in the cutting tank to measure a liquid height within the cutting tank, the level sensor being in communication with the controller to provide the liquid height to the controller; a liquid level assembly in communication with the controller and adapted to maintain a selected liquid level within the cutting tank.