Kettle Moraine, Wisconsin. Rushing Waters Fisheries is one of the most beautiful fish farms in the United States with 80 acres of pristine forests and valleys. Artisan springs feed 2.4 million gallons of crystal-clear water through 50 fresh, cold ponds every day. These underground springs maintain a water temperature of 50 degrees year-round. Rushing Waters produces the finest, fully-cooked smoked fish, processed in an HACCP-certified plant.