Since the discovery of whirling disease in 1995, the hatchery has undergone numerous renovations. All earthen bottom ponds are no longer used for trout production due to contamination from whirling disease. To make up for lost production capacity eight new concrete raceways were built for trout rearing. A water treatment plant was also built in 2004 to further combat whirling disease. The plant houses two drum filters, two disc filters, and four UV radiators which remove any whirling disease from the water source. Since 2006, the hatchery has been certified whirling disease free.