Darrah Springs Hatchery is named for an early settler of the area, Simon H. Darrah. The current site drew interest to the state of California in 1941 for a trout hatchery due to its consistent artesian springs. Broodstocks of Rainbow and Eagle Lake trout are reared at Darrah Springs Hatchery which require consistent pristine water quality.
In order to minimize the effect of fluctuating water quality conditions from rain events, IAS was contracted to provide a state-of-the-art mechanical filtration and disinfection system to treat a flow of 15 CFS, which equates to 6,732 gpm. IAS designed, built, supplied and commissioned a turnkey Integrated Filtration Module (IFM) to meet the requirement. IAS engineered and fabricated a custom aluminum tank in three sections to set in place at the site, which significantly reduced construction and installation costs for the client. The engineered system included a model F5-10 HEX drum filter with AquaPLC™ Intelligent Controls and a Trojan UV3000+ in-channel UV sterilizer for disinfection. Today the system effectively filters and disinfects the source water to provide constant pristine water for the raceways.