Chemical runoff from a construction site produced a massive fish kill March 7 on the Lower North Fork Big Thompson and Big Thompson River from Drake to west Loveland, according to Colorado Parks and Wildlife. The agency said more than 5,600 fish, including rainbow and brown trout, suckers and dace, died and blamed the incident on the Storm Mountain Road Bridge reconstruction project along Larimer County Road 43. Details of the event are still under investigation.
