NEAR SIOUX CENTER, Iowa (KTIV) -
The DNR has traced a fish kill in the West Branch of the Floyd River to a business south of Sioux Center, Iowa.
We're still waiting on lab results, but it appears the likely source of the discharge causing the fish kill is Sioux-Preme Packing Company.
DNR staff found elevated ammonia levels and thousands of dead fish for at least nine miles downstream of the plant.
The company has hired a contractor to pump water pooled in a tributary to the stream where ammonia has concentrated.