Fish kill and orange water in Cheslea Creek

Photo by eutrophication&hypoxia, Flickr.

A fish kill is being investigated in Cheslea Creek near Mason City. The fish kill was discovered after the Iowa Department of Natural Resources received reports that the water in Cheslea Creek had turned orange.

This discoloration was traced to the Golden Grain Energy facility, which releases cooling water into the creek. It’s believed that excess sulfuric acid was added to the cooling water system, causing rust within the pipes to drain into the creek.

The Iowa DNR is still determining penalties for Golden Grain.

Read more here.

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