DNR Investigating Fish Kill Near Sheldon

Mon 8-20-2018

(Sheldon)-- The Iowa Department of Natural Resources announced late this (Monday) afternoon it's investigating a fish kill on the north fork of the Floyd River about seven miles northeast of Sheldon.

The fish kill was initially reported Saturday by a resident. Sunday DNR staff found dead fish near the confluence of the north fork and the Floyd River, extending about four miles downstream in the Floyd River.

DNR field specialists returned to the site today (Monday) but have not yet identified the source of the pollutant. Field tests indicated water in the north fork of the Floyd River has high dissolved oxygen and low levels of ammonia as of today (Monday). The agency says the recent rainfall likely diluted the pollutant. 

The DNR says areas further downstream were low in oxygen and high in ammonia. The agency says laboratory results won't be available until next week. 

An investigation is continuing in the meantime.