Iowa DNR
Iowa DNR
Fish Kill DatabaseDB

Fish Kill Event - Roberts Creek

South of Postville

Event ID
649
Date of Kill
8/1/2005
Waterbody Type
River/Stream
Cause Origin
Anthropogenic
Cause
Animal Waste
Mode
Spill
Animal Waste Source
Lagoon/Storage
Animal Type
Hogs
Approx Head
Unknown/Unspecified
Magnitude
4 (5001 - 10,000 fish killed)
Estimated Fish Killed
8,000
Kill Length
2.25 miles
County
Clayton
ESD Field Office
FO 1
Fisheries Office
Decorah State Hatchery
LongDD
-91.57043
LatDD
43.07188
Created Date
8/25/2005 12:00:00 AM
Last Update
2/19/2019 12:11:26 PM
For more information about this fish kill event, contact the Field Office or Fisheries Office listed above.
Impacted Assessment Segments
Lat/Long uses WGS84 datum

Highlighted river segments indicate those impacted in part or whole by this fish kill event. It is not meant to represent the actual extent of the kill.

Onsite Comments

Doug Hawker and Tom McCarthy have reported in from a fish kill they were investigating on Roberts Creek in Clayton County. The fish kill was called in earlier today and Doug and Tom have been in the process of tracing it back to its source, determining the responsible party and the cause. Doug and Tom had the following to report: The fish kill was caused by hog manure released from confinement operation. The manure release occurred when employee pulled the plug on a manure storage pit. Manure from this pit which is located under the confinement building is normally allowed to flow into a outdoor pit for storage before being applied to neighboring fields. Unfortunately there was not enough capacity in the outdoor pit to accept all the manure that was discharged from the first pit. This resulted in the outdoor pit overflowing. The overflowing manure eventually reached Roberts Creek and caused a fish kill along a 2 to 2 ½ mile stretch. Van Sterner of the Decorah Hatchery was on site to assist in the investigation and conduct a fish count. Owner has now taken steps to stop the flow of manure from reaching Roberts Creek. The operation is located in Section 8 of Grand Meadow Township. The fish kill occurred in Sections 8,9,15 and 16 of Grand Meadow Township. The spill killed more than 8,000 fish in the creek, mostly non-game species.