Iowa DNR
Iowa DNR Fish Kill Database

Fish Kill Event - Hardin Creek

Jefferson

Event ID
981
Date of Kill
8/18/2019
Waterbody Type
River/Stream
Cause Origin
Unknown
Cause
Unknown
Mode
N/A
Magnitude
6 (25,001 - 50,000 fish killed)
Estimated Fish Killed
41,869
Kill Length
10.40 miles
Valuation
$61,676.93
Investigation Expenses
$1,047.64
County
Greene
ESD Field Office
FO 4
Fisheries Office
Black Hawk Lake Office
LongDD
-94.36615
LatDD
42.04536
Created Date
8/28/2019 8:14:51 AM
Last Update
8/28/2019 8:14:51 AM
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
Onsite Comments

Fisheries spoke with two separate individuals that had been on or around the creek within the killed segment during the day on 8/17/19 and 8/18/19 and they did not observe any dead fish. This leads us to believe that the fish kill began sometime during or after the evening of 8/18/19, but before 8/21/19 when the kill was reported as fish were observed in various states of decay by 8/21/19. Also, fish were found on top of rocks in the middle of the stream and higher up on wetted sandbars suggesting that a high water event had occurred and when the flows subsided the dead fish were left where the water once was. Rains occurred the night of 8/19/19 and 8/20/19 and could have been enough to raise the creek for a short amount of time. This suggests that the kill occurred before at least one of the rain events.