Iowa DNR
Fish Kill DatabaseDB

Fish Kill Event - Spring Creek

NE of Osage

Event ID
1027
Date of Kill
3/23/2021
Waterbody Type
River/Stream
Cause Origin
Unknown
Cause
Unknown - Anthropogenic Suspected
Mode
N/A
Magnitude
4 (5001 - 10,000 fish killed)
Estimated Fish Killed
6,356
Kill Length
0.29 miles
Valuation
$2,251.87
Investigation Expenses
$1,039.34
County
Mitchell
ESD Field Office
FO 2
Fisheries Office
Decorah State Hatchery
LongDD
-92.77198
LatDD
43.29627
Created Date
10/7/2022 9:42:26 AM
Last Update
10/7/2022 9:42:26 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

While the primary cause of kill is unknown, it was not due to winter conditions.

Fish kill assessment was made by a complete count of all dead fish encountered because the stream was completely accessible, kill extended less than 3 miles, and water clarity was adequate.

Theresa Shay was contacted by an anonymous caller on Tuesday, March 23, 2021 at noon who reported seeing a large number of dead fish from the bridge on 370 th St. and Noble Ave. They didn’t know how long ago the kill occurred.

Shay reported the kill to ESD FO 2, Mason City. Theresa Shay and Steve Pecinovsky arrived on site at 2pm and began determination of extent and possible cause of kill. ESD staff arrived shortly after and began taking water samples. It was difficult to determine age of kill based on various states of body condition of fish. Due to time of day and rain, it was decided to return the following day to count fish. Staff counted and measured all dead fish found over a 0.29 mile distance until no dead fish were observed. No weights were taken due to poor body condition of the fish.

SpeciesNumber Killed
Minnows, Shiners, Chubs, and Dace5850
Suckers480
Darters3
Brown Trout5
Stone Rollers18