Fish Kill Event - Unnamed Tributary to Dry Run and Dry Run Creek
Calmar Township, Winneshiek County
- Event ID
- 1070
- Date of Kill
- 3/10/2025
- Waterbody Type
- River/Stream
- Cause Origin
- Anthropogenic
- Cause
- Animal Waste
- Mode
- Runoff
- Animal Waste Source
- Unknown/Unspecified
- Animal Type
- Unknown/Unspecified
- Approx Head
- Unknown/Unspecified
- Magnitude
- 8 (100,001 - 500,000 fish killed)
- Estimated Fish Killed
- 126,469
- Kill Length
- 10.20 miles
- Valuation
- $30,923.54
- Investigation Expenses
- $1,750.63
- County
- Winneshiek
- ESD Field Office
- FO 1
- Fisheries Office
- Decorah State Hatchery
- LongDD
- -91.92654
- LatDD
- 43.24915
- Created Date
- 4/22/2025 1:30:22 PM
- Last Update
- 4/22/2025 1:30:22 PM
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.
Kill was caused by overland runoff from an animal feeding operation discovered Monday evening, 10 March 2025.
Fish species identified in the kill included: Blacknose Dace, Bluntnose Minnow, Brook Stickleback, Common Shiner, Creek Chub, Fantail Darter, Longnose Dace, Johnny Darter, Sand Shiner, Stoneroller, and White Sucker. Dead aquatic worms, crawdads, and frogs were also observed within the reach.
SPECIES NUMBER KILLED MONETARY VALUE
Minnows, shiners, chubs, and dace* 106,693 $12,803.16
Stoneroller 11,406 $1,412.09
Suckers 4,626 $15,208.76
Darters 3,744 $1,499.53
Totals 126,469 $30,923.54
*Brook Stickleback are included in this total.