Fish Kill Event - Otter Creek
West Union
- Event ID
- 1018
- Date of Kill
- 8/9/2022
- Waterbody Type
- River/Stream
- Cause Origin
- Unknown
- Cause
- Unknown (Anthro Suspected)
- Mode
- N/A
- Magnitude
- 5 (10,001 - 25,000 fish killed)
- Estimated Fish Killed
- 20,172
- Kill Length
- 3.86 miles
- Valuation
- $3,099.91
- Investigation Expenses
- $1,393.82
- County
- Fayette
- ESD Field Office
- FO 1
- Fisheries Office
- Decorah State Hatchery
- LongDD
- -91.79323
- LatDD
- 42.94743
- Created Date
- 9/28/2022 12:18:11 PM
- Last Update
- 9/28/2022 12:18:11 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.
Water clarity excellent, no visible odors, numerous dead crawdads and darters littering stream bottom, unscaled fish (Stonecats) seen swimming erratically or dead. Prior to and during investigation, aerial spraying occurring. Aquatic vegetation present in upper sections (Horned and Flat-stemed Pondweeds), areas with gravel/cobble or silt substrates throughout. Overhanging vegetation densely covering undercut banks. Portions of this stream are stocked weekly with Rainbow Trout and throughout maintains a naturally reproducing Brown Trout population.
FISH KILLED |
Species |
Size of Fish |
Number Killed |
|
Minnow, Shiners, Dace, Chub |
All |
2,949 |
|
Stonerollers |
0-6 |
13 |
|
Darters |
0-2 |
16,997 |
|
Suckers |
0-3 |
8 |
|
Stonecat |
3-8 |
64 |
|
Green Sunfish |
3-6 |
20 |
|
Rainbow Trout |
0-17 |
4 |
|
Brown Trout |
0-17 |
117 |