Iowa DNR
Iowa DNR Fish Kill Database

Fish Kill Event - Unnamed Tributary to Canoe Creek

Decorah

Event ID
1019
Date of Kill
6/17/2022
Waterbody Type
River/Stream
Cause Origin
Natural
Cause
Environmental
Mode
N/A
Magnitude
1 (1 - 100 fish killed)
Estimated Fish Killed
3
Kill Length
150.00 miles
Valuation
$45.00
County
Winneshiek
ESD Field Office
FO 1
Fisheries Office
Decorah State Hatchery
LongDD
-91.71664
LatDD
43.37138
Created Date
9/28/2022 12:37:05 PM
Last Update
9/28/2022 12:37:05 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
Onsite Comments

Heavy rain and cooling in area after days of hot, dry weather caused area streams to flash. This likely caused a flush of warm water concentrated with nutrients into deeper pool around bridge on Middle Sattre Rd. Oxygen sagged and temperature spiked in pool causing Brown Trout to die. Canoe Creek was carrying a heavy silt load with minimal visibility. Visibility on the tributary was limited and stained green in pool on Middle Sattre Rd. Water temperature in tributary at 3pm was 71 F. Found no other dead fish between Middle Sattre Rd. to mouth (150ft) or off of any other bridges.