Fish Kill Event - Iowa River

backwater, E of Riverside on #22

Event ID: 302
Date of Kill: 2/26/1996
Waterbody Type: River/Stream
Cause Origin: Natural
Cause: Environmental
Mode: N/A
Magnitude: 2 (101 - 1000 fish killed)
Kill Length: not enumerated
County: Washington
ESD Field Office: FO 6
Fisheries Office: Lake Darling State Park
LongDD: -91.51136
LatDD: 41.49621
Created Date: 4/20/2000 12:00:00 AM
Last Update: 4/2/2019 7:56:22 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

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.

Onsite Comments

pH 5-6, DO 14 ug/l, NH3-N 1.4 mg/l, The water had a brown orange tint - indicative of stagnant backwater w/ large amount of organic decomposition. Large number of fish presumably Gizzard Shad. Most 6" in length. Natural winter kill.