Fish Kill Event - Iowa River

Iowa City

Event ID: 1074
Date of Kill: 3/9/2026
Waterbody Type: River/Stream
Cause Origin: Natural
Cause: Environmental
Mode: N/A
Magnitude: 0 (Unknown/Unspecified fish killed)
Kill Length: not enumerated
County: Johnson
ESD Field Office: FO 6
Fisheries Office: Lake Macbride Station
LongDD: -91.53406
LatDD: 41.67588
Created Date: 5/15/2026 9:18:21 AM
Last Update: 5/15/2026 9:34:14 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

The fish kill in the Iowa River in Iowa City on 3/9/26 was determined to be natural. The dead fish were gizzard shad, which is typical for this time of year.