Fish Kill Event - UT Little Rock River

George- Bridge on County Road A-34 (210th St) between Jackson Ave and Ironwood Ave

Event ID: 655
Date of Kill: 8/19/2005
Waterbody Type: River/Stream
Cause Origin: Anthropogenic
Cause: Pollutant - Unknown/Unspecified
Mode: Unknown
Magnitude: 1 (1 - 100 fish killed)
Estimated Fish Killed: 80
Kill Length: not enumerated
County: Lyon
ESD Field Office: FO 3
Fisheries Office: Spirit Lake Hatchery
LongDD: -96.06267
LatDD: 43.34571
Created Date: 9/6/2005 12:00:00 AM
Last Update: 3/18/2019 9:10:17 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

At the point of the fish kill, the water slows down and pools. The water was murky and brown with lots of algae, but no odor or foaming was observed. DO >15 ppm. NH3-N at site 2.8 mg/L. Upstream NH3-N was 0.8 mg/L and downstream it was 1.4 mg/L. No fish seen upstream due to low flow, but water clear. Several minnows were observed downstream. No tile lines were observed feeding into the stream during the investigation.