Fish Kill Event - Lake Orient

Event ID: 1039
Date of Kill: 8/4/2023
Waterbody Type: Lake
Cause Origin: Natural
Cause: Environmental
Mode: N/A
Magnitude: 2 (101 - 1000 fish killed)
County: Adair
ESD Field Office: FO 4
Fisheries Office: Cold Springs State Park
LongDD: -94.43684
LatDD: 41.19613
Created Date: 8/4/2023 7:36:40 AM
Last Update: 8/4/2023 7:36:40 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

Onsite Comments

The observed fish kill at Lake Orient would be considered natural and will have minor impacts to the fish population. I observed between 500 and 1000 dead Largemouth Bass and Bluegill. Lake Orient has a history of fish kills related to hypereutrophic conditions. Summer algae blooms are common, causing wide fluctuations in dissolved oxygen. This appears to be the cause of this event. Last spring I investigated winterkill following ice out at Lake Orient. These events are not complete and given time the fish population will recover.