Iowa DNR
Fish Kill DatabaseDB

Fish Kill Event - Mill Branch Creek

Lacona. Kill impacted Mill Branch Creek, Cotton Creek, and White Breast Creek.

Event ID
824
Date of Kill
8/23/2010
Waterbody Type
River/Stream
Cause Origin
Anthropogenic
Cause
Ammonia/Fertilizer
Mode
Spill
Magnitude
3 (1001 - 5000 fish killed)
Estimated Fish Killed
2,784
Kill Length
10.50 miles
Valuation
$12,891.81
Investigation Expenses
$3,526.69
County
Warren
ESD Field Office
FO 5
Fisheries Office
Boone Research Station
LongDD
-93.38274
LatDD
41.18325
Created Date
2/22/2011 1:12:00 PM
Last Update
2/19/2019 2:23:45 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

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 kill was a result of a leak from an anhydrous ammonia tank pipe. The cloud was sprayed down with water by the fire department. The contaminated water then entered Mill Branch Creek. . A road culvert and a tile intake/line allowed the ammonia to reach Mill Branch Creek. Mill Branch Creek flows into Cotton Creek, which then flows into White Breast Creek. Dead fish were observed in all three of these streams below the tile line.