MARENGO — Warm and dry weather has caused thousands of fish to die in the eastern Iowa community of Marengo.
The fish died in a small pond at Gateway Park.
The pond usually connects to the Iowa River, but that access was cut off when the river level dropped. That caused a drop in oxygen levels in the lake. Brad Baker, of the Iowa Department of Natural Resources, said fish kills have happened in the area before.
Most of the fish killed were carp, buffalo fish and shad.
A biologist with Baker’s department said the hot conditions should cause the fish to decompose quickly.