Algal Mats Floating on the Surface of the Grand Calumet River Near Kennedy Avenue, Hammond, IN.

By Ohio-Kentucky-Indiana Water Science Center June 29, 2022

The blue sky is reflected in the water, disrupted by large green algal mats.

Detailed Description

Algal mats are floating on the surface of the water. This site is in the Grand Calumet River Area of Concern and has been dredged and capped to try to remediate pollution from historic industrial activity.

Sources/Usage

Public Domain.