This aerial view shows a 30-foot-long barge distributing alum in Grand Lake at Otterbein Retirement Community on Thursday afternoon. Alum (the light area) will cause phosphorous in the water to bind and drop to the lake's bottom, making it unavailable to blue-green algae as a food source. The dark area in the picture shows water being churned up by the barge.
GRAND LAKE - Alum application was scrapped at two of five sites on Grand Lake this week because the water was too shallow, but treated areas produced positive results, officials say. [More