Lincoln, NE — The state of Nebraska has extended a health alert for Harmful Algal Blooms (HAB), also known as toxic blue-green algae, at Kirkman’s Cove Lake in Richardson County. Glenn Cunninham Lake in Douglas County and Maskenthine Reservoir in Stanton County have been removed from health alert after being on alert last week.Samples taken earlier this week at Kirkman’s Cove Lake ...