Lincoln, NE – The state of Nebraska has issued a health alert for Harmful Algal Blooms (HAB), also known as toxic blue-green algae, at Iron Horse Trail Lake in Pawnee County and Maskenthine Reservoir in Stanton County. Samples taken earlier this week at the lakes on alert measure above the threshold of eight parts per billion (ppb) of total microcystin, which is a toxin released by certain st...