Health alert issued for Willow Creek
September 30, 2021
The state has issued a health alert for harmful algal blooms, also known as toxic blue-green algae, at Willow Creek Reservoir in Pierce County and Iron Horse Trail Lake ( in Pawnee County. Bluestem Lake in Lancaster County is still on health alert.
Wirth Brothers Lake in Johnson County and Calamus Reservoir in Garfield County have been removed from health alert. This is the last week of monitoring for the regular sampling season.
Samples taken earlier this week at the lakes on alert measure above the threshold of 8 parts per billion of total microcystin, which is a toxin released by certain...