(KLZA)-- The state of Nebraska has issued a health alert Friday for toxic blue-green algae, at Big Indian Lake in Gage County, Iron Horse Trail Lake Wildlife Management Area in Pawnee County, and Kirkman's Cove Lake in Richardson County.

Iron Horse Trail Lake and Kirkman's Cove Lake remained on alert this week after also being on the previous week.

These latest sampling results represent the end of the sampling season for NDEE and its partners. Sampling for toxic blue-green algae is conducted annually from May through September.