(KLZA)--The state of Nebraska has issued a health alert for for Kirkman's Cove Lake in Richardson County and Iron Horse Trail Lake in Pawnee County due to the presence of toxic blue-green algae .

That word came Friday in a release from the Nebraska Department of Environment and Energy.

Recreational boating and fishing are permitted, but the public is advised to use caution and avoid exposure to the water, particularly avoiding any activity that could lead to swallowing the water.

Do not let pets get in the water or drink from the lake.

People can still use the public areas for camping, picnics, and other outdoor activities.