REPUBLICAN CITY, Neb. (AP) — State officials have issued a health advisory at Harlan County Reservoir after high levels of toxic blue-green algae were detected earlier this week.

Meanwhile, a health advisory issued earlier this month at Pawnee Lake in eastern Nebraska has been lifted.

The elevated algae levels at Harlan County Reservoir were detected during testing by the Nebraska Department of Environmental Quality. During this same round of testing, blue-green algae levels at Pawnee Lake were shown to have dropped to normal levels.

Visitors to Harlan County Reservoir should avoid full body contact activities such as swimming, wading, skiing and jet skiing. Boating, fishing and camping have been deemed safe.

The lake will be tested weekly through the summer months, and the health advisory will be lifted if the algae levels return to normal.