From the Columbus Dispatch:

Warning signs are being posted at two more state parks, including one along Lake Erie, as blue-green algae continue to appear in more lakes across Ohio.

The Ohio Department of Natural Resources is to post warnings at the 2,650-acre lake at West Branch State Park near Ravenna in Portage County after an algae bloom was noticed there today. Also today, warning signs were posted along a 1,500-foot Lake Erie beach at East Harbor State Park in Ottawa County.

That brings to eight the number of state parks where officials are testing water for health-threatening liver and nerve toxins. The East Harbor warnings urge visitors to "minimize contact" with the lake water and avoid swallowing it.