More Maine state parks and historic sites will begin to open for the season Friday.

Sebago Lake State Park in Casco is opening Friday, according to Park Manager Andy Haskell. And all the sites at Witch Cove will be open, which is about 125 sites. The shower buildings also will be open, he said.

Campers will be able to choose a site and self-register, Haskell said. However, formal campground reservations for Sebago don’t start until Monday, May 23.

Lake St. George State Park in Liberty also has opened for camping, according to Park Manager Leland Griffin.

Ferry Beach State Park in Saco is now open, though construction is taking place on Bayview Road, which runs in front of the park’s access road.

Finally, the floats will be back in the water at Warren Island State Park Friday.

Located off Lincolnville and Islesboro in Penobscot Bay, the park is one of two island facilities managed by the Bureau of Parks and Lands.

Floats also will be installed at Holbrook Island Sanctuary, located in Brooksville, as of May 3.

For more information on Maine state parks and historic sites, go to www.parksandlands.com