All state beaches are open except Kettletown State Park in Southbury and Wharton Brook State Park. Kettletown beach is closed due to blue green algae, Wharton Brook because of storm damage. The algae blooms have created greenish patches on the surface of the water. It can emit toxins harmful to people and pets. People exposed to the toxins by ingesting, inhaling or coming into contact with the algae have experienced irritation of the skin and respiratory tract; vomiting; and, if large amounts of the toxins are ingested, ailments of the liver or nervous system.