DEEP: Swimming areas closed at some CT state parks FacebookTwitterEmail Rocky Neck State Park in Niantic.Joe Amarante / Hearst Connecticut Media / Swimming areas at some Connecticut state parks have closed as further water testing is completed, according to a state Department of Energy and Environmental Protection water quality report. Swimming areas at Rocky Neck State Park and Wharton Brook State Park are both closed and anticipated to undergo retesting Wednesday and have results Thursday, the report said. Gay City State Park’s swimming area also has closed; water results are anticipated for Wednesday after Tuesday’s retesting, according to the report.