Health officials for Nassau and Suffolk counties have closed many beaches because of pollution and higher bacteria levels caused by heavy rainfall and storm-water runoff.
On Friday, officials had announced closure of all Fire Island National Seashore ocean beaches on Saturday and Sunday, and Brookhaven Town also closed Davis Park Beach on Saturday because of possible riptides.
Separately, Suffolk's health department advised against swimming Saturday at beaches along the Great South Bay's north shore, in Sag Harbor and in North Shore harbors from Cold Spring Harbor to Port Jefferson because of pollution risk from runoff.
Beaches will be reopened once pollution has been flushed from the affected areas by tidal cycles, officials said.
The closed beaches in Nassau County, in addition to Glen Cove's Crescent Beach, are:
On the North Shore: Bar Beach, Centre Island Bay, Centre Island Sound, Creek Club, Laurel Hollow, Lattingtown Beach, Morgan Sound, Piping Rock Beach Club, Pryibil Beach, Ransom Beach, Roosevelt Beach, Sea Cliff Village Beach, Soundside Beach, Stehli Beach, Tappen Beach and West Harbor Beach.
On the South Shore: Biltmore Beach Club Beach, Hewlett Point Beach, Island Park Beach and Philip Healey Beach.