Two days of heavy rainfall prompted Suffolk County health officials on Wednesday to extend an advisory against swimming at 12 beaches.
The Suffolk County Department of Health Services said the rains raised concerns over bacteria at beaches in areas that are heavily influenced by stormwater runoff from the surrounding watersheds and/or adjacent tributaries.
The stormwater runoff can sweep bacteria and pathogens into local streams and bays, causing bacteria levels to spike, according to health officials.
The department is hoping that two successive tidal cycles will flush the waters; that cycle should be completed by 7 p.m. Wednesday, when the advisory is expected to be lifted.
The beaches affected include Sound Beach West, Scotts Beach and Tides Beach, Sound Beach; Beech Road Beach, Broadway Beach, Friendship Drive Beach and Terraces on the Sound, Rocky Point; Shoreham Village Beach, Shoreham; Shoreham Beach and Shoreham Shore Club Beach, East Shoreham; and Miller Place Park Beach and Woodhull Landing Beach, Miller Place.
In Suffolk, information on beach closings is available by calling the health department's Bathing Beach hotline, 631-852-5822 or by visiting suffolkcountyny.gov/health and clicking on the links "Our Environment" and "Beaches."