Heavy rainfall caused the closure Saturday of 19 beaches in Nassau County, according to the county's Department of Health.

Stormwater runoff, officials said, can elevate bacterial levels and affect bathing water quality.

The closed beaches include 14 on the North Shore:

* Centre Island Sound

* Creek Club

* Lattingtown Beach

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* Laurel Hollow Beach

* Morgan Sound

* North Hempstead Beach Park

* Piping Rock Beach Club

* Pryibil Beach

* Ransom Beach

* Roosevelt Beach

* Sea Cliff Village Beach

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* Soundside Beach

* Stehli Beach

* Tappen Beach


Five Nassau South Shore beaches also closed:

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* Biltmore Beach Club

* Hewlett Point Beach

* Island Park Beach

* Merrick Estates Civic Association

* Philip Healey Beach


For up-to-date recorded information on beach closings and openings, call 516-227-9700.