The Beach Surveillance Program protects the public from illnesses associated with swimming in contaminated bathing waters. 

Beaches are generally open Memorial Day through Labor Day. To find out if a particular beach is open for the season, check the public and private beaches page for the phone number of the beach you're interested in.

Public health-related beach closings on Monday through Friday are available here. For information on weekend beach closures check with the beach itself.

Beach Closings:  

  • Harbor Island
  • Beachpoint
  • Mamaroneck Beach and Yacht
  • Shore Acres
  • Coveleigh Club
  • Davenport Club
  • Greentree Club
  • Surf Club
  • Hudson Park 
  • Echo Bay Yacht Club (Have yet to open for season)
  • Orienta Club 


The following beach is closed pending sample results for possible Harmful Algae Blooms (HAB):

  • Lake Lincolndale, Somers N.Y.10541


As of August 22, 2019: The following permitted beach on Mohegan Lake in Yorktown are closed until further notice due to Blue-Green Algae blooms in the regulated swimming areas:

  • Mohegan Beach Colony


Beaches are sometimes closed due to excessive rainfall

Based on studies by the Westchester County Department of Health, heavy rainfalls in the watershed of the Mamaroneck River greatly impact the quality of water in the Mamaroneck Harbor. Echo Bay in New Rochelle is similarly affected impacting Hudson Park Beach and Echo Bay Yacht Club.

Beach closures are based on the number of inches of rain on the watershed. Heavy rains and discharges from stormwater drains directly affect these waters. As a result, these waters may contain high levels of harmful bacteria that may cause illness after a heavy rain.

Threshold levels have been established to promote a guide for the closing of beaches located within the protected area of these harbors.

  • Greater than 1/2 inch of rain = 1 day closure
  • Greater than 1inch of rain = 2 day closure
  • Greater than 2 inches of rain = to be determined

If you plan on going to any of these beaches after a rainfall, check to make sure they are open by calling the beach.

Beaches within Mamaroneck Harbor

  • Harbor Island
  • Beach Point Club
  • Mamaroneck Beach and Yacht Club
  • Shore Acres Point Club
  • Orienta Beach Club

Beaches on open water in Rye

  • Coveleigh Club


Beaches in Davenport Neck, New Rochelle

  • Davenport Club
  • Greentree Club
  • Surf Club


Beaches within Echo Bay, New Rochelle

  • Echo Bay Yacht Club
  • Hudson Park Beach