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Harmful Algal Blooms (HABs) Notifications Page

2016

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The map below displays the location of current HABs in New York State. Each location is labeled with a number that corresponds to the information in the table below.

There may be other waterbodies with blooms that have not been reported to the DEC.

This page provides information about the status of waterbodies with HABs. The information is collected through the 2016 DEC Lake Monitoring Program, Citizen Statewide Lake Assessment Program volunteers, partner HABs monitoring programs and from public reports.

Blooms of other algae are not reported here. See Important things to Know About HABs for tips on what to do when blooms are encountered.

Regulated swimming beaches are monitored regularly and evaluated for the presence of HABs. For information about regulated swimming beaches contact your local health department.

DEC encourages the public to view the HABs Archive page to be aware of lakes that were listed on the notification web page in previous years or removed from the current notification map.

For information about HABs on Lake Champlain, visit the Lake Champlain Committee monitoring page and the Vermont Department of Health's blue-green algae notification page (above two links leave DEC website.)

Map and table information is updated weekly.

This page was updated on 8/19/2016. DEC encourages the public to view the archive reports table to be aware of lakes that have been removed from the notification map.

Map of waterbodies sampled by DEC and those with HABs in NY.

Detailed map of HABs locations in NYC and LI

Waterbodies with HABs Notifications
Map Number Waterbody Name County Bloom Status Extent of Bloom Status Date Type of Report Change in Status
1 Agawam Lake Suffolk Confirmed Widespread/Lakewide 8/16/16 Lab sample Updated Listing
2 Allegheny Reservoir* Cattaraugus Suspicious Small Localized 8/5/16 Visual report No Change
3 Avon Marsh Dam Pond Livingston Suspicious Widespread/Lakewide 8/18/16 Visual report Updated Listing
4 Barger Pond Putnam Suspicious Not reported 8/5/16 Visual report No Change
5 Beaverdam Lake Orange Confirmed Not reported 8/9/16 Lab sample New
6 Big Bowman Lake Rensselaer Confirmed Small Localized 8/14/16 Lab sample New
7 Black Lake* St. Lawrence Confirmed Widespread/Lakewide 8/8/16 Lab sample No Change
8 Bowman Lake Chenango Suspicious Small Localized 8/11/16 Visual report No Change
9 Bowne Pond Queens Confirmed Not reported 8/1/16 Lab sample No change
10 Buck Pond Monroe Confirmed Small Localized 8/3/16 Lab sample No change
11 Cayuga Lake* Cayuga, Seneca Suspicious Small Localized 8/17/16 Visual report New
12 Cayuta Lake Schuyler Suspicious Not reported 8/13/16 Visual report New
13 Chautauqua Lake* Chautauqua Confirmed with High Toxins Open water 8/15/16 Lab sample Updated Listing
14 Cranberry Pond Monroe Confirmed with High Toxins Small Localized 8/3/16 Lab sample No Change
15 Deans Pond Cortland Confirmed Small Localized 8/13/16 Lab sample Updated Listing
16 Eagle Pond Franklin Suspicious Not reported 8/4/16 Visual report No change
17 East Marion Lake Suffolk Confirmed Not reported 8/8/16 Lab sample No Change
18 Fox Lake Sullivan Suspicious Large Localized 8/8/16 Visual report No Change
19 Golden Pond Queens Confirmed Not reported 8/17/16 Lab sample Updated Listing
20 Harlem Meer New York Confirmed Widespread/Lakewide 8/17/16 Lab sample Updated Listing
21 Honeoye Lake* Ontario Confirmed Widespread/Lakewide 8/15/16 Lab sample Updated Listing
22 Hook Pond Suffolk Confirmed Not reported 8/17/16 Lab sample Updated Listing
23 Hyde Park Lake Niagara Confirmed Small Localized 8/18/16 Lab sample New
24 Indian Lake Bronx Confirmed Widespread/Lakewide 8/16/16 Lab sample New
25 Java Lake Wyoming Confirmed Open Water 8/8/16 Lab sample No Change
26 Kellis Pond Suffolk Confirmed Widespread/Lakewide 8/17/16 Lab sample Updated Listing
27 Kirk Lake Putnam Suspicious Not reported 8/6/16 Visual report No Change
28 Lake Alice Orleans Suspicious Widespread/Lakewide 8/5/16 Visual report No change
39 Lake Lincolndale Westchester Confirmed with High Toxins Small Localized 7/31/16 Lab sample No Change
30 Lake Neatahwanta Oswego Confirmed Not reported 8/16/16 Lab sample Updated Listing
31 Lake Ontario (Long Point SP)* Jefferson Suspicious Small Localized 8/19/16 Visual report New
32 Mecox Bay Suffolk Confirmed Not reported 8/18/16 Lab sample New
33 Mill Pond (Watermill) Suffolk Confirmed Widespread/Lakewide 8/16/16 Lab sample Updated Listing
34 Montgomery Lake Sullivan Confirmed Large Localized 8/14/16 Lab sample Updated Listing
35 Moon Lake Jefferson Suspicious Not reported 8/18/16 Visual report New
36 Nassau Lake Rensselaer Confirmed with High Toxins Not reported 8/16/16 Lab sample New
37 Niger Pond Suffolk Confirmed Not reported 8/17/16 Lab sample New
38 North Sandy Pond* Oswego Suspicious Large Localized 8/9/16 Visual report No Change
39 Orange Lake Orange Confirmed Open water 8/9/16 Lab sample New
40 Peconic River Suffolk Confirmed Not reported 8/12/16 Lab sample New
41 Prospect Park Lake Kings Confirmed with High Toxins Large Localized 8/8/16 Lab sample No Change
42 Rockland Lake Rockland Suspicious Small Localized 8/5/16 Visual report No change
43 Roth Pond Suffolk Confirmed Widespread/Lakewide 8/18/16 Lab sample Updated Listing
44 Sagaponack Lake Suffolk Confirmed Widespread/Lakewide 8/17/16 Lab sample Updated Listing
45 Sixtown Pond Jefferson Confirmed Small Localized 8/2/16 Lab sample No change
46 Sucker Brook Ontario Suspicious Large Localized 8/18/16 Visual report Updated Listing
47 The Lake in Central Park New York Confirmed Widespread/Lakewide 8/17/16 Lab sample Updated Listing
48 Unnamed Pond (Delta Lake SP) Oneida Suspicious Widespread/Lakewide 8/4/16 Visual report No change
49 Unnamed Pond (near Cameron Mills) Steuben Confirmed with High Toxins Small Localized 8/17/16 Lab sample

New

50 Unnamed Pond (near Fairport) Monroe Confirmed Not reported 8/18/16 Lab sample New
51 Wainscott Pond Suffolk Confirmed Widespread/Lakewide 8/17/16 Lab sample Updated Listing
52 Warn Lake Chenango Confirmed Not reported 8/3/16 Lab sample No Change
53 Wilbur Pond Dutchess Suspicious Not reported 8/1/16 Visual report No change

* blooms in large lakes may be limited to specific shorelines or confined bays. Portions of any of these lakes may be clear and fully support recreational uses

This table reflected the status of harmful algal blooms as reported to DEC; public beach closure and drinking water information is available from your local health department.

The 2016 DEC Lake Monitoring Program includes the Lake Classification and Inventory Survey (LCI), the Citizens Statewide Lake Assessment Program (CSLAP) and several individual lake sampling programs. The map above shows locations sampled within the previous three weeks. For specific information about the current sampling results for lakes sampled through the 2016 DEC Lake Monitoring Program, contact the Division of Water at 518-402-8179.

Lake Champlain blooms are not reported here. For information about blue-green algae on Lake Champlain, visit the Lake Champlain Committee monitoring page and the Vermont Department of Health's blue-green algae notification page (above two links leave DEC website.)

Bloom Status

DEC HABs Program staff use visual observations, digital photographs and laboratory sampling results to determine whether a bloom consists of cyanobacteria (also known as blue-green algae) or another type of algae. A waterbody with a bloom may have one of three statuses: Suspicious, Confirmed or Confirmed with High Toxins Bloom.

  • Suspicious Bloom: DEC staff determine that conditions fit the description of a cyanobacteria bloom (HAB), based on visual observations and/or digital photographs. It is not known if there are harmful toxins or other compounds in the water. The bloom may be present in all or part of the waterbody. Laboratory analysis has not been done to determine if this is a HAB. Cyanobacteria are irritants to some people even if toxins are not present so all contact with the bloom should be avoided. Blooms may be present in all or part of the waterbody.
  • Confirmed Bloom: Water sampling results have confirmed the presence of a cyanobacteria HAB which may produce toxins or other harmful compounds.
  • Confirmed with High Toxins Bloom: Water sampling results have confirmed that there are toxins present in enough quantities to potentially cause health effects when people and animals come in contact with the water through swimming or drinking.

Extent of Bloom

The extent of the bloom is a rough estimate of the size of the bloom within the waterbody and is recorded by monitoring program staff or from public reports.

  • Small Localized: Bloom affects a small area of the waterbody, limited from one to several neighboring properties.
  • Large Localized: Bloom affects many properties within an entire cove, along a large segment of the shoreline, or in a specific region of the waterbody.
  • Widespread/Lakewide: Bloom affects the entire waterbody, a large portion of the lake, or most to all of the shoreline.
  • Open Water: Sample was collected near the center of the lake and may indicate that the bloom is widespread and conditions may be worse along shorelines or within recreational areas. Special precautions should be taken in situations when a Confirmed with High Toxins Bloom is reported with an Open Water extent because toxins are likely to be even higher in shoreline areas.

Important things to Know About HABs

  • If you see it - avoid it
  • People, pets and livestock should avoid contact with water that is discolored or has algae scums on the surface. Colors can include shades of green, blue-green, yellow, brown or red. If contact does occur, rinse thoroughly with clean water to remove algae.
  • Never drink untreated surface water, whether or not algae blooms are present. Untreated surface water may contain other bacteria, parasites or viruses, as well as cyanotoxins that could cause illness if consumed.
  • People not on public water supplies should not drink surface water during an algal bloom, even if it is treated, because in-home treatments such as boiling, disinfecting water with chlorine or ultraviolet (UV), and water filtration units do not protect people from HABs toxins.
  • Stop using water and seek medical attention immediately if symptoms such as vomiting, nausea, diarrhea, skin, eye or throat irritation, allergic reactions or breathing difficulties occur after drinking or having contact with blooms or untreated surface water.
  • Please report any health symptoms to your physician and NYS Department of Health at mailto:harmfulalgae@health.ny.gov or your local health department.
  • For answers to other frequently asked questions go to the DEC HABs FAQ page.
  • If you suspect that you have seen a HAB or you, your family, or pet has been in contact with a bloom, please report the bloom to the DEC. Fill out and submit a Suspicious Algal Bloom Report Form (PDF, 782 KB). Email the completed form and, if possible, attach digital photos (close-up and landscape to show extent and location) of the suspected bloom to HABsInfo@dec.ny.gov.

For more information you contact your regional DEC office or:

DEC HABs Program Coordinator
Rebecca Gorney Ph.D., Division of Water
Phone: (518) 402-8179

Email the DEC HABs Program

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Sign up for MakingWaves the Division of Water's weekly email subscription service to receive updates on HABs in New York waterbodies. MakingWaves provides information about important water-related issues, events, and news. To subscribe to MakingWaves, subscribe to GovDelivery (or see the box on the top of this page). When you reach the topics page, check the MakingWaves box under the Water category.