New confirmed HABs are listed with the diamond bullet ◆

Central Watersheds (27 active) draining a portion of interior NYS down to the Atlantic Ocean via Long Island Sound, including the water supply for New York City

Upper Hudson River Watershed (1 active) drains an area in central NYS to the east of centre, starting in the Adirondacks, flowing south toward Long Island Sound; the section south of Albany is reported as Lower Hudson River Watershed

Saratoga Lake (1 active)

• July 28, 12 pm bloom of unknown extent confirmed on near the east shore midway down the main body of the lake, north of Snake Hill in Saratoga County remains active this week. Reported by the public. Note the appearance as grass clippings, characteristic of toxin-producing blue-green algae.

Snyders Lake (0 active)

Widespread/lakewide bloom confirmed July 22 in Rensselaer County has been archived.

Champlain Canal (0 active)

Large localized bloom confirmed July 20 in Washington County has been archived.

Mohawk River Watershed (1 active) drains the area starting just west of center of NYS, gathers run-off through the south side of the Adirondacks as it flows mainly east to join the Hudson River in Albany County. Schoharie Creek flows north from the Catskills and drains a channel of central state north to join the Mohawk River.

Unnamed Pond (Catskill) (0 active)

July 25, 1:20 pm small localized bloom confirmed in Greene County has been archived.

Washington Park Pond (1 active)

• July 29, 9am small localized bloom confirmed in Albany County remains active this week. Reported by NY Department of Health.

A large localized bloom reported on July 15 has been archived.

Bear Gulch Pond (0 active)

Widespread/lakewide bloom confirmed July 12 has been archived.

Large localized bloom confirmed July 7 in Schoharie County has been archived. 

Vlaie Pond (0 active)

Large localized bloom confirmed in Schoharie County on June 24 has been archived.

North-South Lake (0 active)

Small localized bloom confirmed in the Catskills Mountains Greene County on June 24 has been archived.

Thompsons Lake(0 active)

Small localized bloom confirmed June 15 in Albany County has been archived.

Lower Hudson River Watershed (10 active) draining the lower portion of New York State interior out to the Atlantic.

Lake Welch (1 active)

◆ August 2, 10 am widespread/lakewide bloom confirmed mid-lake in Rockland County. Reported by NY Parks.

July 12 widespread/lakewide bloom confirmed in Rockland County has been confirmed.

A widespread/lakewide bloom confirmed June 26 has been archived.

Lake Lincolndale (1 active)

◆ August 2, 2pm bloom of unreported extent confirmed in Westchester County. Reported by the NYS Department of Health.

A large localized bloom confirmed June 19 has been archived. A previous bloom on this lake reported June 5 has been archived.

Lake Purdys (1 active)

◆ August 2, 2 pm bloom confirmed in Westchester County. Reported by NYS Department of Health.

Basic Creek Reservoir (1 active)

◆ July 29, 2 pm large localized bloom confirmed in a northwest bay, Albany County.

Lawson Lake (1 active)

◆ August 3, 9:11 am widespread/lakewide bloom confirmed mid-lake in Albany County. Reported by the public.

Two large localized blooms confirmed in July have been archived.

Schor Pond (1 active)

◆ August 2, 6:08 pm small localized bloom confirmed in Columbia County. Reported by the public.

Putnam Lake (2 active)

◆ August 1, 9 am bloom of unspecified extent confirmed midlake in Putnam County.

◆ July 29, 12:30 pm bloom of unspecified extent confirmed on the east shore nearest Jackson Rd in Putnam County. Reported by NYS Department of Health.

A widespread/lakewide bloom confirmed June 29 in Putnam County has been archived. 

A small localized bloom confirmed June 29 in Putnam County has been archived.

Round Pond (0 active)

Two widespread/lakewide blooms confirmed in July have been archived.

Chodikee Lake ( 0 active)

July 13 small localized bloom confirmed in Dutchess County has been archived.

Moordener Kill (0 active)

Small localized bloom confirmed July 22 has been archived.

Nooteeming Lake (0 active)

Two small localized blooms confirmed in Dutchess County have been archived. 

Deer Lake (0 active)

A small localized bloom confirmed June 30 in Dutchess County has been archived.

A second small localized bloom is confirmed at what appears to be the same site on Deer Lake as of June 29 has been archived.

Seven Hills Lake (0 active)

July 10 widespread/lakewide bloom confirmed in Putnam County has been archived.

July 9 small localized bloom confirmed in Putnam Count has been archived.

Lake Carmel (0 active) flows into the west branch of the Croton River, and eventually reaches the Croton Reservoir, City of New York water source

Two small localized blooms confirmed June 26 in Putnam County by NYS DOH have been archived.

Lake Casse (0 active)

Small localized bloom confirmed on June 23 has been archived. Reported in Putnam County by NYS DOH. Another 2022 bloom record was posted for this lake on June 13 has been archived.

Roaring Brook Lake (0 active)

July 13 small localized bloom confirmed in Putnam County has been archived.

Three previous bloom events this season have been archived.

Lake Peekskill (0 active)

July 2, two small localized blooms confirmed in Putnam County have been archived.

A small localized bloom confirmed on June 29 has been archived.

A small localized bloom confirmed June 26 north of the point, along the east shore has been archived.

Another small localized bloom confirmed June 26 appears from the map tag right onshore in the north end of the lake off Northway Rd has been archived.

Orange Lake (0 active)

Open water bloom confirmed in June has been archived.

Lake Mohegan (2 active)

• July 7, 3:48 pm small localized bloom confirmed in Westchester remains active this week. The location tag places this bloom mid-lake.
  • July 5, 9:50 am small localized bloom confirmed in Westchester County at Mohegan Park Beach remains active this week. Reported by NYS DOH.

A small localized bloom confirmed June 28 has been archived; a widespread/lakewide bloom confirmed June 19 has been archived.

Lake Tiorati (0 active)

A large localized bloom confirmed June 24 has been archived. 

Beaverdam Lake (0 active)

July 14 small localized bloom confirmed in Orange County has been archived.

July 13, 9:39 pm large localized bloom confirmed in Orange County has been archived.

June 30 bloom has been archived; a bloom reported June 29 has been archived.

Another Eight previous bloom reports this season for Beaverdam Lake have been archived.

Rockland Lake (0 active)

A small localized bloom confirmed in May has been archived.

Delaware River (2 active) drains a portion of south-central NYS into the Delaware River and out to Long Island Sound.

Launt Pond (1 active)

◆ Aug 1, 12:30 pm widespread/lakewide bloom confirmed in Delaware County. Confirmed by DEC staff.

Lake Superior (1 active)

◆ Aug 5, 7:50 am large localized bloom confirmed in Sullivan County. Reported by the public.

July 22, two small localized blooms have been archived.

Silver Lake (0 active)

A widespread/lakewide bloom confirmed in Sullivan County on June 30 has been archived.

Evens Lake (0 active)

July 11 large localized bloom confirmed in Sullivan County. The location tag appears at the centre of the lake. Reported by the public.

Housatonic River (0 active) draining a small part of Dutchess County, the river itself originates in Vermont, flows south through Massachusetts and Connecticut to the outlet into Long Island Sound east of Bridgeport.

Unnamed Water Body (Pawling) widespread or lakewide bloom confirmed in Dutchess County on June 21 is archived.

Atlantic Ocean/Long Island Sound Watershed (13 active)

Morningside Pond (0 active)

July 31, 4:15 pm widespread/lakewide bloom confirmed in Manhattan.

Blooms confirmed in April, June and July of this season have been archived.

Unnamed Water (0 active)

July 5, widespread/lakewide bloom confirmed in Westchester County has been archived.

Lake Waccabuc (0 active)

A widespread/lakewide bloom confirmed June 26 has been archived.

Sheldrake Lake (0 active)

A Large localized bloom confirmed June 22 has been archived. 

Glenwood Lake (0 active)

A widespread/lakewide bloom confirmed on June 21 has been archived. 

Harlem Meer(0 active)

July 12 and 26^th confirmed blooms have been archived.

A small localized bloom confirmed on the north end of Central Park June 30 has been archived. 

Turtle Pond (1 active)

◆ July 12, 11:30 am large localized bloom confirmed in Manhattan. NYC Parks made the report.

Large localized bloom confirmed in Central Park June 30 has been archived.

The Lake in Central Park (2 active)

◆ August 8, 10:10 am widespread/lakewide bloom confirmed in Manhattan. Reported by NYC Parks.

• August 2, 9:47 am widespread/lakewide bloom confirmed in Manhattan remains active this week. Reported by the NYC Parks Department.

July 12, 11:18 am widespread/lakewide bloom has been archived.

July 6, 11 am widespread/lakewide bloom has been archived.

Four previous blooms confirmed this season have been archived.

Prospect Park Lake (2 active)

◆ August 5, 1:29 pm widespread/lakewide bloom confirmed in Kings County (Brooklyn). Reported by NYC Parks.

• July 29, 1:19 pm widespread/lakewide bloom confirmed in Kings County remains active this week. Reported by NYC Parks Department.

Three blooms confirmed in June and 3 blooms in July have been archived, along with two earlier blooms this season.

Martlings Pond/Richmond Lake (0 active)

July 14 small localized bloom confirmed in Richmond County has been archived.

Clove Lake (0 active)

Two large localized blooms confirmed in Richmond County (Staten Island) in July have been archived.

Silver Lake Reservoir (1 active)

◆ Aug 1, 11 am widespread/lakewide bloom confirmed in Staten Island. Reported by NYC Parks.

A bloom confirmed July 14 has been archived.

Brooks Pond (0 active)

July 25 small localized bloom has been archived.

Goose Pond in Captain Tilly Park (1 active)

• July 30, 7:22 pm widespread/lakewide bloom confirmed in Queens. Reported by NYC Parks.

Widespread/lakewide blooms confirmed June 21 and July 11 have been archived, along with a bloom confirmed earlier this season.

Kissena Lake (0 active)

July 25 small localized bloom has been archived; July 14 widespread/lakewide bloom has been archived;

Roth Pond, on campus of Stony Brook University (0 active)

A widespread/lakewide bloom confirmed June 22 has been archived, along with seven previously confirmed algae blooms this season, some as early as March and April.

East Marion Lake (1 active)

• July 5, 4:14 pm a bloom of unreported extent confirmed in Suffolk County remains active this week.

Maratooka Lake (2 active)

◆ Aug 8, 5:10 pm a bloom of unreported extent is confirmed in Suffolk County lake. Reported by Stony Brook University.

◆ Aug 1, 5:29 pm bloom of unreported extent confirmed in Suffolk County, reported by Stony Brook University.

July 12 bloom, July 5 bloom, June 27 blooms have been archived.

Wainscott Pond of the Hamptons (1 active)

◆ Aug 2, 6:01 pm widespread/lakewide bloom confirmed in Suffolk County. Reported by Stony Brook University.

July 6, 21 and 26 widespread/lakewide blooms have been archived.

Two blooms in May, four in June confirmed this season have been archived.

Sagg Pond (0 active)

July 26 bloom reported by Stony Brook University has been archived.

Agawam Lake, near the Hampton Bays (1 active)

◆ Aug 2, 5:53 pm widespread/lakewide bloom confirmed in Suffolk County.

Four blooms confirmed in July have been archived; four blooms confirmed in June have been archived.

Three blooms recorded previously this season in May have been archived.

Mill Pond (Watermill) (1 active)

◆ Aug 2, 6:02 pm widespread/lakewide bloom confirmed in Suffolk County. Reported by Stony Brook University.

Four blooms in July have been archived.

Four previous blooms for the season have been archived.

NE Watersheds (8 active) draining an area of north and northeast NYS out to the St. Lawrence River

Lake Champlain Watershed (2 active) flows starting in the north-central part of the state, in the Adirondacks, flowing generally east to Lake Champlain.

Lake Champlain (1 active)

◆ August 7, 11:23 am large localized bloom confirmed in Clinton County just north of the Pointe au Roche State Park. Reported by the NYS Parks Department.

July 14, 20 small and large localized blooms confirmed in Clinton County have been archived. 

Clinton County, Lake Champlain July 13, 2022 Photo NYS DOH

Fern Lake (1 active)

◆ Aug 1, 1:14 pm large localized bloom confirmed in Clinton County off the east shore off Fern Lake Rd, near the halfway point of the water body. Reported by the public.

St. Lawrence River Watershed (6 active)

Hyde Lake (6 active)

◆ Aug 6, 8:50 am widespread/lakewide bloom confirmed off the west shore in the north end of the lake, in Jefferson County. Reported by the public.

◆ Aug 5, 11:30 am large localized bloom confirmed off the west shore of Hyde Lake, in the north end of the lake, in Jefferson County. Reported by the public.

◆ Aug 5, 1:20 pm open water bloom confirmed toward the south end of the lake, around the center of the water body. Reported by the public.

◆ Aug 5, 2:23 pm large localized bloom confirmed off the south shore, east bay in Jefferson County. Reported by the public.

◆ Aug 1, 9:46 am large localized bloom confirmed off the south shore, west bay. Reported by the public.

◆ July 31, 1:46 pm open water bloom confirmed in the centre of the water body, Jefferson County. Reported by CSLAP.

A small localized bloom from July 27 has been archived.

Black Lake (0 active)

July 7 large localized bloom confirmed in St. Lawrence County on the north/west shore, half way down the shoreline has been archived.

Moon Lake (0 active)

July 23 open water bloom confirmed in Jefferson County has been archived.

NW Watersheds (17) (draining west to Lake Erie or Lake Ontario)

Lake Ontario Minor Tributaries Watershed (4 active)

Lake Ontario (2 active)

◆ Aug 5, 1:23 pm large localized bloom confirmed offshore Southwick Beach State Park in Jefferson County. Reported by NYS Parks Department.

◆ Aug 5, 12:59 pm large localized bloom confirmed north of Pine Grove Rd/Selkirk Shores State Park near the outlet of the Salmon River in Oswego County. Reported by the public.

North Pond (2 active)

◆ Aug 4, 7:07 pm widespread/lakewide bloom confirmed on the south side of Green Point in Oswego County. Reported by the public.

◆ Aug 4, 4:57 pm open water bloom confirmed in the center of the water body. Reported by the public in Oswego County.

Braddock Bay, Lake Ontario (0 active)

Two small localized blooms confirmed June 20 and a widespread/lakewide bloom confirmed July 1 have been archived.

Mud Bay, Lake Ontario (0 active)

July 4 large localized bloom confirmed in Mud Bay at the Kents Creek outlet in Jefferson County remains active this week. 

Casey Park Pond (0 active)

July 4 small localized bloom confirmed at the west end of Casey Park Pond in Wayne County has been archived.

Black River Watershed (0 active) draining an area of central NYS west to Lake Ontario

Niagara River – Lake Erie Watershed (0 active) draining northwest NYS west to Lake Erie

Ellicott Creek (0 active)

July 7 widespread/lakewide bloom confirmed in Erie County has been archived.

Genesee River Watershed (3 active) draining a band of west-central NYS from the south border to the north, emptying into Lake Ontario at Rochester, Monroe County

Conesus Lake (2 active)

◆ Aug 5, 1:11 pm small localized bloom confirmed off the east shore, south of the halfway point in Livingston County. Reported by NYS Parks

◆ Aug 5, 2 pm widespread/lakewide bloom confirmed off the west shore, nearest land reference being the intersection of West Lake Rd and Long Point Rd. Reported by NYS Dept of Health.

July 27, 22 large localized blooms in the south end of the lake have been archived

July 13 small localized bloom confirmed in Livingston County has been archived.

July 12 large localized bloom confirmed in Livingston County has been archived.

Hemlock Lake (0 active)

July 22, 23 large localized blooms have been archived.

Honeoye Lake (1 active)

◆ Aug 8, 11:18 am open water bloom confirmed mid-lake in Ontario County. Reported by Honeoye Lake Watershed Task Force.

July 11, 8, 7, 4 open water, large and small localized and widespread blooms confirmed in Ontario County have been archived. Six blooms confirmed in June have been archived.

Avon Marsh Dam Pond (0 active)

A widespread/lakewide bloom confirmed June 28 has been archived.

Woodstream Campsite Pond (0 active)

July 26 small localized bloom confirmed in Wyoming County has been archived.

Silver Lake (0 active)

July 3 small localized bloom confirmed in Wyoming County has been archived.

A previous bloom report from June 24 has been archived.

Oswego River – Finger Lakes Watershed (10 active)

Keuka Lake (4 active)

◆ Aug 6, 1:08 pm small localized bloom confirmed off the north tip of the west fork in Yates County. Reported by Keuka Lake Association.

◆ Aug 5, 11:08 am large localized bloom confirmed in the north end of the east fork, reported by Keuka Lake Association.

◆ Aug 5, 12:51 pm small localized bloom confirmed around the north tip in Yates County. Reported by NYS Department of Health.

◆ Aug 4, 11:23 am small localized bloom confirmed off the west shore in Steuben County, at the bottom of the west fork. Reported by Keuka Lake Association.

Waneta Lake (1 active)

◆ Aug 6, 5:15 pm large localized bloom confirmed in the north end of the lake, in Schuyler County. Reported by the public.

Cayuta Lake (1 active)

◆ Aug 6, 9 am large localized bloom confirmed at the north end of the lake in Schuyler County. Reported by the public.

Cross Lake (0 active)

July 4, widespread/lakewide bloom confirmed in Cayuga County on the north side of Erie Canal inlet to Cross Lake has been archived.

Otisco Lake (0 active)

July 15, small localized bloom confirmed in Onondaga County has been archived.

July 11 large localized bloom confirmed in Onondaga County has been archived.

July 10 large localized bloom confirmed in Onondaga County has been archived.

Three more small localized blooms confirmed on Jul 7 - 10, in Onondaga County have been archived.

Cayuga Lake (2 active)

◆ Aug 5, 12:30 pm large localized bloom confirmed off the east shore, State Route 90N. Reported by Community Science Institute.

• July 29, 11 am small localized bloom confirmed off the east shore, Kozy Kove Rd remains active this week. Reported by the Community Science Institute.

July 15, 13th a number of small localized blooms confirmed in Tompkins County (west shore) and Cayuga County have been archived.

July 7, 8 three small localized blooms confirmed in Cayuga County, east shore near Lake St and Lower Lake Rd have been archived.

Small localized bloom confirmed Jul 2 in Cayuga County has been archived.

Jamesville Reservoir (1 active)

◆ Aug 5, 4 pm a bloom of unreported extent confirmed in Onondaga County. Reported by NYS Department of Health.

July 13, small localized bloom confirmed in Onondaga County has been archived.

Song Lake (0 active)

July 15 small localized bloom confirmed in Cortland County has been archived.

A small localized bloom confirmed June 25 in Cortland County has been archived.

Fairport Reservoir (0 active)

A large localized bloom confirmed June 23 at the north end of the western reservoir has been archived.

Dryden Lake Outlet (1 active)

◆ July 29, 1:40 pm large localized bloom confirmed midlake in Tompkins County. Reported by the public.

July 13 bloom has been archived.

Casterline Pond (0 active)

July 11, widespread/lakewide bloom confirmed in Cortland County has been archived.

South/West Watersheds (25 active blooms) draining southwest NYS west to the Ohio River/Mississippi system; and the watersheds draining the south central NYS down to the Atlantic via Chesapeake Bay)

Allegheny River Watershed (16 active) – drains West to the Ohio River.

Chautauqua Lake (14 active)

◆ Aug 8, 11:05 am large localized bloom confirmed in the inlet channel to Chautauqua Lake north of the Fairmount Ave bridge. Reported by Chautauqua Lake Association.

◆ Aug 5, 11:00 am large localized bloom confirmed off W Livingston Ave. Reported by CLA.

◆ Aug 5, 11:06 am large localized bloom confirmed off the south shore, west of Dunham Ave. Reported by CLA.

◆ Aug 5, 11:15 large localized bloom confirmed off shore in the west end of Lucille Ball Memorial Park. Reported by CLA.

◆ Aug 5, 2:10 pm widespread/lakewide bloom confirmed off the south shore near E Summit Ave. Reported by the CLA.

◆ Aug 4, 3:31 pm small localized bloom confirmed off the south shore of the Long Point State Park. This is north of Bemus Point in Chautauqua County. Reported by NYS Parks.

◆ Aug 4, 4:18 pm large localized bloom confirmed off the north shore, lower end of the lake, nearest landmark being Fluvanna Rd. Reported by CLA.

◆ Aug 4, 7:30 pm large localized bloom confirmed off the east end of the County Veterans Memorial Bridge. Reported by the public.

◆ Aug 1, 10:25 am large localized bloom confirmed near the Celoron Ramp. Reported by CLA.

• July 31, 10:08 am small localized bloom confirmed. Reported by NYS Parks Department in Chautauqua County.
• July 31, 12:20 pm widespread/lakewide bloom confirmed off the north shore, in the lower (south-east) end of the lake. Reported by CSLAP.
• July 31, 1:44 pm open water bloom confirmed mid-lake, south of Bemus Point. Reported by CSLAP.
• July 31, 1:44 pm open water bloom confirmed mid-lake. Reported by CSLAP.
• July 28, 3:35 pm large localized bloom confirmed off the south shore around E Summit Ave. Reported by the public.

July 11, two large localized blooms and a widespread bloom confirmed in Chautauqua County, in the south half of the lake have been archived.

July 8, nine large localized blooms and five small localized blooms confirmed around the south half of the lake have been archived.

Three small localized blooms confirmed June 20-22 at the mid-point of the lake have been archived.

Chadokoin River (1 active)

◆ Aug 6, 6:29 pm widespread/lakewide bloom confirmed in Jamestown, Chautauqua County. Reported by the public.

Quaker Lake (1 active)

◆ Aug 4, 2 pm small localized bloom confirmed off the west shore of Quaker Lake, north end, nearest E Perimeter Rd in Cattaraugus County. Reported by NYS Parks Department.

Chemung River (3 active) drains central NYS south to Susquehanna River and out to Chesapeake Bay/Atlantic Ocean.

Tanglewood Lake (0 active)

July 4, small localized bloom confirmed mid-lake in Steuben County has been archived.

Loon Lake (1 active)

◆ Aug 7, 9:07 am widespread/lakewide bloom confirmed mid-lake in Steuben County. Reported by CSLAP.

The large localized bloom confirmed June 25 has been archived. 

A large localized bloom reported June 22 in the centre of the lake has been archived.

Goodhue Lake (0 active)

Widespread/lakewide bloom confirmed June 11 in Steuben County has been archived.

Smith Pond (1 active)

◆ Aug 1, 1:47 pm open water bloom confirmed in Steuben County. Reported by CSLAP.

Jennings Pond (1 active)

◆ Aug 8, 10 am a bloom of unreported extent confirmed in Tompkins County. Reported by NYS Department of Health.

Susquehanna River Watershed (6 active) drains south central New York State flowing southwest, then south, eventually emptying into the Atlantic Ocean at Chesapeake Bay.

Cinncinatus Lake (1 active)

◆ Aug 7, 7:07 pm widespread/lakewide bloom confirmed in Chenango County. Reported by the public.

Otsego Lake (1 active)

◆ Aug 5, 3:20 pm small localized bloom confirmed in Otsego County. Reported by NYS Parks.

Shadow Brook (1 active)

◆ Aug 5, 4:41 pm large localized bloom confirmed in Otsego County. Reported by NYS Parks.

Buckhorn Lake (1 active)

◆ Aug 8, 8:20 am small localized bloom confirmed in Otsego County. Reported by the public.

Oquaga Lake (1 active)

• July 28, 11:33 am small localized bloom confirmed in Broome County remains active this week. Reported by CSLAP.

Yogi and Boo Boo’s Campground Pond (0 active)

July 14 small localized bloom confirmed in Broome County has been archived.

Beaver Lake (1 active)

◆ Aug 7, 10:30 am small localized bloom confirmed in Broome County. Reported by CSLAP.

Earlville Lake (0 active)

July 10, small localized bloom confirmed in Madison County has been archived.

Bradley Brook Reservoir (0 active)

A small localized bloom confirmed on June 29 in Madison County has been archived.

Lake Moraine (0 active)

A small localized bloom confirmed in June in south Madison County has been archived.

De Ruyter Reservoir (0 active)

The bloom confirmed in June in southwest Madison County has been archived.

Ramapo River Watershed (0 active) drains a small section in the southeast part of New York State south through New Jersey and out into the Atlantic Ocean at Chesapeake Bay.