Harmful Algal Bloom Statewide Occurrence Summary: Beginning 2012

data.ny.gov | Last Updated 1 Jul 2019

A summary of the maximum bloom status that was documented by the DEC HABs Program in each waterbody in each year.

Tags: lakes, habs, blue green algae, cyanobacteria

This dataset has the following 12 columns:

Column NameAPI Column NameData TypeDescription
Waterbody Namewaterbody_nametextNYS DEC Waterbody Name
CountycountytextCounty
DEC Regiondec_regiontextRegion 1: Nassau County and Suffolk counties; Region 2: Kings, Bronx, New York, Queens and Richmond Counties; Region 3: Dutchess, Orange, Putnam, Rockland, Sullivan, Ulster and Westchester counties; Region 4: Albany, Columbia, Delaware, Greene, Montgomery, Otsego, Rensselaer, Schenectady and Schoharie counties; Region 5: Clinton, Essex, Franklin, Fulton, Hamilton, Saratoga, Warren and Washington counties; Region 6: Herkimer, Jefferson, Lewis, Oneida and St. Lawrence counties; Region 7: Broome, Cayuga, Chenango, Cortland, Madison, Onondaga, Oswego, Tioga and Tompkins counties; Region 8: Chemung, Genesee, Livingston, Monroe, Ontario, Orleans, Schuyler, Seneca, Steuben, Wayne and Yates counties; Region 9: Allegany, Chautauqua, Cattaraugus, Erie, Niagara and Wyoming counties.
YearyearnumberYear Harmful Algal Bloom Reported
Bloom Typebloom_typetextThe letter codes below refer to maximum bloom status that was documented by the DEC HABs Program in each waterbody in each year. S (Suspicious Bloom): DEC staff determined that conditions fit the description of a cyanobacteria HAB based on visual observations and/or digital photographs; C (Confirmed Bloom): Water sampling results have confirmed the presence of a cyanobacteria HAB which may produce toxins or other harmful compounds; HT (Confirmed with High Toxins Bloom): Water sampling results confirmed that there were toxins present in quantities to potentially cause health effects if people or animals came in contact with the water.
Date of First Listingdate_of_first_listingcalendar_dateDate first listed for that year on the DEC HAB Notification Page see link: https://www.dec.ny.gov/chemical/83310.html for this year’ s Harmful Algal Bloom Notification
Date of Last Listingdate_of_last_listingcalendar_dateDate last listed for that year on DEC HAB Notification list
Number of Weeks on DEC Notification Listnumber_of_weeks_on_dec_notification_listnumberNumber of Weeks Waterbody listed on DEC’s HAB’s Notification list
Number of Weeks with Updatesnumber_of_weeks_with_updatesnumberNumber times type of bloom changed while the waterbody was listed on DEC ‘s HAB Notification list
LatitudelatitudenumberLatitude
LongitudelongitudenumberLongitude
Location 1geocoded_columnlocationOpen Data/Socrata-generated geocoding information from supplied latitude/longitude values.