General Information

Event name: US-17-026
Nature of the harmful event:
Water Discoloration , Other ( neurotoxin production)
Event directly affected:
Toxicity detected: Yes
Associated syndrome: OTHER
Unexplained toxicity:
Species implicated in toxin transmission (transvector): Northeast River, trib to the Chesapeake Bay had Cuspidothrix (formerly Aphanizomenon) issatschenkoi on 6/15/17. Anatoxin was 6.2ug/L
Report the outcome of a monitoring programme: Yes (Maryland Phytoplankton Monitoring Program)
Event occurred before in this location: No
Individuals to contact: WAZNIAK, Cathy

Location & Date

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Location: Latitude: 39.569722, Longitude: -75.959722
General location information: Northeast River, Chesapeake Bay,
HAB Area code(s): US-10
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd): First detection: 2017-06-15, End: 2017-06-18
Additional date-related information: Large rainstorm washed out the bloom


Causative organism known: No
Causative Species/Genus:
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information:
Created at 10:54 on 23 Apr 2018