November 2020

In this issue

EPA Updates P.1
News P.1
Upcoming Events P.2
Recenty Published Articles P.2
Useful Resources P.2
HABs Advisories P.3-4

Freshwater tfarmful Algal Blooms (HABs)

Newsletter

News

USGS Integrated Water
Science Basin Studies

The U.S. Geological Survey
(USGS) Water Resources
Mission Area (WMA) is planning
to intensively study 10

Integrated Water Science
(IWS) basins throughout the
U.S. over the coming decade.

To date, IWS basin activities
are underway in the Delaware
River Basin and in the Upper
Colorado River Basin. Starting
in 2021, the relationship
between nutrients, associated
HABs, and water availability in
the Illinois River Basin will be
studied.

Over the course of 2021, USGS
will begin broad internal and
external stakeholder
engagement to help develop a
science and monitoring plan
for the Illinois River Basin that
will guide USGS IWS activities
in the basin over the coming
years.

EPA Updates: EPA's Research, Resources, and
Tools on HABs

EPA Sanitary Survey
App

An updated version of EPA's Sanitary Survey App for Fresh and
Marine Waters is available and can be used to identify sources
of fecal pollution in recreational waters. At this time, the app is
only available for use by states, territories and tribes.

The App now includes the ability to gather more detailed Harmful
Algal Bloom information. The update also includes the ability to
monitor fresh waters in addition to marine waters. Additionally,
updates were also made to improve usability. For example, the app
does not require the use of the Internet or WiFi while the user is
out in the field, and survey data can be stored on EPA's
GeoPlatform at no cost.

To improve data collection, the updated app has the following new
functions:

•	Storing photos

•	Geolocating sites where data is collected

•	Linking to websites, such as the National Weather Service, for
weather related information (e.g., rainfall, air temperature)

Click here for more information or email EPA at

EPA SanitarvSurveyApp@epa.gov


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Recently Published Articles*

Oral Microcystin-LR Does Not Cause Hepatotoxicity in Pigs: Is the Risk of Microcystin-LR Overestimated?

Welten, Richard & Meneely, Julie & Chevallier, Olivier & Kosek, Vft & Greer, Brett & Hajslova, Jana & Elliott,
Christopher, 2019, Exposure and Health, December 2, 2019.

Electrocoaqulation/flocculation of cvanobacteria from surface waters

Alejandro de la Fuente, Alicia M. Muro-Pastor, Francisco Merchan, Fernando Madrid, Jose Ignacio Perez-Martinez,
Tomas Undabeytia, Journal of Cleaner Production, Volume 238, 2019, 117964.

Acute toxicity of dihydroanatoxin-a from Microcoleus autumnalis in
comparison to anatoxin-a

Jonathan Puddick, Roel van Ginkel, Carrie D. Page, J. Sam Murray, Hannah E. Greenhough, Joel Bowater, Andrew I.
Selwood, Susanna A. Wood, Mich_ele R. Prinsep, Penelope Truman, Rex Munday, Sarah C. Finch. Chemosphere
263 (2021) 127937.

Manganese-oxidizing bacteria isolated from natural and technical systems remove cylindrospermopsin

Erika Berenice Martinez-Ruiz, Myriel Cooper, Jutta Fastner, Ulrich Szewzyk, Chemosphere, Volume 238, 2020,
124625.

Combined Danio rerio embryo morbidity, mortality and photomotor response assay: A tool for developmental
risk assessment from chronic cvanoHAB exposure

Amber Roegner, Lisa Truong, Chelsea Weirich, Macarena Pfrez-Schirmer, Beatriz Brena, Todd R. Miller, Robert
Tanguay, Science of The Total Environment, Volume 697, 2019, 134210.

Deriving safe short-term chemical exposure values (STEV) for drinking water

Frederic D.L. Leusch, Stuart J. Khan, Daniel Deere, David Cunliffe, Peta A. Neale, Andrew Humpage,

Regulatory Toxicology and Pharmacology, Volume 110, 2020, 104545.

Degradation of cvanotoxin microcvstin-LR in synthetic and natural waters by chemical-free UV/VUV radiation

Pranav Chintalapati, Madjid Mohseni, Journal of Hazardous Materials, Volume 381, 2020, 120921.

Ecotoxicitv assessment of microcvstins from freshwater samples using a bioluminescent cvanobacterial bioassav

Miguel Gonzalez-Pleiter, Samuel Cires, Lars Wormer, Ramsy Agha, Gerardo Pulido-Reyes, Keila Martfn-Betancor, Andreu
Rico, Francisco Leganes, Antonio Quesada, Francisca Fernandez-Pinas, Chemosphere,

Volume 240,2020, 124966.

Articles are retrieved from Science Direct research database searching for the following key words: cyanobacteria, cyanotoxins, harmful algal
blooms, and HAB(s).

resources	PREVENTING AND CONTROLLING CYANOHABs

Useful resources if you are trying to prevent or control

HABs in your area:

Preventative Measures for Cvanobacterial HABs in Surface Water

Control Measures for Cvanobacterial HABs in Surface Water

Algae Mitigation technique Selection Process for Lakes Flowchart, California Water
Quality Monitoring Council

Management Strategies for Cvanobacteria (Blue-Green Algae): A guide for Water Utilities

Report: Solutions for managing cvanobacterial blooms: A scientific summary for policy
makers


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Reported Blooms, Beach Closures and
Health Advisories* - October 2020

* This list is comprised of blooms, cautions, warnings, public health advisories, closings and detections over the
State's threshold, due to the presence of algae, toxins or both. This is not a comprehensive list, and many blooms,
cautions, warnings, public health advisories, closings and detections may have not been reported.

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California (37 CAUTION - Lake Chabot, Lake Temescal, Quarry Lakes, Shadow Cliffs Arroyo, Van Duzen River (Grizzly Creek Campground -
Redwoods State Park), Mad River at Blue Lake, South Fork Eel River, Swimmers Delight, Trinity River mouth, New River near Fig Lagoon,
Gualala River, O'Neill Forebay, San Luis Reservoir, Lake Almanor, Lily Lake, San Jacinto Wildlife Area ponds, Salton Sea, Sacramento River,
Laguna Lake, Meadow Creek, Santa Margarita Lake (Salinas Reservoir), Scott River; WARNING - Red Lake, Big Lagoon, Stone Lagoon, Lake
Henshaw; DANGER - Lake Anza, Lake Del Vaiie, Big Break Regional Shoreline, Contra Loma Reservoir, Klamath River, Lake Isabella, Clear Lake,
Mystic Lake, Big Bear Lake, Copco Reservoir, Iron Gate Reservoir
Florida (2): Lake Anderson, Lake Okeechobee

Idaho (Hi; Brownlee Reservoir, Hells Canyon Reservoir, Fernan Lake, Cedar Creek Reservoir, Thorn Creek Reservoir, Mormon Reservoir, Lake

Lowell, Hordemann Pond, Spring Valley Reservoir, Cascade Reservoir, Round Lake

Kansas (4): WATCH - Hain State Fishing Lake, Horsethief Reservoir, Milford Lake, Roses Pond

Massachusetts (30) Billy Ward Pond, Lake Winnekeag, Charles River, Stiles Pond, Brookline Reservoir, Chilmark Pond, Squibnocket Pond,
Chebacco Pond, Lake Cochituate (South Pond), Lake Warner, Bare Hill Pond, Plunkett Reservoir, Cabot Pond, Santuit Pond, Sassaquin Pond,
Magnolia Pond, Triangle Pond, Nashua River, Big Sandy Pond, Big West Pond, Billington Sea, Clear Pond, Ezekiel Pond, Grassy West Pond,
Halfway Pond, Island Pond, Little West Pond, Merrimack River, Hardy Pond, Lake Peari

Montana (201 CAUTION - Bailey Reservoir, Hauser Lake, Valley West Pond, Beaver Creek Reservoir, Bearpaw Lake, Canyon Ferry, Harrison
Lake, Lake Helena, Valley Grove and Rustler Trail Pond, Clark Canyon Reservoir, Dry Fork Reservoir, Cooney Reservoir, Ennis Lake, Ruby River
Reservoir, Mystic Heights Subdivision pond, Salmon Lake, Nevada Creek Reservoir, Placid Lake; CLOSED - Sundance Spring Subdivision pond,
Hebgen Lake

New Hampshire (21 Tucker Pond, Harvey Lake

New Jersey (4); WATCH - Sylvan Lake; ADVISORY - Manasquan Reservoir; WARNING - Tappan Lake, Spruce Run Reservoir

New York (31): Owasco Lake, Wainscott Pond, Prospect Park Lake, Central Park Lake, Iroquois Lake, Skaneateles Lake, Song Lake, Cayuta Lake,

Mountain Lake, Lake Lacoma, Barger Pond, Seneca Lake, Indian Pond, Dead Lake, Goose Pond, Roaring Brook Lake, Bear Gulch Pond, Agawam

Lake, Truesdaie Lake, Canadaigua Lake, Cayuga Lake, Cannonsville Reservoir, Little Fresh Pond, Quaker Lake, Morningside Lake, Vosburg Pond,

Chenango Lake, Winding Hills Park Lake, Lake Ronkonkoma, Lindsay-Parsons Biodiversity Preserve Lake, Allegheny Reservoir

North Dakota (13 ADVISORY-Antelope Lake, Buffalo Lake, Dead Colt Creek, Devils Lake, Dry Lake, Froelich Dam, Larson Lake, South Golden

Lake, Sweetbriar Lake, Lake Tschida, Wood Lake; WARNING - Homme Dam, Lake LaMoure

Ohio (1): Grand Lake St. Mary's

Oregon (31: South Umpqua River and Lawson Bar, Willow Creek Reservoir, Upper Klamath Lake

Rhode Island (161 Willow Lake, Almy Pond, JL Curran Reservoir, Upper Melville Pond, Barney Pond, Blackamore Pond, Barber Pond, Elm Lake,

Spectacle Pond, Pleasure Lake, Edgewood Lake, Mashapaug Pond, Polo Lake, Roosevelt Lake, Wenscott Reservoir, Lower Melville Pond

South Carolina (2 Lake Whelchel, Lake Wateree

South Dakota (41; Wall Lake, Lake Herman, Waubay Lake, Lake Louise

Utah (1): Virgin River north fork (danger)

Vermont (21: Lake Champlain, Shelburne Pond (low alerts)

Washington (81 Anderson Lake, Blackmans Lake, Cottage Lake, Crescent Lake, Curlew Lake, Lacamas Lake, Palmer Lake, Spanaway Lake
Wyoming (3): Jackson Lake, Gillette Fishing Lake, Huck Finn Pond


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SUMMARY OF HABs-RELATED ADVISORIES POSTED
JANUARY - OCTOBER for 2019 and 2020

The graph below summarizes the monthly state reports of blooms, cautions, warnings, public
health advisories, and closings postings due to the presence of algae, toxins, or both from
January 2019 through October 2020. Blooms and advisories for most months in 2019 are
published on EPA's CvanoHABs Freshwater Newsletters 2019 webpage.

Number of Blooms and/or Advisories Reported
Monthly from January 2019 through October 2020

CO
SJ
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CO

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FEBRUARY

MARCH

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MAY

JUNE

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JULY

AUGUST

SEPTEMBER OCTOBER

¦ 2019 H2020

Look for our new format in 2021! Future
information on HABs will be included in a new
quarterly newsletter providing highlights from
the Office of Science and Technology within
EPA's Office of Water.

Mention of trade names, products, or services in
this newsletter does not convey and should not be
interpreted as conveying official EPA endorsement,
approval, or recommendation for use.


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