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HCB-1

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Home About ITRC Navigating this Website Visit HCB-2 Website Interactive Tools
Nutrient Reduction Tool Monitoring Tool Management Criteria Tool Risk
Communication Tool 1. Overview 1. Overview 1.1 Our Goals in Developing This
Guidance 2. Using this Guidance for Cyanobacterial Bloom Response 3.
Introduction to the Cyanobacteria 3. Introduction to the Cyanobacteria 3.1 What
Are Cyanobacteria? 3.2 Health, Environment, and Economic Impacts 3.3
Cyanobacteria Biological Functions and Environmental Interactions 3.4
Understanding Your Water Body and Developing an HCB Management Plan 4.
Monitoring 4. Monitoring 4.1 HCB Monitoring 4.2 Developing a Cyanobacteria
Monitoring Program 4.3 Approaches to Monitoring 4.4 Selecting Appropriate Sample
Collection Methods for Your Lake’s HCB Event 4.5 Water Quality Monitoring to
Support Cyanobacteria Management 4.6 Examples of Recreational and Drinking Water
Monitoring Approaches for Cyanobacteria 5. Strategies for Communication and
Response Planning for HCBs 5. Strategies for Communication and Response Planning
for HCBs 5.1 Immediate Communication and Response Tasks 5.2 Build, Improve, and
Maintain Response Capacity 6. Management and Control Strategies for HCBs 6.
Management and Control Strategies for HCBs 6.1 Summary Table 7. Strategies for
Use in Nutrient Management 7. Strategies for Use in Nutrient Management 7.1
Introduction 7.2 Environmental Regulatory and Nonregulatory/Voluntary Programs
for Nutrient Control 7.3 Source Identification and Prioritization 7.4 Linking
Nutrients to Land Use 7.5 Point Sources 7.6 Nonpoint Sources 7.7 Water Quality
Trading 8. Recommendations 8. Recommendations 8.1 Overall understanding of
cyanobacteria and cyanotoxins and their potential impacts 8.2 HCB Monitoring 8.3
Strategic Communication and Response Planning 8.4 HCB Management and Control
Strategies 8.5 HCB Prevention Through Nutrient Reduction References Appendix
Appendix A. Visual Guide to Common Harmful Cyanobacteria Appendix B. North
American Lake Management Society survey on HCB notification/outreach Appendix C.
Management Strategy Fact Sheets C.1 Management Strategy Fact Sheets C.2 Cost
Compilation for Several Mitigation Strategies C.3 Abridged Strategies Appendix
D. Team Contacts Appendix E. Glossary Appendix F. Acronyms Additional
Information Acknowledgments Document Feedback Navigating this Website ITRC &
Environmental Justice/Diversity Equity & Inclusion

 

Strategies for Preventing and Managing Harmful Cyanobacterial Blooms (HCB-1)

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Source: Wyoming DEQ

Cyanobacteria are microscopic, photosynthetic organisms that can be found
naturally in all aquatic systems. Under certain conditions, cyanobacteria can
multiply and become very abundant, discoloring the water throughout a water body
or accumulating at the surface. These occurrences are known as blooms.
Cyanobacteria may produce potent toxins (cyanotoxins) that pose a threat to
human health. Cyanobacteria can also harm wildlife and domestic animals, aquatic
ecosystems, and local economies by disrupting drinking water systems and source
waters, recreational uses, commercial and recreational fishing, and property
values.

This guidance is focused on strategies that you may use in response to
cyanobacterial blooms that are found in freshwater aquatic environments,
including lakes, streams, rivers, reservoirs, ponds, and freshwater-influenced
estuaries. It is intended to help you select monitoring, excess nutrient
reduction, in-lake management, and communication approaches that may be suitable
for use in your water body. We provide interactive tools to help you explore
options in monitoring, management, and nutrient reduction. Our Visual Guide will
help you recognize cyanobacteria and other common aquatic phenomena that can be
confused with them. 

Together, this information, interactive tools, and embedded resources will help
you respond to and manage for cyanobacteria.

ITRC has created two guidance documents, one focused primarily on planktonic
HCBs, HCB-1, and the other focused primarily on benthic HCBs, HCB-2. While each
document has a primary focus, each document has sections that are applicable to
all HCBs, including several interactive tools. The framework shows how the two
guidance documents are related and where they overlap.


HARMFUL CYANOBACTERIAL BLOOM (HCB) RESOURCE GUIDE

The following guide can be used to assist in navigation between the two ITRC
Harmful Cyanobacterial Bloom (HCB) guidance documents, as well as all other
materials ITRC has published regarding this guidance:

 * HCB Resource Guide

Framework of HCB







































HARMFUL CYANOBACTERIAL BLOOM (HCB) TRAINING

The Harmful Cyanobacterial Bloom team developed an online training to accompany
this guidance.

 * HCB Training Archive

The training video below, Learn to Identify Cyanobacteria Blooms – published
with help from the Lake Champlain Basin Program – identifies and describes
different types of cyanobacteria and offers guidance on best management and
safety practices involving harmful blooms.


Published by the Interstate Technology & Regulatory Council, March 2021

Permission is granted to refer to or quote from this publication with the
customary acknowledgment of the source. The suggested citation for this document
is as follows:

ITRC (Interstate Technology & Regulatory Council). 2021. Strategies for
Preventing and Managing Harmful Cyanobacterial Blooms (HCB-1). Washington, D.C.:
Interstate Technology & Regulatory Council, HCB Team. www.itrcweb.org.

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