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When Green is Not Good:
Nuisance and Harmful Algae in the Shenandoah River Watershed


What: Lecture presentation with Q&A

How long is it? 1 hr. 20 minutes

When it was held: March 14, 2023

Where: Wayne Theatre, 521 W Main Street, Waynesboro,




Tara L. Wyrick, Regional Water Monitoring and Assessments Manager, Valley Regional Office, Virginia Department of Environmental Quality (DEQ) and Morgan Steffen, PhD, Associate Professor, James Madison University, Department of Biology


Our speakers discussed differences and identification clues between “nuisance” algae and “harmful” algae that occur in rivers of the Shenandoah River watershed. DEQ  reviewed the last six years of nuisance algae monitoring efforts. Dr. Steffen explored how harmful algal blooms (HABs) are hazardous to humans, pets, and livestock. Both speakers also discussed how to report suspected algal blooms to authorities for further investigation.


The Wayne Theatre, the Virginia Museum of Natural History and the Center for Coldwaters Restoration are working in conjunction with

the Friends of the Middle River and the Friends of the Shenandoah River to bring you this lecture.


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