Algae Problems on the Shenandoah River’s North Fork

Every summer, excessive algae growth, fueled by nutrient pollution and warm temperatures, causes problems for people who spend time on the North Fork of the Shenandoah River. Large mats of filamentous algae become a major nuisance for anglers, paddlers, and people who wade and swim in the river. There are also harmful algal blooms that can produce toxins dangerous to people and pets. Some summers, the Virgina Department of Health has issued advisories warning people to avoid certain stretches of the river. Reducing nutrient pollution is key to addressing the algae problem in the Shenandoah River-and saving the Bay downstream!

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Can you provide a helpful photo of the "blue-green" algae? I'm left a little perplexed by this video-