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US Army Corps of Engineers
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Results:
Tag:
algal blooms
Clear
10
Jul 2025
Blue Marsh Lake - Harmful Algal Bloom Status Update – Advisory to Warning & Closures
The U.S. Army Corps of Engineers Philadelphia District is advising Blue Marsh Lake visitors to be aware of the presence of extremely high levels of blue-green algae in the lake and the potential for harmful toxins to be present.