Blue Coating Peels Off During National Park Algae Cleanup
National Park Service crews are attempting to remove bright green algae from the water, but the cleanup effort has uncovered a secondary issue where an “American flag blue” coating is peeling away, according to reports.
Why is the coating coming off?
The loss of the “American flag blue” coating developed as a concurrent problem while crews worked to address the algae. This biological growth had previously turned the water a bright green color.
What may happen next?
National Park Service crews may need to evaluate the cause of the coating failure once the algae is cleared. A possible next step could involve determining if the algae contributed to the peeling or if the “American flag blue” layer requires a full replacement.
Frequently Asked Questions
What caused the water to turn bright green?
The water turned bright green due to algae, according to reports.

Who is responsible for the cleanup?
National Park Service crews are handling the removal of the algae.
What is the new problem affecting the site?
An “American flag blue” coating is coming off the surface.
Do you think environmental factors or material age are more likely to cause such coating failures in national parks?