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U.S. Domestic1d 18h ago
The Lincoln Memorial reflecting pool turned green due to algae blooms after being refilled and repainted "American flag blue" earlier this month.
Washington, D.C.
Who
Trump administration, Secretary of the Interior Doug Burgum, National Park Service, Interior Department, Steve Goodale, Rosalina Stancheva Christova, Taylor Rogers
What
The Lincoln Memorial reflecting pool turned green due to algae blooms after being refilled and repainted "American flag blue" earlier this month.
When
Fri, 19 Jun 2026 15:43:05 GMT · 1d 18h ago
Where
Washington, D.C. ·
Why
Algae growth is attributed to "New Pond Syndrome," shallow stagnant water, strong sunlight, lack of shade, and acceleration by recent renovation's disturbance of nutrient balance and the new darker surface absorbing more sunlight, exacerbated by extreme temperatures.
The Frontline Impact
How this affects you
The algae bloom necessitates mitigation strategies including hydrogen peroxide and "nanobubble ozone technology," with crews vacuuming dead algae, indicating ongoing maintenance challenges and significant costs for the multi-million dollar renovation project.
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