Algae blooms turn Lincoln Memorial Reflecting Pool green shortly after renovation
By
Mack Baysinger
Summary
The Lincoln Memorial Reflecting Pool in Washington, D.C. turned a phosphorescent green shortly after the Trump administration completed millions of dollars in renovations intended to make it crystal clear. The discoloration is caused by algae growth, which thrives in the pool's calm, still waters. The algae are fueled by nitrogen and phosphorus from the Potomac River, which feeds the pool and carries heavy nutrient loads from urban and agricultural runoff, as well as from one of the largest sewage spills in U.S. history.
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Key quotes
· 3 pulledThe calm, still waters of the Reflecting Pool make it an ideal nursery for algae growth.
Algae need nitrogen and phosphorus to grow, and the Reflecting Pool is primarily fed by the Potomac River, which gets heavy doses of those nutrients from nearby urban and agricultural lands.
The Potomac also absorbed one of the largest sewage spills in U.S. history...
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