Theodore Roosevelt Island

Theodore Roosevelt

Emerald ash borer (EAB) has killed most of the 300,000 ash trees in National Capital Region parks since 2014. Fewer than 80,000 living ash trees remain. Some ash-dominated swamps transformed into shrublands as ash root systems re-sprouted after EAB attack. In dry habitats, EAB proved more quickly fatal.

Emerald ash borer are still decimating ash trees in the National Capital Region. Read on for the latest look into the state of ash trees in our parks based on forest monitoring data.

American beech (Fagus grandifolia), the most common tree species in National Capital Area parks, is currently facing the emerging threat of Beech Leaf Disease (BLD).

Learn about the Brood X periodical cicadas that emerged in 2021 throughout the Mid-Atlantic U.S.

The Civil War showed the cracks in the loosely held peace between the North and South. As the end of slavery through the Emancipation Proclamation established a reason for African Americans to join the fight, the stage was set for African American men to fight for their own freedom and rights as citizens of America.

For an urban bike expedition in D.C., visit the Mount Vernon Trail! Plan ahead for many stops along the way to fully immerse yourself in the nation’s rich history!

Climate change has had a profound effect on the weather. In areas like DC which have been historically wet, changes in atmospheric temperature can lead to more severe storms and greater precipitation. Combined, these factors fuel other extreme weather events like flooding or landslides.

What is the future of our forests? A look at forest regeneration capacity in National Capital Area national parks based on 2020 monitoring data.