Our Work

Local Feedback, Collective Impact: How Community Leaders are Guiding the Chesapeake Bay’s Future

When it comes to clean water, diverse communities require diverse solutions. Spanning more than 64,000 square miles across six states and the District of Columbia, the Chesapeake Bay watershed is home to roughly 1,800 local governments. At this vast scale, there is no one-size-fits-all approach to achieving clean water.

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An overhead view of a line of people carrying buckets and smiling

4,000+ Trees For Pennsylvania this Fall

Come get your hands dirty and join in on the reforestation effort for Pennsylvania’s streams! We have over 4,000 trees to plant – all we need is you!

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A group of volunteers pose in front of the Crooked Branch Ravine Park sign with their trash bags.

Project Clean Stream Kicks-off the Fall Season Collecting 2,850 Pounds of Trash!

In recognition of the National Day of Service on Wednesday, September 11, The Alliance kicked off the fall 2024 Project Clean Stream season in Pennsylvania, Annapolis, Washington, DC, and Virginia!

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What’s Poppin’? Phenological Fun: Wingstem

Keep an eye out for wingstem (also called yellow ironweed) as the summer wraps up!

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A close up of a black and white disk over water

Below the Surface of Monitoring: Water Clarity

Water clarity is instrumental in determining the health of the Chesapeake Bay, and has an unquantifiable impact. For one, aquatic organisms rely on light for photosynthesis, especially at depths. When light is limited, food chains are affected from the bottom-up. In addition, some fauna rely on light to see prey and navigate.

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A young volunteer smiles and holds up a grill lid

Project Clean Stream: Spring Recap

Every year, Project Clean Stream (PCS) hosts several trash pickups, drawing tens of thousands of volunteers to come together with the common goal of cleaning up and promoting the health and restoration of their local waterways.

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a closeup of fluffy seeds been blown by the wind

Achenes and Samaras and Nuts, Oh My!

With autumn just around the corner, a shift is occurring in the reproductive stage of trees – the unique flowers that have consumed spring and summer are becoming seeds!

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A closeup of a yellowish plant with purple tips

What’s Poppin’? Phenological Fun: Autumn Coralroot

Commonly called autumn coralroot, this unique orchid is one of 11 other species of terrestrial orchids and is native to the eastern and central U.S. as well as some parts of Canada and Mexico.

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Happy Graduation to a Riparian Rangers Buffer

It was recently graduation day in Manheim, and students are eager to embark on the next phase of their lives. Downstream, a different graduation is going on for two and a quarter acres of trees.

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Vertical structures of oysters growing next to water

Below the Surface of Monitoring: pH

Like water temperature and dissolved oxygen concentration, pH is an essential parameter in assessing habitat suitability for aquatic life. This is because pH determines the solubility and availability of nutrients and minerals for the survival of a species.

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