Make A Lasting Impact for Clean Water & Healthy Communities

Give Today

Our Impact

We strive for clean streams and rivers flowing through resilient landscapes, cared for by the people who live, work, and play in the Chesapeake Bay watershed.

1 million+

Trees planted along local streams and rivers

$10 million

Worth of stormwater management practices installed

141

Farms in the Chesapeake Bay watershed supported

700

Community scientists learned how to monitor water quality

Get Involved

List View | Map View

Indian Rock Nursery Workdays

January 8, 2026

Nursery help wanted! Multiple dates and times available. Read More >

2026 Treelay – Save the Date

March 28, 2026

Join the Alliance as we host back-to-back tree plantings in a relay-style event to get thousands of trees in the ground in just one day. Known as “Treelay,” this event takes place at numerous sites across the Chesapeake Bay watershed, and volunteers plant continuously for one full day. Our 2026 Treelay will take place on ... Read More >

Find even more local events, volunteer opportunities, and job postings on the Chesapeake Network!

Join Our Online Community

Our Work

The Alliance brings together communities, companies, and conservationists to improve our lands and waters.

Forests

Agriculture

Green Infrastructure

Stewardship & Engagement

Latest Blogs

A group of people gathered around a person speaking
Wandering Pennsylvania’s Waterways: Local Government Leaders Building Connections for Clean Water
a large group of people flex their arms in celebration during a clean up event
Vote for the Conestoga for PA’s River of the Year
a mulched garden with various shrubs and trees in it, sunlight in the background
Reduce Your Stormwater: Conservation Landscaping
What’s Poppin’? Phenological Fun: Nodding Ladies’ Tresses & Hill Holly
A small snake held in a person's hand.
The Northern Watersnake: A Chesapeake Companion
Close up of a woolly bear caterpillar sitting on a green leaf.
Can Banded Wooly Bear Caterpillars ACTUALLY Predict Winter Weather?
Rows of people in a lecture hall raise their hands
Celebrating 20 Years of Forum Magic!
A group of people gathered around a person speaking
Wandering Pennsylvania’s Waterways: Local Government Leaders Building Connections for Clean Water
a large group of people flex their arms in celebration during a clean up event
Vote for the Conestoga for PA’s River of the Year
a mulched garden with various shrubs and trees in it, sunlight in the background
Reduce Your Stormwater: Conservation Landscaping
What’s Poppin’? Phenological Fun: Nodding Ladies’ Tresses & Hill Holly
A small snake held in a person's hand.
The Northern Watersnake: A Chesapeake Companion
Close up of a woolly bear caterpillar sitting on a green leaf.
Can Banded Wooly Bear Caterpillars ACTUALLY Predict Winter Weather?
Rows of people in a lecture hall raise their hands
Celebrating 20 Years of Forum Magic!

Make an impact.

For our forests. For our streams. For our future.

Donate Today

Photo courtesy of Chesapeake Bay Program