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United States

The Nature Conservancy in Maryland / DC

A tiger swallowtail butterfly sits on a purple coneflower.
Eastern tiger swallowtail Eastern Tiger Swallowtail (Papilio glaucus) butterfly on Purple Coneflower (Echinacea purpurea) © Kent Mason

Make a Difference in Maryland and DC

From Western Maryland's Central Appalachian forests to our nation's capital and beyond to the Chesapeake Bay, we're working to deliver large-scale, science-based conservation solutions for both people and nature.

Donate to Our Chapter Why Donate to TNC?

Our Priorities

Learn more about our conservation efforts across the region.

Our Stories

A small blue and white songbird perches on a thin branch.

Migration Marvels of the Appalachians

Sep 22, 2025

The sun sets over the Pocomoke River, creating bright hues of purple and orange in the sky and reflecting along the water. A wooden dock sits to the right of the river.

The Pocomoke River: A Wild & Scenic Connector of Nature and Community Across Delmarva

Two gloved hands work through a large pile of oysters on a table.

SOAR Program Purchases Oysters from Growers for Reef Restoration

Jul 14, 2025

An aerial view of the Chesapeake Bay in Virginia.

The Chesapeake Bay: TNC’s Newest Global Foodscape

An aerial view of a machine moving mud in a coastal marsh.

TNC Releases “Sediment Strategies” Report Outlining How to Recycle Dredged Sediment

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Upcoming Events

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Low-intensity fire moves up a wooded slope as seven members of a TNC crew monitor the fire line during a controlled burn.

Working with Fire in Maryland

Returning fire to the landscape through controlled burns to keep Maryland’s forests and wetlands healthy.

Learn More
Group of people posing for a photo with a monument in the background.
Maryland/DC Staff Picture Group picture of Maryland/DC Staff © TNC/Morgan Johnson © Morgan Johnson/TNC

Our Staff: Experts in Action

Our world faces complex conservation challenges. Meet some of the people who are working to create lasting solutions.

Our Staff
A father plants a tree with his young daughter.

Volunteer in Maryland/DC

Connect with nature and help make a difference in Maryland and DC.

Learn More
An aerial view of the City of Baltimore.
Baltimore coastal resilience Aerial view of Curtis Bay in South Baltimore. © Yazan Aboushi © Yazan Aboushi

Conservation News

Explore conservation highlights from across Maryland and DC as featured in Nature Conservancy magazine's Spring 2026 issue.

Download
A report cover with the title 2025 Annual Impact Report features a person walking through a forest at sunrise.
Maryland 2025 Annual Report 2025 Annual Report Cover © TNC

Impact Report

Thanks to your support, we accomplished so much in 2025. We look forward to doing more throughout the year to come!

Impact Report
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