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Where We Work

United States

A landscape view of a valley, with steep red canyon wall.
Aravaipa Canyon Aravaipa Canyon Preserve in Arizona. © Justin Bailie

TNC works across all 50 states to conserve the lands and waters on which life depends.

A leading conservation organization in the United States and around the world, TNC works with public and private partners to ensure our lands and waters are protected for future generations.

Stand Up for Nature Take Action Now

North America Priority Landscapes

Learn about these important areas for conservation work that crosses political boundaries.

U.S. Stories

A massive tree with a twisted trunk casts shade over a man and woman walking.

Rooted in Restoration: An Opportunity to Build Back Montezuma Cypress

A love letter to the Montezuma cypress, the iconic national tree of Mexico, and its return to Texas.

Small white-bellied chorus frog perched between two wetland reeds.

Wonderfully Wild: Why Midwest Wetlands Matter for Wildlife, Water and Climate

Discover the wickedly cool wildlife thriving in Midwest wetlands, why these habitats matter for clean water, flood resilience and climate, and how TNC is helping protect and restore them.

Photo of a brushy meadow in foreground, with sunlit, snow-capped mountains in the background and light clouds above in Washington's Tunk Creek Valley.

Significant Washington Land Returned to the Colville Tribe, Its Original Stewards

In October 2021, the 9,243-acre Figlenski Ranch in Okanogan County was returned to its original stewards, the Confederated Tribes of the Colville Reservation. Here's the remarkable story.

By Owen L. Oliver

Couple, holding hands, walks on a gravel path surrounded by greenery, with a brick house in the background.

Seeking Higher Ground

First-of-its-kind project helps Staten Island residents choose a safer future.

By Kate Frazer