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United States

Oklahoma

A scrubby landscape and hills lay under the emerging stars as the sun sets at Black Mesa State Park and Nature Preserve.
Under the Night Sky Black Mesa State Park and Nature Preserve is one of only a few dark sky parks in Oklahoma. © Going West Productions
Oklahoma's 40 year anniversay logo.
Celebrating 40 Years Oklahoma's 40-year anniversary logo. © TNC

Celebrating a Legacy of Conservation Across Oklahoma

Since 1986, The Nature Conservancy has helped protect nearly 140,000 acres across Oklahoma. From prairies and forests to rivers and wildlife, four decades of science, stewardship and partnership have helped care for the places that make Oklahoma special and build a lasting foundation for the future.

Explore 40 years of conservation in Oklahoma.

We've moved!

Please find The Nature Conservancy in Oklahoma at our new address: 5555 East 71st Street, Suite 9100 Tulsa, Oklahoma 74136.

Make a Difference in Oklahoma

The Nature Conservancy's mission is to preserve plants, animals and natural communities that represent the diversity of life on Earth by protecting the lands and waters they need to survive. We’ve been working in Oklahoma to do just that.

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Two male bison lock horns in a display of dominance.

Joseph H. Williams Tallgrass Prairie Preserve Featured on PBS NATURE

Witness the impact of collaborative conservation in a powerful edition of NATURE on PBS, filmed in the Osage Nation and featuring commentary from Tallgrass Initiative Director Bob Hamilton.

Full Episode
Fog rolls over dense, green forest.

Oklahoma Legacy Club Visits Pearl Jackson Crosstimbers Preserve

We were honored to welcome a group of Legacy Club donors to Pearl Jackson Crosstimbers Preserve for a day of exploration and community in the great outdoors.

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A creek winds across rolling hills, dotted by trees. A blue sky can be seen in the distance.

Introducing Sand Creek Ranch

The Nature Conservancy in Oklahoma has acquired Sand Creek Ranch, a 5,000-acre property located in the Red Hills of Harper County.

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Conservation in Oklahoma

Rolling hills frame a tree-lined canyon at Four Canyon Preserve.

20 Years of Conservation at Four Canyon Preserve

Explore twenty years of conservation in action at Western Oklahoma's Four Canyon Preserve with Preserve Manager Chris Hise.

The cabin of John Joseph Mathews frames the Pawhuska night sky.

Historic Mathews Cabin

The cabin of famed Osage author John Joseph Mathews now sits on the Joseph H. Williams Tallgrass Prairie Preserve protecting history for future generations.

The sun rises over TNC's Pearl Jackson Crosstimbers Preserve, located near Tulsa.

Pearl Jackson Crosstimbers Preserve

The Pearl Jackson Crosstimbers Preserve, located near Sapulpa, is a pristine specimen of the crosstimbers ecoregion, featuring open tallgrass prairie and woodlands of post and blackjack oak.

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Hikers walking along a ridge at the Four Canyon Preserve.
Hiking at Four Canyon Preserve Hikers at Four Canyon Preserve © Ryan White Photography
Oklahoma Impact Report Cover Image.
2025 Oklahoma Impact Report

There's more to explore! Download the full report to see conservation successes from the past year.

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