Contact Us
- Phone: 303-444-2950
- Email: co_info@tnc.org
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Colorado Gives Day
Colorado Gives Day is the best day to give, making it easy for Coloradans to lift their communities with both joy and generosity that is felt in neighborhoods.
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Colorado Gives
Campaign
Colorado Gives Day
Every acre, every river mile, and every species protected begins with you. Give where you live this season and help us protect our planet for future generations. Colorado Gives Day is December 10 but you can give early starting on November 1.
Our Work in Colorado
We Can’t Save Nature Without You
Sign up to receive monthly conservation updates and how you can get involved. Get a preview of Colorado's Nature News email
Great Sand Dunes National Park
A complex set of real estate transactions by TNC led to the designation of the Great Sand Dunes National Park in Colorado.
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Nick Hall
See the Places We Protect in Your Community
With your help, The Nature Conservancy in Colorado has helped protect more than 1 million acres and improve more than 1,000 river miles across the state.