Our Latest Tweets

  • Let ’s celebrate the Delaware River Watershed! 15 million people rely on it for drinking water, which is about 5% o…
  • Celebrating #WorldWaterDay, OSI's Focus on Water enews features some of our projects and examines the latest scien…
  • RT @PTNY: Congrats to the 22 organizations dedicated to the stewardship and promotion of NYS parks, historic sites and public lands that we…
  • @OpenSpaceInst
See Newsletters

What You Can Do

Donate to support OSI’s work

Become a part of our mission to safeguard at-risk places through your tax-deductible gift.


Subscribe to our newsletter

We get in touch once a month with our most important news, stories, and updates.

Please leave this field empty