• Recreational and Sporting Camps (Day, Overnight, etc.)

• 577.

The LINDA LORING NATURE FOUNDATION INC

To preserve the biological diversity of its 275 acre property on Nantucket and to connect people of all ages to nature through environmental education and research.

• Water Resource, Wetlands Conservation & Management

• 578.

Watershed Center

The Watershed Center was established in 1994 by a group of local citizens committed to conservation and education on local lands.

• Parks and Playgrounds

• 579.

The San Diego River Park Foundation

A nonprofit dedicated to creating a better future for the San Diego River.

• Museums & Museum Activities

• 580.

Flint River Quarium Inc

Inspiring appreciation and conservation of the Flint River Explore the Flint River watershed and learn about its unique ecosystems at Flint RiverQuarium CONSERVATION AND EDUCATION.

Mountain Watershed Association

Protecting your right to swim, drink and fish the Youghiogheny River.

• Natural Resource Conservation and Protection

• 582.

Tuolumne River Conservancy Inc

RESTORATION, PRESERVATION, ADVOCACY ALONG THE LOWER TUOLUMNE RIVER, STANISLAUS COUNTY, CALIFORNIA.

• Community Improvement, Capacity Building N.E.C.

• 583.

THE WATERSHED CENTER INC

a retreat center for changemakers Watershed has been a home to groups and organizations working toward positive social change since 2014.

• Water Resource, Wetlands Conservation & Management

• 584.

Tri-State Watershed Alliance Inc

The mission of the Maumee Watershed Alliance is to sustain healthy watersheds that support thriving communities and strong economies.

• Water Resource, Wetlands Conservation & Management

• 585.

HOWARD T ODUM FLORIDA SPRINGS INSTITUTE

Working to protect Florida's springs through sound science and education.