Organization Overview

For 63 years, the Natural Land Institute has helped residents of northern Illinois conserve the land they cherish. We are one of the oldest private conservation groups in the Midwest.

We are a member supported, nonprofit organization dedicated to preserving land and natural diversity for future generations. Since 1958, NLI has protected, managed, and restored 18,000 acres throughout Illinois and southern Wisconsin. These include prairies, forests, wetlands, and river corridors.

Serving as a regional land trust, the Institute accepts donations of properties, buys lands, manages natural areas, and helps landowners establish legal agreements that permanently limit harmful use and development.

Our Mission

The mission of the Natural Land Institute is to create an enduring legacy of natural land in northern Illinois for people, plants, and animals.

We are living at the time of man’s final conquest over the wilderness. What we have saved, and what we may save in the next few years, will be all the true wild nature that will remain to pass on from generation to generation in the years ahead. There will never be another chance.George B. Fell, founder of the Natural Land Institute

The role of Natural Land Institute (NLI) includes both advocacy for land preservation and land use planning and direct action to preserve areas by acquisition, either on its own or in conjunction with other organizations and agencies

We need your help to fulfill our vision for the future – a world in which people recognize that we are a part of nature and act with the knowledge that our future depends upon preserving the natural systems that support all life on Earth.

The Natural Land Institute’s programs include five main categories:

  • Acquiring and protecting natural areas.
  • Managing, protecting, and restoring natural areas and native species.
  • Conducting research and managing information.
  • Disseminating information about land and nature conservation.
  • Developing sound public policies and plans.

Our History

George B. Fell founded the Natural Land Institute in 1958 and served as Executive Director until his death in 1994. George’s dedication to the preservation of natural areas continues to inspire the programs of NLI.

George created a land conservation movement that has protected the wonderful diversity of native plants and animals and the beautiful tapestry of life that we enjoy. Supporters and staff of the Natural Land Institute have sustained his important work of protecting the forests, rivers and wetlands that are threatened throughout northern Illinois.

NLI has negotiated the acquisition of more than 100 tracts of land totaling 18,000 acres. A few of these areas include Harlem Hills Nature Preserve, Rockton Nature Preserve, Sugar River tracts, Nachusa Grasslands, Markham Prairie, Franklin Creek State Natural Area, Matthiessen State Park, Briggs Wetland, Apple River Canyon and the Castle Rock area.

NLI currently owns and manages 26 preserves totaling 3,156.74 acres and holds 49 conservation easements on 3,814.15 acres.

Most Recent 990 and Audit

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