National Forest Foundation | 48,322 followers on LinkedIn. The NFF promotes the health and public enjoyment of our 193-million-acre National Forest System. | The NFF works with communities and organizations to conserve and enhance the watersheds, wildlife habitat and wild places across our 193-million-acre National Forest System. Mission The National Forest Foundation (NFF), chartered by Congress, engages Americans in community-based and national programs that promote the health and public enjoyment of the 193-million-acre National Forest System, and administers private gifts of funds and land for the benefit of the National Forests. Our Values Our National Forests and Grasslands are at the core of America's natural riches, and yet, today these treasures are threatened by unprecedented challenges.