In the year 2012, the George & Miriam Martin Foundation encouraged the preservation of rivers and watersheds by making grants to the following organizations:
- American Chestnut Foundation,
- American Farmland Trust,
- American Rivers, $5,000
- American Whitewater, $2,500
- Appalachian Mountain Club,
- Audubon Pennsylvania,
- Audubon South Carolina,
- Beacon Institute,
- Brandywine Conservancy,
- Camp Hill School, $4,000
- Center for Biological Diversity,
- Clean Water Fund,
- Damascus Citizens,
- Deerfield River,
- Delaware Riverkeeper, $50,000
- Ding Darling Wildlife Society, $15,000
- EarthJustice, $150,000
- El Porvenir,
- Ellis School,
- French and Pickering Creek Conservation Trust, $25,000
- Friends of Blackwater Canyon,
- Friends of the River,
- Green Valleys Association,
- Horseshoe Trail Conservancy, $5,000
- Intervale Center,
- Izaak Walton League of America,
- Keystone Trails Association,
- Natural Lands Trust,
- Nature Conservancy of Pennsylvania,
- Northeast Wilderness Trust,
- PA Environmental Council, $20,000
- PEER, $1,000
- Pennypack Ecological Preservation,
- Potomac Conservancy,
- Rails to Trails Conservancy,
- Reclam the Bay, $10,000
- River Network, $1,000
- Sanibel-Captiva Conservation, $5,000
- Schuykill River Greenway Association,
- Student Conservation Association, $1,000
- Tookany Tacony-Frankford Watershed,
- Trout Unlimited, $5,000
- West Virginia Rivers Coalition, $2,000
- WildEarth Guardians, $5,000
- Wildlands Conservancy, $2,000
Total for 2012 = $308,500