RCPs whose members collaborate on land stewardship projects include:
- Great Bay Resource Protection Partnership
- High Peaks Initiative
- Hudson to Housatonic RCP
- Kennebec Woodland Partnership
- Litchfield Hills Greenprint Collaborative
- Lower CT River and Coastal Region Land Trust Exchange
- Metro West Conservation Alliance
- Newfound Land Conservation Partnership
- Rhode Island Woodland Partnership
- Staying Connected Initiative
- Thames River Basin Partnership
