The Executive Committee of the Nisqually River Council is composed of one member selected by each of the following organizations. Each member organization may designate an alternate.
- Lewis County Board of Commissioners
- Pierce County Council
- Thurston County Board of Commissioners
- Washington State Department of Wildlife
- Washington State Parks and Recreation Commission
- Washington State Department of Natural Resources
- Nisqually River Citizens Advisory Committee
- Nisqually Tribal Council
