Hudson-Fulton-Champlain Quadricentennial Commemoration Commission Act of 2007 - (Sec. 4) Establishes: (1) the Champlain Quadricentennial Commemoration Commission to plan, develop, and execute programs and activities to commemorate the 400th anniversary of the voyage of Samuel de Champlain (the first European to discover and explore Lake Champlain); and (2) the Hudson-Fulton 400th Commemoration Commission to plan, develop, and execute programs and activities to commemorate the 400th anniversary of the voyage of Henry Hudson (the first European to sail up the Hudson River) and the 200th anniversary of the voyage of Robert Fulton (the first person to use steam navigation on a commercial basis).
(Sec. 6) Sets forth requirements regarding Commission meetings, including a requirement for such meetings at least twice annually or at the call of the Chairperson or majority of Commission members.
(Sec. 7) Sets forth Commission powers. Prohibits the Commissions from purchasing real estate.
Authorizes the Commissions to make grants not to exceed $20,000 to: (1) communities, nonprofit organizations, and state commemorative commissions to develop programs to assist in the Champlain and Hudson-Fulton commemorations; and (2) research and scholarly organizations to research, publish, or distribute information relating to the early history of the voyages of Samuel de Champlain, Henry Hudson, and Robert Fulton.
Directs the Champlain Commission to coordinate and consult with the Lake Champlain Basin Program to provide grants and technical assistance for the development of activities commemorating the voyage of Samuel de Champlain.
(Sec. 8) Authorizes the Commissions to accept the services of, and provide reimbursement for, personnel detailed from New York or Vermont and the Lake Champlain Basin Program.
(Sec. 9) Requires the Commissions to report to the Secretary by September 30, 2010, regarding their activities, funds received and expended, and their findings and recommendations.
(Sec. 10) Terminates the Commissions on December 31, 2010.
(Sec. 11) Authorizes appropriations.