Missisquoi and Trout Rivers Wild and Scenic River Study Act of 2009 - Amends the Wild and Scenic Rivers Act to designate a specified segment of the Missisquoi and Trout Rivers in Vermont for study for potential addition to the National Wild and Scenic Rivers System.
Directs the Secretary of the Interior to: (1) analyze any potential impacts on the possession or use of a weapon, trap, or net, including a concealed weapon, on the Missisquoi and Trout Rivers or on lands adjacent to that area; (2) include in the study an assessment of any effect a wild and scenic designation in the study area is likely to have on energy production, transmission, or conveyance; and (3) analyze the potential impact of the designation on private lands within the Rivers or adjacent to that area.