Hudson River Valley Special Resource Study Act - Directs the Secretary of the Interior to commence a study of the Hudson River Valley in the state of New York to evaluate: (1) the national significance of the counties in New York that abut the Hudson River that flows from Rogers Island at Fort Edward to the southernmost boundary of Westchester County, New York (the study area); and (2) the suitability and feasibility of designating the study area as a unit of the National Park System.