In 1902, the park was expanded to cover , encompassing areas around Lake Louise, and the Bow, Red Deer, Kananaskis, and Spray rivers. Bowing to pressure from grazing and logging interests, the size of the park was reduced in 1911 to , eliminating many eastern foothills areas from the park. Park boundaries changed several more times up until 1930, when the area of Banff was fixed at , with the passage of the "National Parks Act". The "Act", which took effect May 30, 1930, also renamed the park "Banff National Park", named for the Canadian Pacific Railway station, which in turn was named after the Banffshire region in Scotland. With the construction of a new east gate in 1933, Alberta transferred to the park. This, along with other minor changes in the park boundaries in 1949, set the area of the park at .