In 1972, what was preserved as the nation's first National River?

The Buffalo National River was designated as the nation's first National River in 1972, marking a significant event in the realm of conservation and environmental preservation in the United States. This designation was part of a broader movement to protect natural waterways and promote outdoor recreation while preserving the unique ecological and cultural qualities of these areas.

Establishing the Buffalo National River as a National River reflects the growing recognition during that era of the importance of safeguarding natural landscapes from development and pollution. The river has become a vital resource for recreation, education, and natural beauty, attracting visitors for activities such as canoeing, hiking, and wildlife observation.

The other rivers mentioned have their own significance but were not designated as National Rivers in 1972. The Missouri River, for example, is one of the longest rivers in North America with a complex ecosystem, but it does not hold the same designation as the Buffalo. The Snake River is renowned for its fishing and whitewater rafting, while the Colorado River is famous for carving out the Grand Canyon, but neither was bestowed with the National River status that year. Thus, the Buffalo National River stands out as a pivotal landmark in the preservation movement in the United States.