• Milky Way across Theodore Roosevelt National Park

    Theodore Roosevelt

    National Park North Dakota

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  • Road Construction

    Visitors to the South Unit may experience up to 30 minute delays and rough road conditions due to road construction along East River Road. Construction is expected to be complete by October 1. Check back for updates Updated 08/13/2014 5:16 pm MT

Flood Plains

The Little Missouri River is a prominent feature in all three units of Theodore Roosevelt National Park, and its floodplain is an important feature that contributes to the diversity of habitat, plants, and animals in the park. The sediment-heavy Little Missouri River constantly winds within its banks, slowly changing course over the years. Periodically, the river overflows its banks and onto its floodplain. This periodic flooding has helped trees such as the cottonwood to become established on the floodplain.
North Unit's Little Missouri Floodplain
The Little Missouri River and its floodplain at the North Unit
Mary Brazell, NPS

The cottonwoods on the floodplain provide valuable habitat for other plants and for animals, too. White-tailed deer prefer the heavily wooded habitat of the cottonwood forests. Numerous species of birds are attracted to the forests in the Little Missouri floodplain because of the diverse and abundant food sources and easy access to water. These large forests are home to year-round feathered residents such as black-capped chickadees, white-breasted nuthatches, and great-horned owls, and provide seasonal homes for nesting Baltimore orioles, waxwings, and a variety of warblers. Porcupines and beavers also use the cottonwood trees themselves for cover and food.

The flat, grassy areas on the floodplains also provide grazing opportunities for the park's numerous grazing mammals, including bison, deer, horses, and elk. Prairie dog towns are also located in some areas on the floodplain.

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Did You Know?

One of the largest deposits of petrified wood in the United Sttes is found in the park.

One of the largest deposits of petrified wood in the United States is found in Theodore Roosevelt National Park. More...