High angle view of Missouri River, Montana, USA

River flowing through mountains, Flathead River, Montana, USA

Reflection of trees in water, Flathead River, Montana, USA

Reflection of trees in water, Flathead River, Montana, USA

Reflection of trees in water, Flathead River, Montana, USA

Reflection of trees in water, Flathead River, Montana, USA

Reflection of trees in water, Flathead River, Montana, USA

Two men camping at the riverside, Montana, USA

Stream flowing through rocks, Cossatot Falls, Arkansas, USA

Stream flowing through rocks, Cossatot Falls, Arkansas, USA

Stream flowing through rocks, North Carolina, USA

Stream flowing through rocks, North Carolina, USA

River flowing through mountains, Maroon Bells, Aspen, Colorado, USA

Stream flowing through rocks, Cossatot Falls, Arkansas, USA

River flowing through mountains, Iceland

Stream passing through a forest, Jasper National Park, Alberta, Canada

Stream flowing through a forest, Brandywine River Museum, Hagley Museum and Library, Wilmington, Delaware, USA

River flowing through a forest, Slide Rock State Park, Sedona, Oak Creek, Arizona, USA

River flowing through a forest with mountain in the background, Athabasca River, Pyramid Mountain, Jasper National Park, Alberta, Canada

River passing through a forest, North Saskatchewan River, Banff National Park, Alberta, Canada

River flowing through mountains, Flathead River, Montana, USA