An oxbow lake forms when a curve, or meander, in a river pinches shut. The river follows a new, shorter course and a lake forms beside the river. More »

Lakes form due to receding glaciers, plate tectonics, volcanism, meandering rivers, landslides and human damming. Most of the natural lakes in North America formed due to glaciers receding from the last ice age 18,000 ye... More »

The formation of the Great Lakes, which are also known as the Laurentian Great Lakes, began around 2 billion years ago after the forming of North American mountain systems and their subsequent erosion caused depressions ... More »

The loop curve in a river or stream is called a meander. These twists and turns form over time and can completely change the shape and direction of the river. More »

The Eiffel Tower stands on an oxbow beside the River Seine in Paris, France. The reason for its placement was due to it being the centerpiece of the 1889 World's Fair, which took place in the same region. More »

A river delta forms by the deposition of sediments from the river when it slows to join a larger body of water. Relatively fast-moving rivers can carry huge amounts of sediment eroded from their banks, with the speed of ... More »

A meander forms when erosion wears away the outer bank of a river and sediment accumulates against its inner bank. Silt deposition during meander formation actually raises a river above the level of its floodplain. More »