Everything about The Prairie Pothole Region totally explained
The
Prairie Pothole Region (PPR) is an area of the northern
Great Plains and midgrass and tallgrass
prairies that contains thousands of shallow wetlands known as
potholes. These potholes are the result of
glacier activity in the
Wisconsin glaciation, which ended approximately 10,000 years ago. The decaying ice sheet left behind depressions formed by the uneven deposition of
till in
ground moraines, and melting ice blocks which created
kettle lakes. These depressions filled with water, creating the potholes.
More than half of the potholes have been drained and converted to agriculture. Pothole loss is 90% or more in places. Those potholes that remain are important habitats for migratory waterfowl and other wildlife, supporting more than 50% of North America's migratory waterfowl.
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