Estuary

Updated: 2017-03-27.

In geography, an estuary is a body of water connecting a flowing river and a larger body, such as a sea or ocean. Because it is the transition point, an estuary is subject to both the tides of the sea or ocean as well as the mixture of the fresh water with salt water that happens.

A good example is the New York City region, which sits in an estuary body of water, as the Hudson River drains into the Atlantic Ocean.

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