The St. Louis River watershed, which covers 3,584 square miles, is located at the head of the Great Lakes and represents the extreme headwaters of the St. Lawrence River.
A watershed is a geographic area of land across which water, and the sediments and dissolved materials it contains, flow on their way to a single common outlet -- a stream, lake or river.
What is a watershed? How water flows across a region’s surface affects many aspects of the landscape. A watershed is the area of land that drains into a body of water.
A watershed is an area of land draining to a river or stream. It includes rivers, streams, lakes and wetlands. Everyone lives in a watershed and everyone contributes to the health of the watershed.