This map shows the major North American drainage basins, or watersheds, which drain into the Atlantic Ocean, Hudson Bay, the Arctic Ocean, the Pacific Ocean, the Gulf of Mexico, and the Caribbean Sea. Each watershed is shown in its own color, with subdivisions shown in tonal variations. Areas of internal drainage, which lack outlets to the sea, are shown in gray.

North American Watersheds
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Alex E

“Maps are like campfires – everyone gathers around them, because they allow people to understand complex issues at a glance, and find agreement about how to help the land.”