<Table> <Tr> <Td_colspan="2"> Watersheds of North America </Td> </Tr> <Tr> <Td_colspan="2"> landforms </Td> </Tr> <Tr> <Td_colspan="2"> The primary watersheds of North America include the Arctic Watershed (blue), the Atlantic Watershed, and the Pacific Watershed; which do not include endorheic basins such as the Great Basin . </Td> </Tr> <Tr> <Th> Countries </Th> <Td> Greenland, Canada, United States, Mexico Central America and island countries </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> </Table> <Tr> <Td_colspan="2"> Watersheds of North America </Td> </Tr> <Tr> <Td_colspan="2"> landforms </Td> </Tr> <Tr> <Td_colspan="2"> The primary watersheds of North America include the Arctic Watershed (blue), the Atlantic Watershed, and the Pacific Watershed; which do not include endorheic basins such as the Great Basin . </Td> </Tr>

What are the major watersheds in the united states