the Panama Canal
longest canal is in china, in Western Hemisphere its not the Panama canal which is less than 100 miles, possibly the Erie canal at about 360 miles, st Lawrence seaway is at about 2500 miles (assuming you meant miles and not feet...) but its not just a canal
the amazon river is the longest river in the western hemisphere
The longest river in the Western Hemisphere is the Amazon River, and numerous explorers have paddled its length. Notably, American adventurer Ed Stafford made headlines in 2010 when he completed a remarkable journey by walking the entire length of the river. While specific records for paddling the entire river may vary, many adventurers have undertaken this challenge, showcasing the Amazon's vast and diverse ecosystem.
The Andes.
Rhine River
the niger river
Parana river
The Parana river
amazon
Mackenzie
There are three major rivers to the Western Hemisphere and they are Yukon, Copper and Mackenzie river. :)
The Missouri River starts in Montana and flows generally east and south for 2540 miles before flowing into the Mississippi River, the second longest river in the United States. The Mississippi River (the largest river system) flows from Minnesota to the Gulf of Mexico. The Missouri and the lower Mississippi are usually considered as a single waterway, which is among the longest in the world.
amazon