Question: Traveling sailors could drink the Amazon’s fresh water before they could even see South America. Can you guess how many miles off coast this was?
Answer choices: A) 10 miles B) 50 miles C) 125 miles D) 1,000 miles
Correct Answer: C) 125 miles
Summary: Explorers, sailors, and other adventurers traveling to the eastern coast of South America would reach a point where the ocean water would transition into pure fresh water. This occurred about 125 miles from the many mouths of the Amazon River. The river releases water at a force of 55 million gallons per second and drains an area about the size of the United States. It is also eleven times as voluminous as the Mississippi River.
Source: Monga Bay, Rhett Butler