Green water
One question people ask about Niagara Falls is why does the water have a green hue to it? The simple answer to this question is thousands of years of erosion. The mineral content beneath the flowing waters has turned the water a slightly blue-green color over the years.
There’s no denying that the greenish color gives Niagara Falls an even more beautiful appearance. Horseshoe Falls is noticeably greener than the others, possibly due to the unique minerals that lie on the riverbed. However, you should refrain from taking a sip from the water since you never know what’s in it.