How clean is the water flowing through the Niagara Falls?

The water is filthy- it is as clean as Lake Erie and that is not very clean. I took a jet boat tour of the Niagara Gorge with a friend who had taken a bad slide in a softball game at University at Buffalo the previous day, leaving a large open wound on his leg. Before the jet boat tour, it was healing well. read more

The water flows from streams and rivers that empty into the Great Lakes, from Lake Superior down through Niagara to Lake Ontario, then into the St. Lawrence River to the Atlantic Ocean. Water always flows down to the sea, and the land slopes downward through the Great Lakes Basin from west to east, but the Niagara River actually flows north. read more

Actual amount varies, there are two hydroelectric plants which draw water into their reservoirs prior to the Falls. Their intake greatly affects the volume of water flowing over the falls. The amount of water being siphoned away depends on two variables. The time of year, and the time of the day. read more