I value the nature a lot and I appreciate the page like yours. I saw few of the waterfalls from your list – they are beautiful without the doubt. My only concern is about the units you are using. Since the readers have various understanding of units – both, in US and rest of the world, you could improve the listing with the following:
1. Translate units correctly, not like in the examples below (check others as well)
a. Niagara Falls – “7000 cubic meters per second” = 7 million liters per second
b. Victoria Falls “it’s the largest singular waterfall in the world” – 1 million liters per second. According to you the Niagara has water fall 7 time larger than Victoria.
c. Iguazu Falls “1000 cubic meters per second” = 1 million liters per second – same as Victoria
2. Use both units – like meters/feet, liters/gallons, etc.
3. Be consistent, do not mix units, even within the same system – like cubic meters and liters (even yourself got confused in unit translation)