Which river has the largest waterfall discharge cascade?

Iguazu Falls, on the border of Argentina and Brazil, is one of the world’s greatest waterfall systems, set on the Iguazu River. During periods of high flow, the complex can have around 275 separate drops spread across nearly 3 kilometres. While not the tallest waterfall, its combined width, volume, and number of cascades make it extraordinary. The falls are part of a protected national park landscape and are a UNESCO World Heritage Site. They are also among the most visited natural attractions in South America.