Yosemite Falls is the waterfall on Yosemite Valley's north wall that drops 739 metres.
It is the highest waterfall in Yosemite National Park and one of the tallest in North America. The waterfall has three principal sections: Upper Yosemite Fall, the middle cascades, and Lower Yosemite Fall. Together they form the full 739-metre descent from the rim to the valley floor.
Snowmelt is the main source of its flow, so Yosemite Falls is usually strongest in spring and early summer. In dry years it can become very small or disappear by late summer. Wind can also blow the water sideways, creating a distinctive spray effect near the upper section.
Visitors sometimes confuse Yosemite Falls with Bridalveil Fall, another prominent waterfall visible from Yosemite Valley. Bridalveil Fall is shorter and lies near the valley's southern entrance area. Yosemite Falls' height is commonly quoted as 739 metres, although different measurements may separate the upper, middle, and lower portions.