The cascading waterfalls in Yosemite were made possible by the glaciers that carved Yosemite Valley, which gave the cliffs needed to make the impressive drops possible. The rivers that feed the waterfalls themselves are mostly from snow melt, so often times don't last too long into the summer. Some waterfalls like Vernal Falls, Nevada Falls, and Bridalveil Falls have water year-round, expect of course, in the winter when they become frozen.
Yosemite
Yosemite Falls is in Yosemite National Park located in central CA in the Sierra Nevada Mountains. It is one of 3 major waterfalls in the park.
Yosemite became a national park because of it's waterfalls and wildlife.
Yosemite is essentially a glacial valley. There are many waterfalls, such as Yosemite Falls, and also extraordinary rock formations such as Half Dome and El Capitan.
Because there are so many waterfalls, that they could form high mount.
Yosemite is cold in the winter and spring, with snow until early spring. Summer and fall are warm in Yosemite and the waterfalls tend to run dry in the summer time.
Glacial erosion formed Yosemite Valley. Meanwhile, the streams eroded the granite rock to form the waterfalls we know as Yosemite Falls and many others today.
Yosemite in California
Yosemite's Ribbon Falls is 1612ft. It is located in California.
The highest waterfalls in continental US are to be found in the Yosemite National Park - see below in the Sources and Related Links section for more information.
Both Niagra Falls and Yosemite Falls are waterfalls. That is probably as similar as they get. While Niagra flows all year, Yosemite Falls may run out of water in the summer. Niagra Falls is also wider than Yosemite Falls.
yes waterfalls can be man-made