How much waterfalls are they're

On the main canyon loop trail there 10 visible waterfalls.

In addition to the loop of 10 falls, there is one more hidden away on the south side of the park accessed via the perimeter trail called Shellburg falls. Be ready for an all day hike, or a couple hours of mountain biking. A great place to go to get away from the crowds.

The park is pretty big and it depends on what part of the park you are going to.

I know of the two main walk behind waterfalls..within a 15 minute walk from one another. I believe there are several others but we had to drive and stop the car to view

Depends on time of year, 10 waterfalls during winter, 9 during the others season, (winter falls)