The closest waterfalls is a fairly easy hike and less than half way to Rainbow Falls. Rainbow Falls is a good hike that is difficult for small children and fairly steep in places.
Depends on what you mean waterfall. We've been many times and never made it to the big falls. This would be great to see fish on hatchery and play in river. IMHO best waterfall would be lower wildcat falls about 5min west. Check it out!!
Even without taking the trails, it's a neat place to take even small children. The park ranger will give them fish food to feed the fish in the hatchery. We like to take a pick nick lunch, and during the summer it's a great place to splash in the water.
I would think the closest trail would be too far for a small child. You can download a map and the trails are marked with mileage. Having said that, the first set of falls are off of a longer trail, so you would have to guesstimate the distance at about 1/2.
Across street from beach. Not far.
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