I've been coming out here for about 5 years now. It's a great quick stop with incredible views. If you're short on time, but want great views to take countless pictures of, then this is it. There's a rim trail and a gorge trail (which is usually closed during the winter months). The rim trail is accessible throughout the year... we've been in all seasons.
The falls are beautiful and tall. They look phenomenal in any season. The gorge trail takes you right to the bottom of the falls. There's no swimming signs posted, but people regularly swim there. We were able to swim out and jump into the water from directly behind the falls. It was really fun.
The rim trail leads to a stairway that takes you right down to the Salmon River at the top of the falls. There's plenty of flat rock that you can walk on. Be very careful at the top because there are no railings or barriers. You can walk right to the edge of the falls.
The trail itself is easily accessible for kids and dogs. There's virtually no incline (unless you follow the gorge trail) except for the stairway to the river. There's also a couple of lookouts along the rim trail. I gave this 5 stars because of the sheer beauty and freedom to roam. It never gets old.
This one should be called Salmon River Falls. Good hike from the parking lot to the dam. Got to see the falls, which was really awesome. Loved the gorge trail, made it that much more interesting. If you're just going to see the falls then the trail is paved so don't need special shoes. if you want to go to the dam, hiking boots recommended, as you have cross a few streams to continue.