Arethusa Falls Trail
This is a 1.4 mile hike with 800 feet of elevation gain to the tallest waterfall in New Hampshire. Depending on when you go, and how much rain there has been, will depend on how much water you see at the falls. This is a popular hike, so start early to avoid the crowds.
One of the tallest waterfalls in New Hampshire, Arethusa Falls are located with Crawford Notch State Park
A relatively tough hike will lead you to a gorgeous waterfall. You can take the Bemis Brook trail for a 2.8 mile out and back trail, or continue along Frankenstein Cliff Trail for a 5.1 mi loop trail.