Pams Grotto Falls is a waterfall on tributary of Haw Creek in Johnson County, Arkansas, in the Boston Mountains region, with a total height of about 37 feet. It lies about 18.3 miles northeast of Lamar and roughly 57 miles southeast of Fayetteville as the crow flies.
At 37 feet it is taller than the typical Arkansas waterfall of about 34 feet, ranking 49th of 110 with a recorded height. The water comes down as a plunge, where the water drops vertically and loses contact with the rock face.
The Boston Mountains are the highest and most rugged part of the Ozarks, deeply dissected sandstone plateaus covered in oak-hickory forest with shortleaf pine. Clear creeks cut narrow hollows with numerous bluff-line waterfalls, at their best in spring. tributary of Haw Creek carries 3 recorded waterfalls, and Pams Grotto Falls is the tallest of them.
There are 56 recorded waterfalls in Johnson County. Haw Creek Falls, a 6-foot block waterfall, is under a mile away. Pack Rat Falls, a 24-foot plunge waterfall, is under a mile away. Upper Pack Rat Falls, is under a mile away.
Pams Grotto Falls is located at 35.6819° N, 93.2534° W. The listing is based on the World Waterfall Database, one of the sources compiled by the U.S. Geological Survey in its inventory of waterfalls and rapids of the conterminous United States. The position was verified on aerial imagery. Details on trails, parking and access have not been documented for this waterfall yet.