Spainhour Falls is a waterfall on Spadra Creek in Johnson County, Arkansas, in the Boston Mountains region, with a total height of about 16 feet. It lies about 10.4 miles north of Clarksville and roughly 49.3 miles southeast of Fayetteville as the crow flies.
At 16 feet it is on the modest side for Arkansas, where the typical waterfall with a recorded height stands around 34 feet; it ranks 87th of 110. The water comes down as a block waterfall, wider than it is tall, spilling over a broad ledge.
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.
There are 56 recorded waterfalls in Johnson County. Lucy Falls, a 17-foot curtain waterfall, is under a mile away. Aspen Falls, a 37-foot horsetail waterfall, is under a mile away. Waterfall 10 mi N of Clarksville, is about 3.2 miles away.
Spainhour Falls is located at 35.6217° N, 93.4654° 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 creek name is confirmed against the federal Geographic Names Information System. The exact position has not yet been verified on aerial imagery, so treat the map pin as approximate. Details on trails, parking and access have not been documented for this waterfall yet.