Picnic Falls is a waterfall on Castle Creek in Park County, Wyoming, in the Middle Rockies region, with a total height of about 25 feet. It lies about 21.1 miles east of West Yellowstone and roughly 109.3 miles northeast of Idaho Falls as the crow flies.
At 25 feet it is on the modest side for Wyoming, where the typical waterfall with a recorded height stands around 60 feet; it ranks 167th of 230. The water comes down as a tiered waterfall, falling in several distinct steps one after another. It falls in 2 drops.
The Middle Rockies are high, glaciated mountain ranges with alpine peaks, subalpine fir and spruce forest, lodgepole pine and grassy intermontane valleys. Snowmelt streams cascade down glacial valleys and canyon walls. Castle Creek carries 2 recorded waterfalls, and Picnic Falls is the tallest of them.
There are 114 recorded waterfalls in Park County. Sweetwater Falls, a 16-foot horsetail waterfall, is under a mile away. Devils Elbow Cascade, a 16-foot cascade waterfall, is about 1.4 miles away. Slippery Rock Cascade, a 40-foot cascade waterfall, is about 1.6 miles away.
Picnic Falls is located at 44.7149° N, 110.6813° 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 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.