Union Falls
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Union Falls is a waterfall in Wyoming, at a modelled elevation of 2,048 m. Ranger Peak stands 3,453 m to the south-southeast, 19 miles off. The nearest named place is Birch Hills, a peak 2.7 miles away. Mesa Falls Scenic Byway passes 21 miles off. 57 named summits stand within 25 miles.
The story
Union Falls is a fan-type waterfall on Mountain Ash Creek, a tributary of the Fall River in the Cascade Corner (southwest) of Yellowstone National Park, in Wyoming, United States. With a height of 250 feet (76 m), it is the second tallest major waterfall in Yellowstone, exceeded only by the lower Yellowstone Falls. The falls was named by members of the Arnold Hague Geological Surveys sometime between 1884 and 1886. Geologist J.P. Iddings claims the name derives from the fact that a tributary of Mountain Ash Creek joins at the very brink of the falls, thus Union Falls. Access to the falls is via the Mountain Ash Creek trail and the Grassy Lake Road.
From Wikipedia, CC BY-SA 4.0.
Wikidata Q38037, referenced by the OpenStreetMap record.
How to reach it
- 20.6 mi off the Mesa Falls Scenic Byway
- 22.5 mi off the Teton Scenic Byway
- 30.1 mi off the Fort Henry Historic Byway
Overlooks nearby
- Lower Mesa Falls · 22 mi
Named places within 25 miles
- Mr. Bubbles: 6.6 mi
- Huckleberry Hot Spring: 10.5 mi
- Funnel Spring: 11.4 mi
- Taurus Spring: 11.6 mi
- Snake Hot Springs: 14.0 mi
- Birch Hills: 2.7 mi
- Calf Creek Hill: 4.1 mi
- Douglas Knob: 8.4 mi
- Mount Berry: 10.0 mi
- Trischman Knob: 10.2 mi
- Terraced Falls: 3.1 mi
- Cascade Acres: 3.4 mi
- Cascade Creek Falls: 4.5 mi
- Iris Falls: 4.9 mi
- Lower Colonnade Falls: 5.0 mi
- Copper Kettle: 18.8 mi
- Sulphide Spring: 18.8 mi
- Arrowhead Spring: 18.8 mi
- Heart Spring: 18.9 mi
- Milk Cauldron: 19.1 mi
- Kepler Cascades: 17.8 mi
- Old Faithful: 18.6 mi
- Upper Geyser Basin: 18.7 mi
- Beehive Geyser: 18.8 mi
- Morning Glory Pool: 19.6 mi
- Cave Falls Picnic Area: 7.1 mi
- Snake River Picnic Area: 10.9 mi
- Picnic: 11.3 mi
- Lewis Lake Picnic Area: 13.5 mi
- Spring Creek Picnic Area: 17.4 mi
- Weather Rock: 5.6 mi
- Sheep Falls: 13.4 mi
- Wilcox Point: 16.1 mi
- Moose Mountain Slide: 17.9 mi
- Midway Bluff: 23.1 mi
- John D Rockefeller Memorial Parkway: 10.6 mi
- Basin Creek: 17.9 mi
- Basin Creek: 18.3 mi
- Basin Creek: 18.3 mi
- De Lacy Park: 19.1 mi
- Yellowstone Tribal Heritage Center: 18.5 mi
Summits around it
The highest named summits within 25 miles of Union Falls. Elevation from each summit’s own record; bearing measured between the two coordinates.
| Summit | Bearing | Elevation | Distance |
|---|---|---|---|
| Ranger Peak | SSE 164° | 3,453 m | 19.0 mi |
| Doane Peak | SSE 167° | 3,449 m | 19.9 mi |
| Eagle Rest Peak | SSE 165° | 3,416 m | 21.1 mi |
| Cleaver Peak | S 177° | 3,370 m | 24.7 mi |
| Traverse Peak | S 170° | 3,367 m | 22.7 mi |
| Eagles Rest Peak | SSE 165° | 3,327 m | 21.0 mi |
| Raynolds Peak | S 174° | 3,318 m | 22.3 mi |
| Rolling Thunder Mountain | S 172° | 3,308 m | 21.1 mi |
When to go
Light through the year
| Date | Sunrise | Golden hour | Sunset |
|---|---|---|---|
| March equinox | 07:27 | 18:58 | 19:36 |
| June solstice | 05:41 | 20:27 | 21:11 |
| September equinox | 07:11 | 18:45 | 19:23 |
| December solstice | 07:57 | 16:00 | 16:48 |
Local time (America/Denver).
Climate normals
Months averaging 50–80 °F: Jun–Aug.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °F | 13 | 16 | 25 | 33 | 42 | 50 | 57 | 56 | 47 | 36 | 23 | 14 |
| Precip in | 3.9 | 3.1 | 3.0 | 2.8 | 2.8 | 2.4 | 1.4 | 1.6 | 1.9 | 2.3 | 3.5 | 4.2 |
1991–2020 U.S. Climate Normals, NOAA NCEI — Snake RVR, 11 mi away.
Inside the official boundary of Yellowstone National Park. Quietest months by visitation: Nov and Mar; busiest: Jul.
NPS visitation statistics, monthly averages 2021–2025 (2020 excluded).
Where this comes from
Location and category confirmed against OpenStreetMap.
OpenStreetMapWikipediaWikidataOpenStreetMap element node/11816938117
Day trips start here
- Grand Teton National Park · 26 mi
Take the scenic way to Union Falls.
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