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Emerald Pool

Emerald Pool is a hot spring in Wyoming, at a modelled elevation of 2,217 m. Mount Holmes stands 3,149 m to the north, 25 miles off. The nearest named place is Green Spring, a hot spring 0.1 miles away. Fort Henry Historic Byway passes 25 miles off. 40 named summits stand within 25 miles.

The story

Emerald Pool, a hot spring named for its emerald green color, is one of the main attractions at Black Sand Basin Hot Springs in Yellowstone National Park. Its temperature is 154.6 °F (68.1 °C) and its dimensions are 27 by 38 feet (8.2 by 11.6 m) with a depth of 25 feet (7.6 m). The color is due to growth of yellow bacteria and algae. Cooling, the result of objects thrown into the pool and natural debris, has affected the growth of the bacteria and algae, making the pool appear orange and brown around the edges.

From Wikipedia, CC BY-SA 4.0.

Wikidata Q49718702, referenced by the OpenStreetMap record.

How to reach it

Coordinates44.46101, -110.85519

Named places within 25 miles

Hot springs
  • Green Spring: 0.1 mi
  • Rainbow Pool: 0.1 mi
  • Sunset Lake: 0.1 mi
  • Cucumber Spring: 0.1 mi
  • UNNG-BSB-1: 0.2 mi
Springs
Peaks: 40
Picnic sites: 36
Waterfalls: 33
Attractions: 25
Parks: 14
  • De Lacy Park: 7.2 mi
  • Dunbar Park: 18.1 mi
  • Heritage Park: 18.2 mi
  • West Yellowstone Town Park: 18.5 mi
  • Recreation Park: 18.5 mi
Cliffs: 8
Historic sites: 3
Nature reserves: 1

Summits around it

The highest named summits within 25 miles of Emerald Pool. Elevation from each summit’s own record; bearing measured between the two coordinates.

SummitBearingElevationDistance
Mount HolmesN 360°3,149 m24.7 mi
Mount SheridanSE 130°3,135 m21.0 mi
Factory HillSE 126°2,902 m19.6 mi
White PeaksN 358°2,887 m24.4 mi
Flat MountainESE 110°2,795 m22.3 mi
Mount Two TopWNW 300°2,640 m22.9 mi
Corkscrew HillE 97°2,626 m6.5 mi
Elephant Back MountainENE 69°2,619 m21.8 mi

When to go

Light through the year

DateSunriseGolden hourSunset
March equinox07:2718:5819:36
June solstice05:4020:2821:12
September equinox07:1118:4419:23
December solstice07:5715:5916:47

Local time (America/Denver).

Climate normals

Months averaging 50–80 °F: Jul–Aug.

JanFebMarAprMayJunJulAugSepOctNovDec
Avg °F151724324250585647362314
Precip in2.12.12.22.42.72.41.21.41.72.32.22.8

1991–2020 U.S. Climate Normals, NOAA NCEI — OLD Faithful, 1 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.

OpenStreetMapWikidata

OpenStreetMap element way/361642618

More hot springs in Wyoming

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