Mammoth Hot Springs Terraces

Yellowstone National Park, Wyoming, USA

About Mammoth Hot Springs Terraces

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Waterfall Safety and Common Sense

The Mammoth Hot Springs Terraces was perhaps the most unusual entry we have on this website.

These terraces were basically where geothermally-heated hot springs bubbled up from the ground and flowed over stair-stepping and rounded ledges.

Mammoth_Hot_Springs_106_08042020 - The impressive Mound Terrace that was flowing well during our August 2020 visit
The impressive Mound Terrace that was flowing well during our August 2020 visit

Such a flow of water over these ledges essentially meant that they were cascading waterfalls.

However, their scenic allure were further exacerbated by the colors brought forth by thermophile algae and bacteria thriving in the water.

It also helped that these terraces were quite large as some mounds were at least 30ft tall while others were over 100ft or more.

In fact, the Upper and Lower Terraces at Mammoth Hot Springs collectively made up Terrace Mountain, and was said to be the largest carbonate-depositing spring in the world.

Mammoth_Hot_Springs_037_08042020 - The colorful Palette Spring at the bottom of the Lower Terraces of the Mammoth Hot Springs as seen during our August 2020 visit
The colorful Palette Spring at the bottom of the Lower Terraces of the Mammoth Hot Springs as seen during our August 2020 visit

Like with the Midway Geyser Basin Runoff, the Mammoth Hot Springs Terraces did not rely on precipitation for its flow.

Yet these terraces might bend the rules of the predictability of flow test (see our waterfall definition article for how we determine the legitimacy of waterfalls).

Based on our experiences with the Mammoth Hot Springs (which spanned at least 16 years so far), we’ve observed some terraces come to life while others were diminishing or drying up.

Indeed, the best performing terraces and mounds that we saw on our August 2020 visit were the Palette Spring and Mound Terrace, but Orange Spring Mound was diminished.

Mammoth_008_jx_06232004 - Looking across the Canary Spring during our first visit to the Mammoth Hot Springs Terraces in late June 2004
Looking across the Canary Spring during our first visit to the Mammoth Hot Springs Terraces in late June 2004

On our first visit to the Mammoth Hot Springs in June 2004, the best performing springs were the Canary Spring and the Orange Spring Mound, but Mound Terrace didn’t flow at all.

And throughout our visits to the Mammoth Hot Springs Terraces, we’ve never seen the famous Minerva Terrace flow.

However, we’ve seen historical photos in the 80s showing why it was widely considered the poster child of what beautiful terraces looked like.

So given such uncertainty of flow, it’s arguable that these terraces should not count as waterfalls.

Mammoth_Hot_Springs_193_08042020 - Minerva Terrace was completely dry each time we've visited Mammoth Hot Springs
Minerva Terrace was completely dry each time we’ve visited Mammoth Hot Springs

However, these springs could be flowing for years before seismic and geothermal activity may change the flow patterns once again.

Thus, one can ask how long should the predictability window last as part of the predictable flow test?

Could it be year-over-year? Or can it behave for several years in a row before it changes and goes dormant for the next several years?

Indeed, it’s for these reasons that we think Mammoth Hot Springs Terraces really bend the rules on what constitutes a waterfall.

Mammoth_094_06232004 - Orange Spring Mound in the Upper Terrace Loop Drive had a lot more activity in late June 2004 than it did in August 2020
Orange Spring Mound in the Upper Terrace Loop Drive had a lot more activity in late June 2004 than it did in August 2020

We even didn’t consider them waterfalls on our first visit in June 2004, but we reconsidered after our August 2020 visit, especially after seeing the treatment that questionable South Dakota waterfalls had gotten at Grizzly Bear Falls and Cascade Falls near Hot Springs.

Experiencing the Terraces of Mammoth Hot Springs

In order to get up close and personal with these terraces, we walked the boardwalk of the Lower Terrace, which covered a distance of around 1.2 miles according to my GPS logs.

This was a very easy and leisurely stroll on the boardwalks taking in attractions like the Liberty Cap, Palette Spring, Minerva Terrace, Jupiter Terrace, Mound Terrace, and Cleopatra Terrace among others.

It was even possible to walk all the way up to the top of the Lower Terrace and join up with the Upper Terrace to see the Canary Spring.

Mammoth_Hot_Springs_160_08042020 - Context of the boardwalk of the Lower Terrace and the Mammoth Hot Springs Village, which was where the National Park Service Headquarters was based
Context of the boardwalk of the Lower Terrace and the Mammoth Hot Springs Village, which was where the National Park Service Headquarters was based

On both of our visits, we’ve done the Lower Terrace boardwalk and took around 90 minutes.

In addition to the Lower Terrace, the Upper Terrace featured a one-way 1.6-mile loop drive encompassing the Canary Spring, Highland Terrace, and Orange Mound among others.

Both of these terraces can easily be experienced in a half-day.

Authorities

The Midway Geyser Basin resides in Yellowstone National Park near West Yellowstone in Park County, Wyoming. It is administered by the National Park Service. For information or inquiries about the park as well as current conditions, visit the National Park Service website.

Maps and Routing Content are for annual subscribers. See Membership Options.
Content is for subscribers. See Membership Options.
Tagged with: mammoth hot springs, yellowstone national park, park county, wyoming, lower terrace, upper terrace, minerva terrace, palette spring, mound terrace, thermal springs, thermal runoff



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Johnny Cheng

About Johnny Cheng

Johnny Cheng is the founder of the World of Waterfalls and author of the award-winning A Guide to New Zealand Waterfalls. Over the last 2 decades, he has visited thousands of waterfalls in over 40 countries around the world and nearly 40 states in the USA.
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