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Mammoth Spring State Park Arkansas

Jennifer White • July 29, 2026

9 Million Gallons of Clear Water Flow from Mammoth Spring Every Hour!

Mammoth Spring State Park Arkansas Travel Blog

Some places leave a lasting impression the moment you arrive, and Mammoth Spring State Park in Arkansas is one of them.

The moment we arrived, I could hear the sound of rushing water before we even reached the spring (scroll to bottom to see video).

There is no fee to enter the park. The welcome center greets you when you pull up into the parking lot. It was evening when we arrived and was closed so we didn't get a chance to go inside. If you want to be able to go inside, be sure to check the hours.

The welcome center at Mammoth Spring State Park in Mammoth Spring, Arkansas, United States. Mammoth Spring is a popular park featuring a large natural spring. Nine million gallons of water flow from this spring every hour. It forms a 10-acre lake and runs southward as the Spring River, a famous Ozark trout and float stream. The state park is 62.5 acres. Photo by Jennifer White Timeless Moments Photography

From the main overlook, we watched clear water which appears blue due to the cold tempature, flow from the spring creating a large pond. It's hard to imagine that about 9 million gallons of water flow from it every hour, making it one of the largest natural springs in the United States. This is also where Spring River begins.

An expansive view from an overlook at Mammoth Spring State Park in Mammoth Spring, Arkansas, USA. This is a beautiful view one of the largest natural springs in the world. To the left you can see a quaint walkway bridge that crosses over the spring. Nine million gallons of water flow from this spring every hour. It forms a 10-acre lake and runs southward as the Spring River, a famous Ozark trout and float stream. Photo by Jennifer White with Timeless Moments Photography.

As the water leaves the pond area, it flows over a couple different small dam walls creating two rivers through the park. This is where you can really see the force of the water as it creates some rapids. In the photo above you can see there are 2 bridges that cross right over where the rapids are. Below is a closer photo of one of them.

Another expansive view from an overlook at Mammoth Spring State Park in Mammoth Spring, Arkansas, United States. I took this during the autumn fall season. There is a quaint walkway bridge that crosses over the spring. One of the largest springs in the world, nine million gallons of water flows it every hour. It forms a 10-acre lake and runs southward as the Spring River, which is famous for Ozark trout and as a float stream. Photo by Jennifer White with Timeless Moments Photography.

When you stand on one of the bridges, you can actually feel the force of the water as it flows below you letting you know just how powerful it is and that it demands respect. It also is a cooler spot to stand during the hot summer as the spring maintains a nearly constant temperature of 58°F (14°C) throughout the year.

Standing above the rushing blue waters of Mammoth Spring in Mammoth Spring, Arkansas, United States, I captured this view from a walkway bridge during the vibrant fall season. The naturally clear, blue water surges from the spring pond, cascading over a small dam and forming a small waterfall as it continues its journey forming rapids. Located within Mammoth Spring State Park, this powerful spring produces an incredible nine million gallons of water every hour, creating a 10-acre lake that becomes the Spring River, a well-known Ozark destination for trout fishing and floating. The park itself spans 62.5 acres, showcasing the natural beauty and energy of one of Arkansas’s most impressive springs. Photo by Jennifer White Timeless Moments Photography.

A beautiful fall season day at Mammoth Spring State Park in Mammoth Spring, Arkansas, USA with a bench. This bench has a great view of one of the largest natural springs in the world. In distance you can see a quaint walkway bridge that crosses over the spring. Nine million gallons of water flow from this spring every hour. It forms a 10-acre lake and runs southward as the Spring River, a famous Ozark trout and float stream. Photo by Jennifer White with Timeless Moments Photography.

Be sure to take some time to walk around the 62.5 acre park. Scenic paved walkways and boardwalks offer different viewpoints where you can watch the water rush through. Along the way, you'll also find the restored 1886 Frisco Depot, which now serves as a museum highlighting the area's railroad history, as well as a historic steam locomotive and caboose on display.

Standing along the side of the river bank of the natural river made by Mammoth Spring in Mammoth Spring, Arkansas, United States. A State Park, I took this during the autumn fall season as you can see the colorful trees. There is a quaint walkway bridge that crosses over the naturally blue flowing spring water. One of the largest springs in the world, nine million gallons of water flows it every hour. It forms a 10-acre lake and runs southward as the Spring River, which is famous for Ozark trout and as a float stream. Photo by Jennifer White Timeless Moments Photography.

Shaded picnic areas, fishing opportunities, and plenty of benches make it easy to slow down and enjoy the peaceful surroundings while taking in one of Arkansas' most remarkable natural springs. Visiting during the spring and autumn season gives the landscape and extra pop of color which was stunning to see.

Besides the spring, one of the park's most recognizable landmarks is the historic dam.

A view of the dam and waterfall at Mammoth Spring State Park in Mammoth Spring, Arkansas, United States during the fall season. Nine million gallons of water flow from this spring every hour. It forms a 10-acre lake and runs southward as the Spring River, a famous Ozark trout and float stream. The state park is 62.5 acres.

Completed in 1887, the dam played an important role in the community's early development. The spring's constant flow powered one of Arkansas' first hydroelectric plants, providing electricity to the nearby mill and town long before modern power systems became common. Today, the historic dam remains a centerpiece of the state park, blending the area's engineering history with its natural beauty.

I captured this side view of the historic dam and cascading waterfall at Mammoth Spring State Park in Mammoth Spring, Arkansas, United States, during the beautiful fall season. Surrounded by autumn colors, the rushing water and rugged stonework create a peaceful scene that highlights one of the Ozarks' most remarkable attractions.
Mammoth Spring is one of the largest natural springs in the region, releasing an incredible nine million gallons of water every hour. The spring's crystal-clear waters form a picturesque 10-acre lake before flowing southward as the Spring River, a nationally known Ozark stream celebrated for its trout fishing, floating, and scenic beauty.
Encompassing approximately 62.5 acres, Mammoth Spring State Park preserves both the natural wonder of the spring and the rich history surrounding it. This photo features the beauty of the season and the powerful waters that have shaped this iconic Arkansas destination for generations. Photo by Jennifer White Timeless Moments Photography

Standing below it, you can feel and hear it's force as the water rushes over creating a beautiful waterfall. You can also walk over the top of it too.

I do wish we got to spend more time there. I've been there before but it had been a while and I was much younger. Need to get back down there.

Below is a short video we took while there. You can also check out my professional photos I captured while there here - https://5-jennifer-white.pixels.com/featured/side-view-of-mammoth-spring-dam-jennifer-white.html

Hope you get the chance to see it in person. Don't forget to check out the video below and to see more videos on trips around the Ozarks and behind, help support our channel by liking and subscribing - https://www.youtube.com/@jenniferwhitetmphoto?sub_confirmation=1

Blessings!