The Largest Dam in Missouri Is an Architectural Masterpiece

Written by Jennifer Gaeng
Updated: August 1, 2023
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Key Points:
  • The largest dam in Missouri is the Bagnell Dam, located on the Osage River in central Missouri.
  • Built between 1929 and 1931, at the time the Bagnell Dam was one of the biggest and most expensive projects of its kind in the U.S.
  • It is a gravity-type dam, so it relies on the weight of the concrete structure to hold back the water without the use of any mechanical components.

Missouri’s basin is home to an estimated 17,200 dams and reservoirs, the majority of which are modest, regional water storage facilities. The watershed’s reservoirs have a combined capacity of about 141,000,000 acre-feet. Together with dams on the river’s tributaries, these structures lessen the likelihood of downstream floods along the Missouri and Mississippi. The largest dam in Missouri is the Bagnell Dam and it is an architectural masterpiece. In this article, we will be exploring the history of this dam and its purpose.

Infographic of Bagnell Dam
The dam is named after Walter Bagnell, president of the Union Electric Company of St. Louis.

The Largest Dam in Missouri

bagnell dam

Bagnell Dam is located on the Osage River in Missouri.

©Kaleb Tallmage/Shutterstock.com

The Bagnell Dam, located on the Osage River, is the largest dam in Missouri. The dam is a hydroelectric dam on the Osage River in central Missouri, located near the city of Lake Ozark. It was built between 1929 and 1931 by the Union Electric Company of St. Louis. It was named after company president, Walter Bagnell.

At the time of its construction, the Bagnell Dam was one of the largest and most expensive projects of its kind in the United States. It is a gravity-type dam, meaning it relies on the weight of the concrete structure to hold back the water without the use of any mechanical components. The lake behind the dam, known as Lake of the Ozarks, has a surface area of over 54,000 acres and stretches for over 90 miles.

What Is the Primary Purpose of the Bagnell Dam?

The primary purpose of the Bagnell Dam was to generate electricity for the growing population of Missouri. The dam’s six generating units have a combined capacity of 215 megawatts and can provide electricity to over 100,000 homes.

In addition to generating power, the Bagnell Dam has become a popular tourist attraction in recent years. The lake behind the dam is a popular destination for boating, fishing, and other recreational activities. There are also several resorts, campgrounds, and other attractions located around the lake.

There are ongoing discussions about the future of the Bagnell Dam and its role in maintaining the health of the Osage River ecosystem. Some environmental groups have raised concerns about the impact of the dam on native fish populations and the overall health of the river.

How Deep Is the Water at Bagnell Dam?

At its deepest, Lake of the Ozarks is just over 100 feet. The lake level measurement is the vertical distance from the mean sea level to the lake’s surface. The lake’s full pool level is 660 feet above mean sea level.

Can You Visit the Bagnell Dam?

Bagnell Dam Strip and Bagnell Dam

The Bagnell Dam is the largest dam in Missouri.

©Kaleb Tallmage/Shutterstock.com

Yes, you can visit the Bagnell Dam. It is located near Lake of the Ozarks in central Missouri and is a popular tourist destination. The area around the dam offers scenic views and recreation opportunities, including fishing, boating, and hiking. The dam itself can be viewed from various vantage points. There are usually guided tours available if you want to learn more about its history and inner workings.

You can take a tour around its grounds. You can also check out its museum. The museum displays artifacts from when it was first constructed as well as some interesting facts about how it works today. You can also enjoy fishing on either side of the lake or explore nearby trails for an outdoor adventure! And if you’re feeling daring enough, try taking their zip line course!

Is Bagnell Dam Near Lake of the Ozarks?

The Bagnell Dam is right by Osage Beach, on the banks of the Lake of the Ozarks. This is a popular vacation destination for locals and tourists alike. Osage Beach provides numerous restaurants along with some shopping opportunities too! From delicious seafood dishes to classic American cuisine, something awaits everyone here no matter what their taste buds desire. Plus, don’t forget about checking out local attractions such as Big Surf Water Park while here too!

Overall, visiting Bagnell Dam is sure to be an unforgettable experience filled with lots of fun things to do for both outdoorsy types and those who prefer more leisurely pursuits. Everyone can find something they’ll love doing here year-round. So, make sure to add this destination to your list next time you are planning a getaway near Lake Ozark, Missouri!

Fishing Spots at the Bagnell Dam

Invasive Asian carp in the tailwaters of Bagnell Dam on the Osage River that makes the lake of the Ozarks

Invasive Asian carp are in the tailwaters of Bagnell Dam on the Osage River that makes the lake of the Ozarks.

©Gino Santa Maria/Shutterstock.com

The Bagnell Dam in Missouri is a popular fishing spot where anglers can catch a variety of game fish, including largemouth and smallmouth bass. There are also other types of fish in the Osage River, which is a true multispecies fishery. While the dam itself may not be family-friendly, there are nearby areas where visitors can enjoy the scenery.

White bass, walleye, catfish, hybrid stripers, and paddlefish all cluster below the Bagnell Dam in the spring to spawn, making it an excellent time to go fishing. Walleye move upstream toward the dam to spawn in early spring, and this is the best time of year to pursue these fish. Anglers can expect to catch a wide variety of game fish, including largemouth and smallmouth bass, crappie, sunfish, catfish, white bass, hybrid stripers, walleye, paddlefish, and drum.

What Would Happen If Bagnell Dam Broke?

If the Bagnell Dam were to break, it would result in a catastrophic flood downstream for several miles. The massive amount of water stored in Lake of the Ozarks (which the dam forms) would rapidly rush downstream, affecting nearby towns and potentially reaching the Missouri River. The floodwaters would cause severe property damage, disrupt transportation and communication infrastructure, and could potentially result in loss of life. The resulting damage could take years to recover from and would require significant effort from government agencies and disaster relief organizations. It is important to note, however, that the likelihood of the Bagnell Dam breaking is low, as it is regularly monitored and maintained by responsible authorities.

Where Is Bagnell Dam Located on a Map?

Located near the Camden-Miller County line in the city of Lakeside, Missouri, Bagnell Dam serves as a barrier on the Osage River, forming the expansive Lake of the Ozarks.

Here is the Bagnell Dam on a map:

The photo featured at the top of this post is © Gino Santa Maria/Shutterstock.com


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About the Author

Jennifer Gaeng is a writer at A-Z-Animals focused on animals, lakes, and fishing. With over 15 years of collective experience in writing and researching, Jennifer has honed her skills in various niches, including nature, animals, family care, and self-care. Hailing from Missouri, Jennifer finds inspiration in spending quality time with her loved ones. Her creative spirit extends beyond her writing endeavors, as she finds joy in the art of drawing and immersing herself in the beauty of nature.

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