MISSOURI STATE - In the "Show-Me State," the debate over the largest lake often sparks a friendly rivalry between two massive bodies of water in the Ozarks. While one is a world-famous tourist destination known for its commercial buzz, the other is a sprawling wilderness reservoir that technically holds the title for the largest total acreage.
The Man-Made Heavyweight: Harry S. Truman Lake
By surface area, Harry S. Truman Lake (commonly called Truman Reservoir) is the largest lake in Missouri. Managed by the U.S. Army Corps of Engineers, it was completed in 1979 and serves as a vital tool for flood control and hydroelectric power.
- Surface Area: Approximately 55,600 acres (at normal pool), but it can expand to over 200,000 acres during flood stages.
- Location: Located in Western Missouri, primarily in Benton, Henry, St. Clair, and Hickory counties, near the town of Warsaw.
Truman Lake is characterized by its rugged, undeveloped beauty. Because it is a flood-control reservoir, most of the shoreline is federally protected, preventing the sprawling residential development seen on other Missouri lakes. It is a premier destination for serious anglers seeking crappie and catfish, as well as hunters exploring the thousands of acres of surrounding public land.
The "Magic Dragon": Lake of the Ozarks
Just a few miles downstream from Truman Lake lies the Lake of the Ozarks. While it is slightly smaller in surface area at normal levels, it is arguably the Midwest's most famous lake and boasts a much larger cultural footprint.
- Surface Area: Approximately 54,000 acres.
- Shoreline: Over 1,150 miles—a staggering distance that exceeds the entire coastline of California.
- Location: Central Missouri, spanning Camden, Miller, Morgan, and Benton counties.
Created by the privately funded Bagnell Dam in 1931, the Lake of the Ozarks is nicknamed "The Magic Dragon" due to its serpentine shape on a map. Unlike Truman Lake, the shoreline here is almost entirely privately owned, leading to a massive tourism industry filled with waterfront resorts, "shoot-out" boat races, and vibrant nightlife. It is one of the top recreational boating destinations in the country.
The Natural Rarity: Big Lake
Missouri has very few natural lakes, but the largest of these is Big Lake, located in the northwestern corner of the state.
- Surface Area: Approximately 646 acres.
- Location: Holt County, near the Missouri River.
Big Lake is an oxbow lake, formed centuries ago when the Missouri River changed its course. It is shallow and surrounded by fertile wetlands, making it a critical habitat for migratory birds. While it is a fraction of the size of the massive Ozark reservoirs, it represents the State natural history before the era of major dams and river engineering.
Missouri is home to massive water giants. Harry S. Truman Lake holds the title of the largest overall body of water, offering a wild, undeveloped paradise for fishing and outdoor recreation. The Lake of the Ozarks follows closely behind as the State premier vacation destination, famous for its incredible 1,150 miles of developed shoreline. Meanwhile, Big Lake in the northwest remains the State largest natural lake, serving as a quiet, historic remnant of the Missouri River's ancient path.