Largest lakes & reservoirs in US South Region by water volume
The estimated volume of water that a lake contains is measured at the lake’s normal elevation. By this measure, the world’s largest freshwater lake is Siberia’s Lake Baikal.Water Volume can be measured in acre-feet, in cubic miles, or in cubic kilometers. One acre-foot is the amount of water needed to cover one acre (43,560 square feet) to a depth of one foot. One cubic mile equals 3,379,200 acre-feet. One cubic kilometer equals 810,713 acre-feet. 1 acre-foot is equal to 325,851 US gallons. Siberia’s Lake Baikal contains about 6,276,367,740,000,000 gallons of freshwater – nearly 1 million gallons for every living person on earth.
The other – and more widely used – measure of a lake’s size is the lake’s surface acreage. By that measure, the world’s largest freshwater lake is North America’s Lake Superior.
Note: In the United States, an acre foot is a unit of volume used to refer to large-scale bodies of water. It is defined by the volume of water needed to cover 1 acre of surface area to a depth of 1 foot.
You can find many of the the world’s largest lakes (by water volume) on LakeLubbers. Note: For some lakes, the water volume data is unknown or does not apply, so you may see fewer lakes than the total 343 articles we have published for US South Region lakes.
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Below are lakes within USA > US South Region > Compared by water volume. This list does not represent all lakes in US South Region, only the 343 US South Region lake articles we have published on the LakeLubbers website.
Lake name  |
Water vol. in ac-ft |
Lake description |
|---|---|---|
| Lake Allatoona, GA (Georgia, Historic High Country Region, GA, US South Region, USA) |
367,500 ac-ft | (Also known as Allatoona Lake) Lake Allatoona, located northwest of Atlanta, is one of the most visited Army Corps of Engineers lakes in the United States. With a shoreline of 270 m … |
| Lake Kissimmee, FL (East Central Florida, Florida, US South Region, USA, West Central Florida) |
339,200 ac-ft | Lake Kissimmee’s massive 34,948 acre area earns the lake a spot as Florida’s third largest lake, finishing just behind Lake George and Lake Okeechobee … |
| William ‘Bill’ Dannelly Reservoir, AL (Alabama, River Heritage Region, AL, US South Region, USA) |
332,000 ac-ft | (Also known as Lake Dannelly, Millers Ferry, Dannelly Reservoir, Millers Ferry Reservoir, Millers Ferry Lake) Along the Alabama River in the River Heritage region of the state, visitors will find the William “Bill” Dannelly Reservoir. Located an hour southwest … |
| Lake Sinclair, GA (Classic South Region, GA, Georgia, Historic Heartland Region, GA, US South Region, USA) |
330,000 ac-ft | (Also known as Sinclair Lake) With 15,330 acres of sparkling water against the backdrop of the Oconee National Forest, Lake Sinclair in Georgia is an outdoor enthusiast’s premier d … |
| Tims Ford Lake, TN (Middle Tennessee, Tennessee, US South Region, USA) |
325,400 ac-ft | (Also known as Tims Ford Reservoir) Nestled in south central Tennessee between Tullahoma and Winchester, the clear, deep water of the Elk River meets the wooded sloped shores of Tims For … |
| Watauga Lake, TN (East Tennessee, Tennessee, US South Region, USA) |
324,000 ac-ft | (Also known as Lake Watauga) Watauga Lake exudes independence, solitude, and nature’s bounty. If these traditional American values appeal to you, then you need to visit pristine W … |
| Lake Wateree, SC (Olde English District, SC, South Carolina, US South Region, USA) |
310,000 ac-ft | (Also known as Wateree Lake) Lake Wateree lies 30 miles northeast of Columbia, South Carolina near Interstate 77. Duke Energy created the lake in 1920 by building a dam on the Cat … |
| Tellico Reservoir, TN (East Tennessee, Tennessee, US South Region, USA) |
304,000 ac-ft | (Also known as Tellico Lake) About 30 minutes south of Knoxville, nestled in the mountains of eastern Tennessee, Tellico Lake is the lake that almost wasn’t. Extending 33 miles al … |
| Fort Loudoun Lake, TN (East Tennessee, Tennessee, US South Region, USA) |
282,000 ac-ft | (Also known as Fort Loudoun Reservoir) Named for a nearby 18th century British fort, Fort Loudoun Lake draws millions of visitors every year for fishing, boating, and wildlife viewing. Loca … |
| Lake Greeson, AR (Arkansas, Ouachitas Region, AR, US South Region, USA) |
279,700 ac-ft | Southwest of Little Rock, Arkansas in the foothills of the Ouachita Mountains, lies a hidden mountain treasure. Lake Greeson is one of the oldest rese … |
| Logan Martin Lake, AL (Alabama, Metropolitan Region, AL, US South Region, USA) |
273,387 ac-ft | (Also known as Lake Logan Martin) Logan Martin Lake, located about 30 miles east of Birmingham in east central Alabama, is a 15,263-acre reservoir popular for boating, fishing, and oth … |
| Bankhead Lake, AL (Alabama, Metropolitan Region, AL, US South Region, USA) |
269,215 ac-ft | Much more like the river it began as than the lake it is now, Bankhead Lake winds it way through the Metropolitan region of Alabama. With twists and t … |