Largest lakes & reservoirs in Oklahoma 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 48 articles we have published for Oklahoma lakes.
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Below are lakes within USA > US Southwest Region > Oklahoma > Compared by water volume. This list does not represent all lakes in Oklahoma, only the 48 Oklahoma lake articles we have published on the LakeLubbers website.
Lake name  |
Water vol. in ac-ft |
Lake description |
|---|---|---|
| Fort Cobb Lake, OK (Great Plains Country, OK, Oklahoma, US Southwest Region, USA) |
75,021 ac-ft | (Also known as Fort Cobb Reservoir) Fort Cobb Lake is in the beautiful Great Plains Country region of southwestern Oklahoma surrounded by plains, prairies and hills. The Great Plains, si … |
| Lake Hefner, OK (Frontier Country, OK, Oklahoma, US Southwest Region, USA) |
75,000 ac-ft | The Hefner Dam was completed in 1947, creating a lake with a surface area of 2,500 acres and an 18 mile long shoreline. Located in northwest Oklahoma … |
| Lake Eucha, OK (Green Country, OK, Oklahoma, US Southwest Region, USA) |
74,237 ac-ft | Lake Eucha is a 2,860-acre reservoir with 48 miles of shoreline located in Delaware County of northeastern Oklahoma. This tourism region is called “Gr … |
| Arbuckle Lake, OK (Arbuckle Country, OK, Oklahoma, US Southwest Region, USA) |
72,400 ac-ft | (Also known as Lake of the Arbuckles, Lake Arbuckles, Lake Arbuckle, Arbuckle Reservoir) Oklahoma’s Chickasaw National Recreation Area draws over three and a half million visitors a year and their main attraction is Lake of the Arbuckles. … |
| Lake Wister, OK (Kiamichi Country, OK, Oklahoma, US Southwest Region, USA) |
61,423 ac-ft | (Also known as Wister Lake, Wister Reservoir) Lake Wister, in southeastern Oklahoma’s Kiamichi Country, is a reservoir created by damming the Poteau River — the only river that flows north in Okl … |
| Lake Lawtonka, OK (Great Plains Country, OK, Oklahoma, US Southwest Region, USA) |
55,574 ac-ft | Lake Lawtonka is a 2,400-acre reservoir with just under 20 miles of shoreline located in Comanche County, part of Great Plains Country in southwestern … |
| Pine Creek Lake, OK (Kiamichi Country, OK, Oklahoma, US Southwest Region, USA) |
53,750 ac-ft | (Also known as Pine Creek Reservoir) Pine Creek Lake, flowing north to south in the Kaimichi Region of Oklahoma, covers 3,750 acres of recreation and wildlife paradise. Authorized by the … |
| Copan Lake, OK (Green Country, OK, Oklahoma, US Southwest Region, USA) |
43,400 ac-ft | (Also known as Lake Copan, Copan Reservoir) Named after a small town situated near its banks in Oklahoma, Copan Lake was completed in 1983. Flood control, water supply, water quality control, re … |
| Spavinaw Lake, OK (Green Country, OK, Oklahoma, US Southwest Region, USA) |
31,686 ac-ft | (Also known as Lower Spavinaw Reservoir, Spavinaw Reservoir) The tiny town of Spavinaw, in Oklahoma’s Green Country Region, guards Spavinaw Lake – the principal water supply for the City of Tulsa over fifty mile … |
| Arcadia Lake, OK (Frontier Country, OK, Oklahoma, US Southwest Region, USA) |
29,705 ac-ft | Arcadia Lake is one of the Southwest’s newest lakes. In the Frontier Country Region of central Oklahoma, forest meets grassland to create a unique are … |
| Great Salt Plains Lake, OK (Oklahoma, Red Carpet Country, OK, US Southwest Region, USA) |
26,111 ac-ft | With over 8,600 acres of water and 41 miles of shoreline, Great Salt Plains Lake in northern Oklahoma’s Red Carpet Country is an outdoor enthusiast’s … |
| Newt Graham Lock and Dam, OK (Green Country, OK, Oklahoma, US Southwest Region, USA) |
24,260 ac-ft | (Also known as Newt Graham Lock and Dam 18, Newt Graham Lake, Newt Graham Reservoir, Newt Graham Pool) Barely 25 miles east of Tulsa, in Oklahoma’s Green Country Region, the Newt Graham Lock and Dam holds delight for the resident and visitor alike. The … |