Lake Texoma is one of the largest reservoir

Reservoir

A reservoir , artificial lake or dam is used to store water.Reservoirs may be created in river valleys by the construction of a dam or may be built by excavation in the ground or by conventional construction techniques such as brickwork or cast concrete.The term reservoir may also be used to...

s in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

, the 12th largest Corps of Engineers (USACE) lake, and the largest in USACE Tulsa District.
Lake Texoma is formed by Denison Dam

Denison Dam

Denison Dam, also known as Lake Texoma Dam, is a dam located on the Red River between Texas and Oklahoma that impounds Lake Texoma. The purpose of the dam is flood control, water supply, hydroelectric power production, river regulation, navigation and recreation.-History:Completed in 1943 primarily...

 on the Red River

Red River (Mississippi watershed)

The Red River, or sometimes the Red River of the South, is a major tributary of the Mississippi and Atchafalaya Rivers in the southern United States of America. The river gains its name from the red-bed country of its watershed. It is one of several rivers with that name...

 in Bryan County, Oklahoma, and Grayson County, Texas, about 726 miles (1,168.4 km) upstream from the mouth of the river. It is located at the confluence of the Red River and Washita River

Washita River

The Washita River is a river in Texas and Oklahoma, United States. The river is long and terminates into Lake Texoma in Johnston County , Oklahoma and the Red River.-Geography:...

s. The damsite is approximately 5 miles (8 km) northwest of Denison

Denison, Texas

Denison is a city in Grayson County, Texas, United States. The population was 22,773 at the 2000 census; it is estimated to have grown to 24,127 in 2009. Denison is one of two principal cities in the Sherman-Denison Metropolitan Statistical Area.-History:...

, Texas

Texas

Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...

, and 15 miles (24.1 km) southwest of Durant

Durant, Oklahoma

Durant is a city in Bryan County, Oklahoma, United States. The population was 15,877 at the 2010 census. Durant is the principal city of the Durant Micropolitan Statistical Area, which had a population of 42,416 in 2010...

, Oklahoma

Oklahoma

Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...

.