Which lake was created by Pensacola Dam, the first hydroelectric dam in Oklahoma, which was completed in 1940?

Pensacola Dam was built across the Grand River in northeastern Oklahoma and created the Grand Lake O’ the Cherokees. Lake Thunderbird, Lake Eufaula, and Lake Texoma were formed by different dams, so the correct choice is the Grand Lake O’ the Cherokees.

AI-written and checked against the verified answer.