If you are referring to 2 bodies of water, than your answer is: a penninsula.
Oh
A narrow stripe of land that connects 2 large bodies of water is an isthmus.
Columbus
a strait?
The Buckeye State
Beatifull Ohio
White Trillium
tomato juice
Strait
I'm afraid that no bodies of water border the state of Oklahoma.
Your local police can assist you.