Located in the middle of the Oklahoma panhandle, the 4,333-acre (17.54 km2) Optima National Wildlife Refuge is made up of grasslands and wooded bottomland on the Coldwater Creek arm of the Optima Lake project.

The 8,062-acre Optima Wildlife Management Area, an Oklahoma state-managed hunting area, sits adjacent on the Beaver River arm of the Optima Lake project.

[2] This article incorporates public domain material from websites or documents of the United States Fish and Wildlife Service.

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