Optima National Wildlife Refuge
Encyclopedia
Located in the middle of the 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...

 panhandle, the 4333 acres (17.5 km²) Optima National Wildlife Refuge is made up of grassland
Grassland
Grasslands are areas where the vegetation is dominated by grasses and other herbaceous plants . However, sedge and rush families can also be found. Grasslands occur naturally on all continents except Antarctica...

s and wooded bottomland on the Coldwater Creek
Coldwater Creek
Coldwater Creek is a women's apparel and accessories retailer based in Sandpoint, Idaho, United States. The company was founded in 1984 by Dennis and Ann Pence. Coldwater Creek sells its products in stores, through catalogs and online. The online outlet carries apparel that was featured during...

 arm of the Optima Reservoir.
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