Hagerman National Wildlife Refuge, a haven for migratory birds and other wildlife, lies on the Big Mineral Arm of Lake Texoma, on the Red River between Oklahoma and Texas. The refuge is made up of water, marsh, and upland habitat and visitors can hike, observe wildlife, hunt, fish at various times throughout the year.

The main focus at Hagerman NWR is providing a winter home for thousands of waterfowl. Foremost among the waterfowl are Canada geese. During fall, winter, and spring, numbers can reach 7,500 or more. Other geese include white-fronted and snow geese, with a scattering of the smaller Ross' geese.