- Kirwin NWR, was established to provide habitat for and facilitate the management of the Nation's migratory bird resource. The topography of the refuge is rolling with grass covered hilltops nearly 200 feet higher than the wooded creek bottoms.
A reservoir, established primarily for flood control and irrigation, covers 5,079 surface acres at conservation pool level. Primary water source for the reservoir is Bow Creek and the north fork of the Solomon River. Due to fluctuating water levels the 5,079 acres are often divided between water, mud flats, and timber/brush growth.
The remainder of the refuge is composed of 1,600 acres of cropland, 3,749 acres of grassland, and 400 acres of riparian areas and shelterbelts, surrounding Kirwin Reservoir. Kirwin Refuge serves as a migration stop over for waterfowl and as a staging point for water birds including Pelicans and Cormorants.
Kirwin also has a large winter population of both Bald and Golden Eagles and a large population of other species of hawks and owls. The refuge provides important nesting cover, food, and shelter for songbirds.
With proper water levels the refuge provides exposed mud as feeding areas for spring and fall migrations of shorebirds. Kirwin Refuge also provides food and cover for resident populations of white tailed and mule deer, pheasant, bobwhite quail, greater prairie chicken, and Rio Grand turkey.
The refuge is home to a rich variety of wildlife species including 34 species of mammals, 31 species of reptiles and amphibians, and 197 species of birds.
The refuge is located west of the town of Kirwin in Phillips County in north-central Kansas.