Overflow National Wildlife Refuge protects high quality floodplain hardwood habitat in the Mississippi Alluvial Valley. The refuge forest is crossed by Overflow Creek and several other secondary tributaries and is basically roadless. Access is by foot or seasonally open all-terrain vehicle trails.
This site regularly supports significant densities several birds of state conservation concern: Prothonotary Warbler, Wood Thrush, Mottled Duck, Mississippi Kite, Loggerhead Shrike, and Black-necked Stilt. Several thousand acres of impoundment units are managed specifically for waterfowl and shorebirds. The average 10 year winter population of ducks is about 75,000. Common species are Mallard, American Widgeon, Gadwall, Ring-necked Duck, Wood Duck, and Lesser Scaup. Shorebird populations routinely exceed 5,000, with 10,000 birds at peak use periods during mid-late summer. Common species are Pectoral Sandpiper, Killdeer, Black-necked Stilt, Least Sandpiper, and Spotted Sandpiper. The refuge also provides high quality floodplain habitat for many species of neotropical migrants, including interior forest dwelling land birds.
Changes to water levels through water diversions, and introduced animals are potential threats.
Overflow National Wildlife Refuge
3858 HWY 8 E
Parkdale, AR 71661
Additional habitat types are 10% Swamp (cypress, tupelo, or mixed forest),10% Riverine, and 10% Artificial Impoundment.
Primarily for nature and wildlife conservation, but other uses include hunting/fishing and other recreation or tourism.