- Meredosia National Wildlife Refuge2219 Beach Road Meredosia, IL 62665
- Headquarters Hours (Located at Chautauqua National Wildlife Refuge):Monday - Friday, except federal holidays7:30 a.m. - 4:00 p.m.Note:The office may be closed due to weather if local school are closed.Refuge Lands and Waters HoursFebruary 1 - October 15Sunrise - sunset. All land and water areas of the refuge are open to foot and boat access.October 16 - January 31Sunrise - sunset. Foot access is permitted on refuge land along the east side of Meredosia Lake in Morgan County. The boat ramp remains open throughout the year for access to Meredosia Lake.