Marais Temps Clair Conservation Area offers public access via gravel roads and an 8. 9 km loop trail suitable for hiking and wildlife viewing in north St. Charles County.

The 918-acre area features 10 managed pools with electric pumps maintaining water levels for waterfowl habitat, and allows fishing, boating with electric motors only, and bird watching year-round (with waterfowl hunting areas closed October 15-March 1).

Access is via Island Road north of St. Charles, with the area open 4 a. m. to 10 p. m. daily, though hunting, fishing, and boating are permitted 24 hours.