Union Lake's East Public Water Access Site is a carry-in access point managed by the county, providing non-motorized boating opportunities on this 887-acre lake.

The western access features an asphalt boat ramp suitable for motorized watercraft up to 18 feet, with parking available and no launch fees, though users must follow rules prohibiting camping, fires, and overnight mooring.

Note that zebra mussels were confirmed in the lake in 2024, so boaters should follow aquatic invasive species prevention protocols including cleaning, draining, and drying equipment before and after use.