Rush Lake (E) Public Water Access Site is a concrete boat ramp located at the northeast corner of Rush Lake in Chisago County, offering access to Minnesota's largest prairie pothole lake east of the Mississippi River.

The site features a public parking lot and trailer turnaround area, though the access canal may have seasonal cattail obstructions requiring careful navigation.

This location is ideal for kayakers and small boats exploring the extensive cattail marshes and wildlife habitat, though GPS navigation is recommended due to the maze-like inlet system.