United States, Minnesota, Aitkin, Rice Lake National Wildlife Refuge. Aitkin County ... About five miles south of the town of McGregor in the Rice Lake National Wildlife Refuge. Near the top of the esker ridge on the east side of Rice Lake. At a small kettle pool on the west side of the esker ridge road. T 47N R 24W NE1/4 of NW1/4 of Sec 36. 047N 24W 36