The earliest known residents of the area were people from the Trempealeau Hopewell Culture of the Middle Woodland Period (100-400 CE). Evidence from their culture includes a mound from the Wakanda Mounds Group in Wakanda Park, along the western shore of Lake Menomin. Most of these mounds are thought to be from Effigy Mound cultures from this time period. Artifacts from the Late Woodland Period (400-1000 CE) have also been uncovered. It is theorized that agricultural villages supported the population during summer months, transitioning to hunting and gathering from fall through spring. The next known population group is the Santee Dakota in the 1600s and 1700s, who engaged in conflicts with the Ojibwe people, who migrated west as refugees. Armed with European weapons, the Ojibwe pushed westward, eventually winning at the Battle of Kathio in 1770. The two tribes continued their warfare, eventually signing the 1825 First Treaty of Prairie du Chien, which made a border between the two just north of Menomonie, with the Dakota claiming the southern lands.