Course
The Boyer River rises near Storm Lake in southwestern Buena Vista County and initially flows southwardly into Sac County. In southern Sac County it turns southwestward and flows through Crawford, Harrison and Pottawattamie Counties, past the towns of Deloit, Denison, Arion, Dow City, Dunlap, Woodbine, Logan and Missouri Valley. It enters the Missouri River in northwestern Pottawattamie County, 13 miles (21 km) north of Council Bluffs.
At Denison, the Boyer collects the East Boyer River, which rises in northwestern Carroll County and flows southwestwardly past Vail. In southwestern Harrison County, it collects the Willow River.
Read more about this topic: Boyer River