Blue Earth River Professional Review and Guide
"In medium to high water, the Blue Earth provides a quick, fun run down one of the most beautiful valleys in southwestern Minnesota. You'll have to pay a small fee to launch. The current is lively, dropping through frequent class I rapids. Large boulders in the streambed make canoeing difficult in low water.
The Blue Earth River, named for a deposit of earth the Dakota used as pigment and French explorer Pierre Le Sueur erroneously believed to be copper., flows quickly through a deep, wooded valley to join the Minnesota River at Mankato. The Blue Earth heads up far to the south of Mankato, near the Iowa border. In high water, you can start your trip at the County Route 13 bridge west of Good Thunder, the U.S. Highway 169 bridge at Vernon Center, or the Minnesota Highway 30 bridge west of Amboy."