The Roe River runs between Giant Springs and the Missouri River in Great Falls, Montana, United States. The Roe River is only 201 feet (61 m) at its longest constant point.
A successful campaign to get the Roe River recognized by the Guinness Book of Records as the shortest river in the world originated from students at Lincoln Elementary School in Great Falls, Montana. Students Molly A. Petersen and former NFL football player Dallas Neil put in an appearance on the Tonight Show as part of this effort.
Previously, Oregon's D River was listed in the Guinness Book of World Records as the world's shortest river at 440 feet (134 m).