| Roe River | |
|---|---|
 Roe River flowing from Giant Springs | |
  Location of mouth in Montana | |
| Location | |
| Country | United States |
| State | Montana |
| County | Cascade County |
| Physical characteristics | |
| Source | Giant Springs |
| • coordinates | 47°32′01″N 111°13′46″W / 47.53361°N 111.22944°W[1] |
| Mouth | Missouri River |
• coordinates | 47°32′05″N 111°13′49″W / 47.53472°N 111.23028°W[1] |
• elevation | 3,245 feet (989 m) |
| Length | 201 feet (61 m) |
The Roe River runs from Giant Springs to the Missouri River near Great Falls, Montana, United States. The Roe River is only 201 feet (61 m) long at its longest constant point, and had been named as the World's Shortest River by the Guinness Book of World Records before Guinness eliminated the category in 2006. Towards its mouth, the Roe is about 6–8 feet (1.8–2.4 m) deep.[citation needed]
According to the latest data, the shortest river in the world is the Reprua, flowing in the Gagra District of the Republic of Abkhazia. Only 18 m (59 ft) long, it is one of the shortest rivers in the world and is said to be one of the coldest rivers on the Black Sea coast.