10 of the world’s shortest rivers; some less than 100 metres long

Rivers are often imagined as vast, winding waterways that carve through continents and sustain life across great distances, but not all rivers fit this description. According to WorldAtlas, around the world, there exist remarkably short rivers, some measuring less than 200 metres from source to mouth, yet they still qualify as true rivers because of their continuous flow of water into a larger body, such as a sea or lake. Despite their tiny size, these miniature rivers have unique ecological, cultural, and geographical significance. From Indonesia’s serene Tamborasi River to Italy’s charming Aril River, the world’s shortest rivers prove that even the smallest natural features can hold fascinating stories and immense environmental importance.1. Tamborasi River, Indonesia (20 metres) Located in Southeast Sulawesi, the Tamborasi River is often hailed as the shortest river in the world, stretching just 20 metres from source to mouth. Despite its size, it is a major tourist attraction, thanks to its forest-lined rocky banks, clear, cool waters, and the pristine white sand of Tamborasi Beach, where it empties into the Flores Sea. Fed by numerous mountain streams, this picturesque river lies around 85 km from Kolaka City and is a symbol of natural beauty in Indonesia’s Sulawesi province.2. Kovasselva River, Norway (20 metres)In Norway’s island of Hitra, the Kovasselva River begins at Lake Kovassvatnet and ends just 22 metres later in the Norwegian Sea. It may be tiny, but its surroundings, fjords, forested cliffs, and nearby coastal towns such as Kristiansund and Trondheim, give it a distinctly Scandinavian charm. Despite its short length, the river plays an important role in local hydrology and contributes to the island’s ecosystem.3. Reprua River, Georgia (27 metres) At just 27 metres long, the Reprua River in Abkhazia, Georgia, is one of the shortest, but also one of the deepest. Originating from the Krubera Cave, the world’s deepest known cave system (over 2,300 metres deep), this river gushes into the Black Sea with an impressive flow rate of 2,000 litres per second. The Reprua’s connection to the underground cave system makes it a favourite among speleologists and geologists alike.4. Ombla River, Croatia (30 metres) Just outside the historic city of Dubrovnik, the Ombla River travels only 30 metres before joining the Adriatic Sea at the Rijeka Dubrovacka Bay. It’s fed by groundwater from the Trebišnjica River and covers a drainage basin of roughly 600 square kilometres. Despite its short course, Ombla provides drinking water for Dubrovnik, making it one of the shortest yet most essential rivers in Europe.5. Jezernica River, Slovenia (55 metres) The Jezernica River is Slovenia’s shortest river, running just 55 metres from Wild Lake (Divje Jezero) to join the larger Idrijca River, which eventually empties into the Adriatic Sea. Wild Lake itself is both a karst spring and a lake with an underground water source, capable of water flow rates reaching 60 cubic metres per second. Its natural setting makes it a popular spot for visitors exploring Slovenia’s karst landscapes.6. Roe River, Montana, United States (61 metres) The Roe River in Great Falls, Montana, once held the Guinness World Record as the world’s shortest river, flowing 61 metres from Giant Springs into the Missouri River. Though small, the Roe River is navigable; boats weighing up to 500 tons have travelled its length. It’s a testament to how even the tiniest rivers can still support human and ecological activity.7. Rio Los Patos, Dominican Republic (61 metres)Matching the Roe River in length, the Rio Los Patos (meaning “River of Ducks”) flows 61 metres before entering the Caribbean Sea at Barahona Beach, a favourite destination for locals and tourists alike. The river earned its name from the abundance of ducks that once lived there, though they were later hunted to extinction. Muscovy ducks have since been reintroduced to restore the area’s natural charm.8. D River, Oregon, United States (130 metres) Located in Lincoln City, Oregon, the D River flows just 130 metres from Devil’s Lake to the Pacific Ocean. It was once declared the shortest river in the world by Guinness World Records, though that title was later contested. Despite its modest size, the D River plays host to two of the world’s largest kite festivals every year, attracting thousands of visitors to the Oregon coast.9. Azuis River, Brazil (147 metres) In Aurora do Tocantins, Brazil, lies the stunning Azuis River, also known as the Blue River, stretching for 147 metres. Its waters are crystal clear, flowing over smooth rock beds with a discharge of nearly 11,000 litres per second. The Azuis River’s mesmerising blue hue and cool temperature make it a popular swimming and eco-tourism destination in central Brazil, attracting nature lovers, photographers, and travellers seeking tranquillity amidst the breathtaking beauty of Brazil’s smallest river.10. Aril River, Italy (175 metres)The Aril River, affectionately called “Ri River” by locals, flows through Cassone, a charming village on Lake Garda’s eastern shore. Just 175 metres long, it is fed by numerous freshwater springs and passes over three small bridges and a waterfall before reaching Lake Garda, Italy’s largest lake. The Aril is also an important spawning site for trout, making it ecologically significant despite its miniature scale.