Kiera Jefferson
While many of the world's rivers are polluted, some remain relatively untouched by human activity. These unspoiled waterways are often located in areas with low human populations and minimal industrial activity. One such example is the Caragh River in southwestern Ireland, which flows through lush greenery and farmland and is known for its pristine waters and abundant salmon population. Similarly, the Torne River, which forms the border between Sweden and Finland, boasts clean waters due to successful conservation efforts. In other cases, rivers that were once heavily polluted have been restored through dedicated conservation and restoration campaigns, such as the St. Croix River and the River Thames. These success stories offer hope that, with the right interventions, even heavily polluted rivers can be revitalized and their ecosystems preserved for future generations.
| Characteristics | Values |
|---|---|
| Rivers with low pollution levels | Caragh River, Torne River, St. Croix River, Dwaki River, Thames River |
| Causes of low pollution | Conservation efforts, government intervention, remote location |
| Positive impacts | Wildlife preservation, recreation, clean drinking water |
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What You'll Learn
The Torne River, Sweden and Finland
The Torne River, also known as the Tornio, is a river in northern Sweden and Finland. It is the northernmost river of Sweden, rising near the border with Norway, west of Torne Lake (the largest lake in Swedish Lapland). The river then flows for 522 kilometres (324 miles) into the Gulf of Bothnia. The Torne River's lower course forms the boundary between Sweden and Finland.
The Torne River's drainage basin is 15,537 square miles (40,240 square kilometres) in area, with about one-third of it in Finland and Norway. The river's source is generally believed to be the lake Torneträsk, close to the North Atlantic and Narvik on the other side of the watershed. The Torne basin has a total area of 37,300 square kilometres (14,400 square miles).
The river has waterfalls in its upper course, while its lower course is strewn with rapids and is mostly non-navigable. However, it was once used for logging and is known for its salmon. The Torne River meets the Muonio River, which forms the border with Finland. From this point onwards, the Torne River itself forms the border between Sweden and Finland.
The clean waters of the Torne River are a result of successful conservation efforts in the area. The river flows unhindered by human inhabitants until it reaches the village of Kurravaara, where it splits into two parts. The area between the two streams is joined by the Beallejohka stream.
The Torne River is an important geographical feature, serving as a border between Sweden and Finland and providing a means of transportation and resource acquisition for the surrounding areas. The river also offers recreational opportunities, such as boating and tourism, contributing to the economic and social development of the region.
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St. Croix River
The St. Croix River, which runs through Afton State Park, is known for its majestic beauty and clean waters. It serves as a scenic border between the states of Minnesota and Wisconsin, offering a glimpse into the past with its nineteenth-century sites along the river. The river has undergone a remarkable transformation, going from being heavily polluted to becoming one of the cleanest rivers in the world. Today, it is a haven for wildlife and a popular destination for recreation, attracting visitors with its rushing waters, pines, rock outcrops, and sugar sand.
The St. Croix River has a rich history, dating back to when it was frequented by native bands of Dakota and Ojibwa. In the nineteenth century, Swedish settlements could be found upriver at Taylor and Saint Croix Falls, while downstream, quaint towns like Marine and Stillwater flourished. The river has since been designated a Wild River, ensuring minimal development along its banks and preserving its natural state.
The river provides a diverse range of activities for visitors. It is a popular spot for fishing, with excellent catches of walleye and bass. Canoeing is also a common pastime, offering a peaceful way to explore the river and take in the surrounding nature. For those seeking a more relaxed experience, river boat cruises are available, providing a unique perspective of the scenery.
Despite its transformation, the St. Croix River still faces the challenge of trash and pollution. Local volunteers play a crucial role in maintaining the river's cleanliness, with dedicated individuals adopting the river and organising clean-up efforts twice a year. Their dedication helps ensure that the St. Croix River remains a pristine natural environment for all to enjoy.
The St. Croix River stands as a testament to the beauty of nature and the importance of conservation. Its clean waters and scenic landscapes offer a peaceful escape from urban life, inviting visitors to explore, relax, and connect with the natural world. The river's ongoing journey towards sustainability serves as a reminder that our actions can make a significant impact on the health and longevity of our planet's precious waterways.
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Umngot River, India
The Umngot River, also known as the Dawki River and Wah Umngot, is located in the state of Meghalaya, India. It is known for its cleanliness and transparent water, with a visible riverbed. Arguably one of India's cleanest rivers, it is an important fishing spot for local fishermen. The river flows through the small town of Dawki, located at the bottom of the Jaintia Hills in the West Jaintia Hills district, and serves as a trade route between India and Bangladesh. The river is also a popular tourist destination, known for its natural beauty and boating events.
The Umngot River remains pristine due to the absence of human-settlement-based waste or mineral-mining affluents flowing into it from its tributaries. By the time they join the river, its course takes it through a steep uninhabitable landscape, and the three villages located far from its banks have helped to ensure that the river remains clean. The locals have also protested against a proposed hydroelectric project on the river, as it will affect their livelihoods, which include paddy farming, fishing, and tourism.
The river is accessible by air, with the Umroi airport located 107 kilometres away and the Guwahati airport 196 kilometres away. By rail, the Guwahati railway station is 173 kilometres from the Umngot River. Shillong, located 85 kilometres away, is a three-hour drive from the river.
The Umngot River is a sparkling and surreal sight, with its cerulean bluish-green water snaking through the lush green flora and stern vertical rock faces of the landscape. The river flows through the small village of Shnongpdeng in Dawki and into the plains of Bangladesh. The silence of the place is profound, and visitors can enjoy the lazy rhythm of the river and the melody of birds and insects. The river is also a popular spot for camping, ziplining, angling, kayaking, snorkelling, and scuba diving.
The Dawki Bridge, a suspension bridge constructed in 1932, hangs over the Umngot River and is a place of interest. A white portion of the river, caused by a rise in the current, marks the unofficial boundary between India and Bangladesh.
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Thames River, UK
The Thames River in the UK has undergone a remarkable transformation over the last 60 years. Once declared "biologically dead" by scientists at London's Natural History Museum, it is now considered one of the cleanest rivers flowing through a major city in the world.
The Thames has been London's lifeline, providing water, food, trade, and a hub for pageantry. However, for centuries, it also served as the city's sewer. As London's population grew, so did the amount of waste dumped into the river, with leaking cesspits and rubbish turning its tributaries into running sewers. In the 19th century, people regularly contracted cholera from the water, and in 1878, the sinking of the passenger steamer Princess Alice resulted in many deaths due to the ingestion of polluted water.
The turning point came in the latter half of the 20th century with the implementation of various measures. From 1976 onwards, all sewage entering the Thames was treated, and legislation between 1961 and 1995 helped raise water quality standards. The privatisation of water companies and the establishment of the National Rivers Authority in 1989, along with the introduction of biotic monitoring, further contributed to the river's recovery.
Today, the Thames supports a diverse range of wildlife, and its biodiversity has surged. However, challenges remain, with new threats from pollution, plastic, and a rising population. The river still faces issues with contaminated sediments, microplastics, and water-soluble medicines that sewage treatment plants struggle to filter out. As London's population continues to grow, the amount of waste and the use of overflow points along the river also increase, impacting the river's health.
Despite these ongoing challenges, the Thames River's recovery is an environmental success story, showcasing the positive impact of concerted efforts to improve water quality and protect this vital waterway.
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Caragh River, Ireland
The Caragh River in County Kerry, Ireland, is known for its pristine waters and lush surroundings. Located in the southwestern part of the country, the river flows through picturesque landscapes, including the rugged countryside of Kerry and the Macgillicuddy's Reeks mountain range. The river's source is a series of small lakes and streams that originate from these mountains, and it covers a catchment area of approximately 66 square miles (170 square kilometres).
The Caragh River is renowned for its exceptionally clean and unpolluted waters, a rarity among rivers worldwide. This lack of pollution makes the river a prime location for salmon fishing, attracting anglers from all over. The river produces good catches of salmon and sea trout annually, with the Caragh fisheries offering a range of fishing experiences. The upper Caragh fishery, a private stretch of approximately 15 kilometres, provides a well-developed fishing environment with excellent access and well-maintained banks. Anglers can take advantage of the many holding pools and in-stream boulders that provide resting places for salmon on their upstream journey.
The middle section of the river, known as Caragh Lake, acts as a natural reservoir, retaining water during flood conditions and slowly releasing it into the lower Caragh River. This regulation of water flow contributes to the river's clear waters even during high-water conditions, making it ideal for fly fishing. The lower Caragh fishery is particularly noted for its sea trout fishing, with trout entering the river from late March or April due to higher water levels.
The Caragh River is not just an angler's paradise but also a haven for nature lovers. The river and its surrounding areas are protected under a Special Area of Conservation, including Killarney National Park and the Caragh River Catchment. This protection ensures the preservation of the river's delicate ecosystem, including rare species such as the Kerry Slug and the Natterjack toad.
The pristine waters of the Caragh River stand in stark contrast to many other rivers worldwide, such as the Ganges in India and Bangladesh, which absorb billions of gallons of waste daily, and the Citarum River in Indonesia, which is filled with industrial waste and toxic chemicals. The Caragh River's clean waters are a testament to Ireland's commitment to conserving its natural landscapes and the health of its rivers.
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Frequently asked questions
The Tara river, which flows through Montenegro and Bosnia-Herzegovina, is known as the "Jewel of Europe". It is one of the cleanest rivers in the world and is a UNESCO protected river under the World's Natural Heritage and the World's Biosphere Reserve.
The Thames River in London is considered the cleanest river in the world. It was once declared biologically dead due to high levels of contamination. However, measures have been taken to eliminate river pollution, and the river has been restored to its pristine state.
The Umngot River, also known as the Dawki river, flows through the state of Meghalaya in India. In 2021, it was recognised as one of the world's cleanest rivers, with stunning glass-like water.
The Manzanares River in Madrid has undergone restoration, improving water quality and creating a habitat for flora and fauna. The St. Croix River in North America, a tributary of the Mississippi River, has also recovered from pollution and is now clean. Additionally, Seoul's Cheonggyecheon River was buried by a highway but has since been recovered and is now a positive example of an urban river restoration project.
