1. Chena River. Frozen Chena River in Fairbanks, Alaska has been known to reach temperatures as low as -20 degrees Fahrenheit during winter months.
People Also Ask
The high altitude of its source contributes to extremely cold temperatures, which are on average slightly above the freezing point. Cold river temperatures are concentrated in the Upper Neretva. The Neretva is also considered a karst river.
Almost all of the UK's waterways are now considered too polluted to swim in. A 2022 House of Commons Committee report on the state of UK rivers concluded that no river in England was free from chemical contamination. Only 14 per cent of English rivers, it added, had a 'good' ecological status.
In England and Wales:There is a right to swim in waters that are navigable and open to powered boats. Many have argued, based on detailed research, that there is a 'public right of navigation' on all rivers that can be navigated by any non-powered boat, and therefore a right to swim.