In 2003 the Wild Ennerdale partnership, a collaboration between The National Trust, The Forestry Commission, United Utilities and Natural England, began the longest running ecological restoration project in the UK. As part of the project, the River Liza, flowing through the glacial valley in Cumbria was re-wilded, returning its flow to the course of nature.
In the UK at present, less that 15% of rivers are considered to have natural flows. The majority have human influence whether it be through draining, controlling for water supplies, hydropower or for recreational activities.
The River Liza is now one of Englands most naturally dynamic river systems and home to an increasing population of one of the countries rarest fish species, the Arctic Char.