What is Dredging a River?

The Impounded River Lagan has undergone significant transformations over the years, thanks to a series of dredging projects that have aimed to reinstate its original level and restore the surrounding environment. The latest project, which commenced in September 2019 and concluded in March 2020, was a major undertaking that required careful planning and execution.

Before the dredging project began, the Department carried out extensive investigations to assess siltation rates and determine the volume of material that had accumulated since the previous maintenance dredge in 2011. The findings led to the awarding of a £3.9m contract to local firm ABCO Marine Limited, which was responsible for removing the built-up sediment and reinstating the river's original depth.

The Impounded River Lagan has a long history of environmental issues, which had resulted in the 'city turning its back on the river.' The once-thriving waterway had become neglected, with overgrown banks, deserted landscapes, and an almost non-existent wildlife population. The air was filled with a foul smell due to decomposition in the mud, which worsened during the summer months.

Prior to the dredging project, the water quality of the River Lagan was poor, and at low tide, unsightly smelly mud flats were exposed. However, thanks to the efforts of the Department and ABCO Marine Limited, the river has undergone a remarkable transformation. The dredging works have delivered significant environmental and regeneration benefits for the city, paving the way for further investment in the area.

The legacy of these benefits relies on continued investment in dredging the Impounded River Lagan, ensuring that the progress made so far is sustained and built upon. As the river continues to flourish, it is expected to attract more visitors, promote economic growth, and enhance the overall quality of life for local residents. The success of this project serves as a testament to the importance of dredging in revitalizing urban waterways and restoring ecosystems to their former glory.

What is dredging a river