Nelson’s giant storm tank will hold almost two million litres of water
Overview
A vast new underground stormwater storage tank that is 20 metres deep and 15 metres wide and hold almost two million litres of water – the equivalent of 25,000 bathtubs of storm water - has been constructed in Nelson.
Challenge
A combination of an increasing population in the area and the impact of climate change created a need to introduce extra capacity in Pendle’s sewer system.
The geography of the area meant that the only suitable location for the tank was within an industrial estate in the car park of a local business. With close consultation, the project was able to be delivered and access maintained to all businesses.
Solution
The creation of a vast underground storm water tank that will act as a ‘holding area’ for the extra rainwater that enters the sewer network during times of heavy rainfall. Holding it back means it isn’t all hitting the wastewater treatment works at the same time and the system is less likely to be overwhelmed.
Outcome
Projects like this will form part of our commitment to create better rivers. We are planning on investing £729 million to reduce spills from 91 storm overflows in Lancashire, as part of a proposed £13.7 billon investment to make a stronger, greener, healthier North West.