Pipe repairs stabilise Widewater Lagoon by March 2026
Walk the seafront at Lancing and you pass a long, narrow pool-Widewater Lagoon. On 16 January 2026, the Environment Agency announced repairs to its mitigation pipe from late January to the end of March 2026, a short project designed to keep the lagoon’s water levels suitable for the wildlife that depends on them.
Think of the mitigation pipe as a controlled doorway between sea and lagoon. On high tides it lets in a measured amount of seawater so the lagoon doesn’t drop too low or turn too fresh. Routine checks found the seaward section and its timber support worn, so both will be replaced using the existing Shoreham and Lancing beach management budget.
Quick explainer: saline lagoons are sensitive habitats where saltiness and depth swing with rain and tide. The UK has about 360 of them covering roughly 5,200 hectares, with 36 species closely tied to lagoons and 25 found only in them. Keeping conditions steady helps those specialists persist.
In calm spells, a lagoon can form layers, with fresher water resting above saltier water. Without occasional exchange with the sea, deeper water can slip low on oxygen, putting pressure on wildlife. Managed seawater top‑ups help avoid extremes in both depth and salinity.
What you’ll notice on site is limited to a small area. Access to the beach right next to the works will be restricted for a time, and weekend activity may be needed to match tides. The Agency says it will do its best to keep disruption down while the repairs are finished.
The Environment Agency says it has planned the scheme with Tom Rutland MP, the World of Widewater community group, Lancing Parish Council and Adur & Worthing Council. Locally, the lagoon is managed by Lancing Parish Council, with volunteers and partners helping to care for the site through the seasons.
If you’re new to the area, the lagoon sits between the beach and the A259 (Brighton Road), held in place by a man‑made shingle bank. That barrier explains why a purpose‑built pipe matters: natural exchange with the sea is limited, so controlled top‑ups keep the balance right.
What this means for you as a learner or teacher is a live case study in coastal science. Try sketching the system: rainfall adds freshwater, sun and wind take water away, and high tides bring in saltwater via the pipe. After a storm or a spring tide, compare bird activity and the waterline; the information panels installed by the local ornithological society offer helpful context while you observe.
This work is time‑limited and practical. The goal is a reliable pipe before spring, so Widewater remains a safe place for birds, invertebrates and visitors alike. The schedule runs from late January until the end of March 2026, weather and tides permitting.
If you have questions, the Environment Agency lists a public contact for updates: 03708 506506, or email SLTSDN.APadur.arun@environment‑agency.gov.uk. It’s a small intervention with a clear lesson: careful water management keeps a valued local habitat in good shape for the long term.