A new toilet block is currently being built next to the lagoon, along with showers, a disabled access ramp, new decking and landscaping. A new jetty for the Alexandra Yacht Club is also being created.
Meanwhile, a programme of keeping the water fresh is also underway, by unlocking the sluices (sliding gate) over the winter period intermittently.
Cllr Ann Holland, Executive Councillor for Culture, Tourism and the Economy, said: “The lagoon has clearly been a major success, helping to draw more visitors to the seafront and our wonderful town.
“We continually look to evolve and improve our seafront offer, seek external funding and private investment and work with our local business community to do this. This project is a great example of that, but we have not finished just yet.
“Our healthy tourism economy supports around 7,000 jobs but we should never be complacent and that is why we are ensuring that alongside the lagoon we get the complementary facilities right too, and I look forward to these being finished over the winter months. We are also undertaking maintenance to ensure the water is kept fresh.”
The ageing jetty at Three Shells Beach is also being replaced for use by the Alexandra Yacht Club and Lower Thames Rowing Club, adding to the water sports opportunities at the central seafront.
The project has been supported by £1.25m of Government Coastal Communities funding.