Council officials are working on the computer generated model to include more walk-through visuals, as well as full scale mock-ups of sections.
They hope it will give people an ‘accurate as possible’ representation of the £9.9 million project, which will feature walls, embankment and an overflow channel.
The model will be shared with residents at another public engagement event later this year, or early next year.
Project manager Michael Smith said: “The undertaking of further public engagement events will be restricted by Covid-19 restrictions. However, it is possible that the construction and installation of “mock-ups” could be undertaken later in the year which would supplement all the information currently held on the website.
“Feedback on the public views on the scale of defences necessary to achieve the design level of protection would assist in determining the likelihood of formal objections and thus further inform members in making decisions on scheme progression.”
Acknowledging some local opposition to parts of the scheme, such as the height and scale of some of the defences and its overall adverse effect on the town, Mr Smith said: “The project team consider that it is important to re-engage with people on the scheme and to see if any issue can be addressed before the publication process rather than after.”
Councillors have also been advised of an anticipated timescale for the works, which predict completion of construction by the end of 2026.
Meanwhile, it has also emerged that an environmental impact assessment (EIA) needs to be carried out, taking six months and at a cost of up to £70,000.
SEPA require the EIA to ascertain if the new scheme would cause a deterioration of the shape and form of the River Esk and Wauchope Water around Langholm.
They are concerned the work may lead to deterioration of the water environment beyond the location of the defences.