The towpath between Kew Bridge and Richmond will reopen next Saturday 8 November.
A reopening ceremony is due to take place at 10am near Richmond Lock.
A section of the towpath alongside Kew Gardens collapsed twelve months ago with tidal water gushing along a parallel culvert.
Those working on the repairs have faced challenging tidal and ground conditions which required additional piling and reinforcement to ensure the long-term stability of the path.
Later in the morning a very low tide is expected at 12.40pm thanks to the annual Richmond Draw-Off when lock gates stay open.