 Stanton Ironworks expressed interest in purchasing Mapperley reservoir when the National Coal Board sold the Shipley estates in 1966, but there were objections to their intent to raise and lower the water levels as required.A section of the canal above lock 3 remains in water, although the lock gates have been removed and replaced by weirs.Beyond this section, footpaths follow the course of the canal as far as Hallam wharf.