There is reference to continuing use of the flash lock and winch at the weir until the middle of the nineteenth century. The channel downstream of the lock which takes navigation clear of the weir and weir pool was excavated in 1825. The lock was completely rebuilt in 1870 after years of complaint about its condition. In 1884 the new weirs were built and after public complaints the walkway was built to reopen the ancient right of way. The lock was rebuilt in 1994.