In late 1790, Fletcher widened and deepened the head race between Wet Earth and Botany Bay Collieries into a section of canal, which opened in 1791 and became known as
Fletcher's Canal. It had no onward connection and for several years can only have been used to carry coal to a wharf for transshipment. In 1796, the
Manchester, Bolton and Bury Canal opened between Rhodes Lock (across the Irwell from Wet Earth Colliery) and
Salford. The
Clifton Aqueduct took the canal across the river downstream of Botany Bay Colliery but disputes over water rights and usage meant it took five years for Fletcher's Canal to be linked. The Manchester, Bolton and Bury Canal relied on agreements with local mill-owners to limit how much water the canal could take from the Irwell. No water from the canal could flow into Fletcher's Canal. Fletcher had built a lock in anticipation of linking to the Manchester, Bolton and Bury Canal but its fall was too great for the water level in the Manchester, Bolton and Bury Canal. The canal company consulted
Benjamin Outram who recommended the construction of a second lock in Fletcher's Canal but Fletcher enlarged the lock to create a chamber long by wide that had a fall of and could accommodate three narrow boats side by side. Once the link to the Manchester, Bolton and Bury Canal opened in 1801, Fletcher could send coal
Manchester some away. Following the model of the
underground canals that Brindley had developed to extend the
Bridgewater Canal into the
Worsley coal mines, Fletcher had short underground connecting arms cut at the Wet Earth, Botany Bay and Spindle Point Collieries each terminating at a basin next to the shaft, enabling coal to be loaded directly onto
barges at the pit head. ==Later life==