Editing Calder and Hebble Navigation (section)

===Construction===
Construction started in November 1759,{{sfn |Hadfield |1972 |p=48}} with Smeaton acting as engineer.{{sfn |Nicholson |2006 |p=40}} By November 1764, the navigation was open as far as [[Brighouse]], some {{convert|16|mi|km}} from Wakefield. Having borrowed £56,000, factions arose within the commissioners, with some wanting to stop at Brooksmouth, where the Rivers Hebble and Calder meet, and others wanting to raise more money and complete the scheme. The second option gained most support, and a new committee was set up, who asked [[James Brindley]] to take over from Smeaton in 1765. The work was nearly completed by 1767, but serious floods in October caused some damage, with further damage caused by more floods in February 1768. Brindley appears to have left by mid-1766, and the Commissioners re-appointed Smeaton in 1768, to complete the work. Banks were repaired and floodgates built at the start of some of the cuts. The work was just complete when a further flood caused so much damage that the only option was to close the navigation again.{{sfn |Hadfield |1972 |pp=48–53}}

{{Infobox UK legislation
| short_title           = Calder and Hebble Navigation Act 1769
| type                  = Act
| parliament            = Parliament of Great Britain
| long_title            = An Act for extending the Navigation of the River Calder to Salter Hebble Bridge, and to Sower by Bridge, in the county of York, and for repealing an Act for that Purpose.
| year                  = 1769
| citation              = [[9 Geo. 3]]. c. 71
| introduced_commons    = 
| introduced_lords      = 
| territorial_extent    = 
| royal_assent          = 21 April 1769
| commencement          = 
| expiry_date           = 
| repeal_date           = 
| amends                = 
| replaces              = 
| amendments            = 
| repealing_legislation = 
| related_legislation   = 
| status                = 
| legislation_history   = 
| theyworkforyou        = 
| millbankhansard       = 
| original_text         = 
| revised_text          = 
| use_new_UK-LEG        = 
| UK-LEG_title          = 
| collapsed             = yes
}}
By this time, £64,000 had been spent on the scheme, of which £8,100 had come from tolls and the rest had been borrowed. The Commissioners felt unable to borrow more money, and so a second act of Parliament, the '''{{visible anchor|Calder and Hebble Navigation Act 1769}}''' ([[9 Geo. 3]]. c. 71), was obtained on 21 April 1769, which formally created the Company of Proprietors of the Calder and Hebble Navigation. This consisted of all of the 81 people who had loaned money to the original scheme, and these loans were converted into £100 shares. Additional shares could be issued, and the company could borrow up to £20,000, with the future tolls used as security.<ref name=priestley/> Before the act, the scheme had been known as the Calder Navigation or Upper Calder Navigation, and this was the first use of the Calder and Hebble title. The act was the first navigation act to include a clause which limited dividends, insisting that tolls should be reduced if the dividend exceeded ten per cent.{{sfn |Hadfield |1972 |p=54}} Construction of the initial phase was finished in 1770,{{sfn |Nicholson |2006 |p=40}} at a total cost of around £75,000.{{sfn |Hadfield |1972 |p=54}}

There were initial problems with the water supply to the Sowerby Bridge pound, which Smeaton was asked to address. He suggested a tunnel from Hollins Mill, similar to those used for draining collieries. Construction began in June 1772, and was completed in March 1794.<ref>{{harvnb |Hadfield |1972 |p=55}}</ref> Other improvements followed, with a new cut between Shepley Bridge and [[Mirfield]] started in December 1775 supervised by William Jessop, and the raising of water levels in 1776 to allow boats to carry additional cargo. A new cut at Brighouse was added in 1780, while the two staircase locks at Salterhebble and the single lock at Brooksmouth were replaced at Smeaton's suggestion by three new locks in 1782.{{sfn |Hadfield |1972 |pp=56–57}}