Section XII No Power to Undertakers or Commissioners; to pull down Nottingley Mill Dam, or to make new Cuts between the said Dam and the River Ouze; (Exception) &c.

And to the end that the makeing the said Rivers navigable portable and passable for Boates Barges and Lighters may not be prejudiciall to the Navigation on the River Ouze by diverting the Tide flowing up the same or drawing more of the Tide Water from thence into the River of Aire then hath usually flowed up the same Be it enacted by the Authority aforesaid That nothing in this present Act contained shall give Power or Authority to the said Undertakers their Heires or Assignes or to the said Commissioners to pull downe or demolish Knottingley Mill Dam standing upon the said River of Aire or to make any new Cutts or Passages for Water through or upon the firme Ground between Knottingley Dam aforesaid and the River of Ouze (otherwise than for the makeing or erecting of One or more Lock or Locks) or to doe any other Matter or Thing to divert the Streame of the said River of Aire out of its present Course or Channell betweene Knottingley Dam aforesaid and the said River of Ouze or to draw more of the Tide-water from thence into the said River of Aire than hath usually flowed up the same Any thing herein contained to the contrary thereof in any wise notwithstanding