The history of locks and weirs and how they work.
Ref: LIT 3781 PDF, 146KB, 2 pages
This file may not be suitable for users of assistive technology. Request an accessible format.
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email firstname.lastname@example.org. Please tell us what format you need. It will help us if you say what assistive technology you use.
The history of locks and weirs and how they work. Also encourgaing everybody to be safe near water by giving important warnings about the hidden dangers of the river.