Labels:text | screenshot | font OCR: Leonardo offers a generalized discussion on maintenance and control of a river: "It is possible to devise obstacles that will protect the riverbanks against the friction of the water current." A This is the most important statement on this page. Leonardo proposes establishing a practical branch of engineering dedicated to the creation and use of obstacles to control the flow of a river and the deposition of sediment. His plan is to shift the main current of the river toward the middle of its channel to
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