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en.wikipedia.org/wiki/Lock_(water_navigation)

Locks of the Panama Canal during construction, 1913. Early completely artificial canals, across fairly flat countryside, would get round a small hill or depression by simply detouring (contouring) around it. As engineers became more ambitious in the types of country they felt they could overcome ...

www.ask.com/youtube?q=Canal+Locks&v=tfWyBz5bHj8
Apr 16, 2009 ... How canals work. ... I can not explain how incorrect this video is, A lock is nothing like that on a canal.. Read more. Show less. Reply 1. Bruce K2 years ago. I understand going from higher to lower elevations, but where does the water come from to RAISE the level of locks?. Read more. Show less. Reply 1.
www.ask.com/youtube?q=Canal+Locks&v=fiMsYzL1ziU
Mar 5, 2011 ... This short film was made to support 'The Fourteen Locks Education Through Restoration Project' and although it is aimed at primary school pupils adults may also find it informative about how canal locks work. Many thanks to Chris Hopcroft for his assistance with the film.

www.rideau-info.com/canal/lock.html

How a Lock Works. A lock is a fascinating piece of engineering that allows boats to travel either uphill or downhill. Many rivers posed navigation problems for early river travelers. Locks were the solution that made these waters navigable. Most rivers have rapids, shallow rocky areas with fast flowing water. In the early history  ...

www.popularmechanics.com/technology/infrastructure/g2875/7-impressive-boat-locks

Dec 13, 2016 ... Hauling a small canoe or kayak from one body of water to another is one thing, but moving 1,000-foot-long ships across stretches with no natural rivers takes some ingenuity. Using locks—gated sections of waterways that can raise and lower water levels to move vessels from one waterway to ...

www.eriecanal.org/locks.html

The present Erie Canal rises 566 feet from the Hudson River to Lake Erie through 35 locks. From tide-water level at Troy, the Erie Canal rises through a series of locks in the Mohawk Valley to an elevation of 420 feet above sea-level at the summit level at Rome. Continuing westward, it descends to an elevation of 363 feet ...

www.encyclopedia.com/science-and-technology/technology/technology-terms-and-concepts/canal-lock

Get information, facts, and pictures about canal lock at Encyclopedia.com. Make research projects and school reports about canal lock easy with credible articles from our FREE, online encyclopedia and dictionary.

www.history.com/topics/panama-canal/videos/panama-canal-locks

The Panama Canal allows ships to travel between the Atlantic and Pacific Oceans, saving them a long journey around the tip of South America.

canalrivertrust.org.uk/news-and-views/features/different-types-of-locks

Canal locks and lifts appear all along waterways, helping boats to climb hills. They come in many varieties but our handy guide can help you tell them apart.