emptying lock

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• Lock (water transport) — Canal lock and lock keeper s cottage on the Aylesbury Arm of the Grand Union Canal at Marsworth in Hertfordshire, England …   Wikipedia

• Snakeholme Lock — is a brick chamber canal lock on the Driffield Navigation, in the East Riding of Yorkshire, England. It is notable in being a staircase lock, but only the upper lock is still used. LocationIt is 0.5 mile (0.8 km) south east from the village of… …   Wikipedia

• Struncheon Hill Lock — was built as a later addition to the Driffield Navigation in the East Riding of Yorkshire, England. It improved access to the next section of water during low tide conditions, and is the first lock. Some times known as Top Hill Low , which is the …   Wikipedia

• canals and inland waterways — ▪ waterway Introduction       natural or artificial waterways used for navigation, crop irrigation, water supply, or drainage.       Despite modern technological advances in air and ground transportation, inland waterways continue to fill a vital …   Universalium

• Murray River — For other uses, see Murray River (disambiguation). Coordinates: 35°33′32″S 138°52′48″E / 35.55889°S 138.88°E / 35.55889; 138 …   Wikipedia

• Mississippi National River and Recreation Area — Mississippi National River and Recreation Area …   Wikipedia

• Panama Canal — a canal extending SE from the Atlantic to the Pacific across the Isthmus of Panama. 40 mi. (64 km) long. * * * Canal of the lake and lock type, Panama. Extending across the Isthmus of Panama, it connects the Atlantic and Pacific oceans. It is… …   Universalium

• Manchester Ship Canal — The Stolt Kittiwake heading toward the Mersey Estuary, 2005 Principal engineer Edward Leader Williams Date of act …   Wikipedia

• Melton Hill Dam — Melton Hill Lock and Dam. View is downriver to the west. The Tennessee Route 95 bridge can be seen downriver. Official name Melton Hill Dam Location Roa …   Wikipedia

• List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have …   Wikipedia

• Central vacuum cleaner — The power unit of a typical central vacuum cleaner for residential use A central vacuum cleaner (also known as built in or ducted) is a type of vacuum cleaner appliance, installed into a building as a semi permanent fixture. Central vacuum… …   Wikipedia