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Finistere, France - September 30, 2015: This is the River Aulne, a canalised river which is part of the Nantes-Brest canal in a rural area of inland Finistere, Brittany, France. It is a warm sunny day in late summer / early autumn, September. There are lock gates. There are upturned boats in the foreground. There is a family fishing and sitting on the lock.
A tranquil canal winding its way through a tranquil suburban neighborhood, lined with lush trees
Algae Lake Okeechobee Florida
A lock on a man-made tributary diverting water from the natural river to the east  to overcome the annual variances in water depth on the river in order to maintain the shipping trade along the Mississippi River in the central United States.  This aerial view is just outside of St. Louis, Missouri on the Illinois side of the river.
Sunny Summer day landscape of a recreational trail beside the remains of a lock on the Hennepin Canal in Northern Illinois.
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Mammoth Spring SP - Dam & Pool - 1998. Scanned from Kodachrome 64 slide.
Welland Canal Lock #4
Aerial view closed canal gates with different water surface levels part of Panama Canal.
Scenic roads and river in Historic District, Fort Monroe in Hampton, Virginia: trees and houses by the river from above
The Pennyfield Lock has been restored on the C&O Canal and appears in working order except for the leakage. Otherwise, yet another C&O Canal picture in the heat of summer. But it is chained and padlocked, I mean a locked lock, couldn't resist.
View of water gates used to control flow of water through the California Aqueduct, as is flows southward.\n\nTaken near Los Banos, California
The historic Channahon Lock Number 7 on the I & M canal in morthern Illinois.
Ship leaves lock, Esna locks, Esna, River Nile, Egypt. Originally constructed during the Ptolemaic era to control the flow of the Nile, it preserves and stores water for agriculture and improves navigation, Esna Lock and weir barrage connect the upper and lower parts of the river and are essential for transportation of passengers in river cruise ships and for freightThe River Nile has always and continues to be a lifeline for Egypt. Trade, communication, agriculture, water and now tourism provide the essential ingredients of life - from the Upper Nile and its cataracts, along its fertile banks to the Lower Nile and Delta. In many ways life has not changed for centuries, with transport often relying on the camel on land and felucca on the river
Potomac, MD, USA - August 19, 2022: Image is of Canal Lock 19 of the C&O canal in Potomac, MD. The image is  taken from the bridge beside the canal.
Old Iron Bridge in Piedmont
Locks on the Tennessee River.
Hampton River, view from E Pembroke Ave of Hampton, Virginia. USA
Inside the lock at Lock and dam 13 on the Arkansas River in Barling.
Ships entering Gatun Locks from the Atlantic in the Panama Canal. Ship on right is Panamax bulk vessel and carries grain, ship on left is a cruise ship.
Water Leaking Through Canal Lock Door
A canal along the Mississippi River  near St. Louis with locks to control the depth of the river to maintain year-round shipping capabilities from the northern states through to the Gulf of Mexico.
Rubber marine fender of black color and square shape attached to concrete dock with metal chain. Around are floating plastic bottles as a garbage and pollution. On yellow bollard is mooring rope.
Closing gates at Gatun locks part of Panama Canal in aerial view from passing cruise ship surrounded by concrete walls.
The river in the morning
Lock and Dam 15 on Mississippi River on Rock Island Illinois, USA.
Frederick is a city and the county seat of Frederick County in the U.S. state of Maryland. It is part of the Baltimore–Washington Metropolitan Area
Pedro Miguel locks on the Panama canal.. Panama canal transit
St. Catharines, Canada.
Free Images: "bestof:Lock 9 on the Tidewater Canal.JPG Lock 9 on the Tidewater Canal at Lapidum Maryland Photo added to illustrate that article self-made photo taken by uploader"
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