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Gallatin County, Kentucky, 2022:  A tugboat and its cargo leaves the locks and Markland Lock and Dam.
Lock and Dam at St. Anthony Falls in downtown Minneapolis, Minnesota, USA - Part of the Central Mississippi Riverfront Regional Park
close up cement wall of dam in country Thailand
Dam water outlet.  Done in black and white.
Closed lock chamber gates. Tchaikovsky shipping lock part of Votkinsk hydroelectric complex located on Kama River, Russia. Industrial landscape.
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.
Tranquil Autumn Landscape over the O'Shaughnessy Reservoir Dam in Dublin, Ohio, USA
St. Catharines, Canada.
Barge entering the Wilson Lock in Florence, AL
Spillway waters flowing into reservoir. Desnogorsk reservoir of Smolensk power station, Russia
Overhead Shot of Dam and Lock on the Ohio River
dam
Wheeler Dam, AL, 2020:Wheeler has two locks, one 110-by-600 feet and the other 60-by-360 feet. They lift and lower barges as much as 52 feet between Wheeler and Wilson reservoirs.
Branson, Missouri, USA. 4 June 2023. Road along the Table Rock Dam in Branson, with a phone mast
RiviAre-des-Prairies power station
Gongju, South Korea - May 27, 2021: Gongju Weir, a modern hydraulic structure on the Geum River, featuring large movable gates designed for flood control, water management, and renewable energy generation.
River locks located on the Ohio River in Hannibal.
Welland Canals Parkway and Welland Canal Lock view, St. Catharines, Canada.
FORT MILL, SOUTH CAROLINAUNITED STATES – May 19, 2019: Man fishing  of of the boat dock at Lake Wylie dam in Fort Mill, South Carolina.
Conowingo, USA - January 20, 2018. The Conowingo Dam in the lower Susquehanna River, Maryland, USA
Intersection of Mouse River and Zuid-Willems Canal, Bosscherveld lock, boats, houseboats and green vegetation against grey sky in background, cloudy day in Maastricht, South Limburg, Netherlands
Engineering concept.
Old hydroelectric dam showing spillways and power lines
Welland Canal Lock #4
Entering Lock and Dam No 11 on Upper Mississippi River near Dubuque
Coal loader tower on the Danube near Esztergom on a cloudy day at sunset
Wheeler Dam, AL, 2020: Wheeler Dam is 72 feet high and stretches 6,342 feet across the Tennessee River.
Aerial top down view of a hydroelectric power station and green river and lake.
Gates opening at lock and dam 7 on Upper Mississippi River in La Crescent Minnesota
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
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