lock
fall structure with a fixed chamber in which the water level changes
Riverton Lock
entrance to Colbert shoals canel
Victoria Lock
canal lock in Clonahenoge, County Offaly, Ireland
De Rollen
lock in Groningen, Netherlands
Melvin Price Locks and Dam
dam in Missouri, United States of America, United States of America
Oldenburg lock
lock in Küstenkanal, Oldenburg
floodgate
adjustable gate used to control water flow
Hamstead Lock
canal lock in Berkshire, England
Hungerford Marsh Lock
canal lock on the Kennet & Avon Canal
Newbury Lock
lock on the Kennet and Avon Canal in Newbury, Berkshire, England, UK
Monkey Marsh Lock
lock on the Kennet and Avon Canal in Thatcham, Berkshire, England, UK
Wootton Rivers Lock
canal lock in Wiltshire, England
Crofton Locks
canal locks in Wiltshire, England
Alexandria Canal
canal in Virginia, United States of America
Aqueduct Lock
lock on the River Lee Navigation near Turnford, Hertfordshire, England, UK
Bingley Three Rise Locks
staircase of three locks on the Leeds and Liverpool Canal at Bingley, West Yorkshire, England, UK
Braddock Locks & Dam
dam in Allegheny County, Pennsylvania, United States of America
Cleeve Lock
lock on the River Thames in Oxfordshire, England
Fulton Lock
lock and dam on the Tennessee-Tombigbee Waterway in Itawamba County, Mississippi, United States
King's Lock
lock on the River Thames in Oxfordshire, England
Markland Locks and Dam
dam and locks on the Ohio River at Gallatin County, Kentucky, and York Township, Switzerland County, Indiana, United States
Marsh Lock
lock and weir situated on the River Thames in England near Henley-on-Thames
Stratton Lock and Dam
dam in McHenry, Illinois, USA
Mile End Lock
lock in London Borough of Tower Hamlets, London, England, UK
Pickett's Lock
lock in London Borough of Enfield, London, England, UK
Tuel Lane Lock
canal lock on the Rochdale Canal in Sowerby Bridge, England
Waltham Town Lock
lock in Hertfordshire, England, UK
Ware Lock
lock in Hertfordshire, England, UK
Pike Island Locks and Dam
dam in Ohio/West Virginia border
Swains Lock
lock and lock keeper's house located in Chesapeake and Ohio Canal National Historical Park
Templin lock
Self-service canal lock
old Magdeburg lock
demolished lock in Magdeburg, Germany