locks hydraulic engineering

Lockport from Prospect Hill.

Public domain image of an arch structure, bridge, historic place ruins, classical architecture, free to use, no copyright restrictions - Picryl description

View of locks, showing a boat locking through, Lockport, N.Y.

Picryl description: Public domain image of a canal, barge, historic place, water reflection, 19th century, free to use, no copyright restrictions.

Weigh Lock, Junction Oswego and Erie Canal, Syracuse, N.Y.

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

First lock Conestoga River. Lancaster PA. 19th century stereoscope car...

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... More

No. XI. View from Mount Holyoke in Massachusetts; No. XII. Western end...

Lock of the Lateral Canal at Columbus Ohio.

Public domain scan of the book page, free to use, no copyright restrictions image - Picryl description

[View of canal and locks, Keokuk, Iowa.]

Iowa stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who assembl... More

Entering Poe Lock, Sault Ste. Marie, Mich.

Picryl description: Public domain photo of vintage naval ship postcard, free to use, no copyright restrictions image.

[Worker sitting near the locks.] NYPL Stereoscope cards collection.

Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description

View from the head of the locks looking down, Lockport.

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

View of locks, showing a boat locking through, Lockport, N.Y.

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

[View of canal and locks, Keokuk, Iowa.]

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

Sault Ste. Marie Canal, vessels in transit.

Public domain image of a historic view of Boston Harbor, Massachusetts, free to use, no copyright restrictions - Picryl description

Conestoga at 2nd lock. Lancaster PA. 19th century stereoscope card.

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... More

W. H. William Henry Bartlett - Lockport, Erie Canal.

Public domain scan of a print with maritime landscape, ship in the harbor, sea, free to use, no copyright restrictions image - Picryl description

Little Falls, from Lovers Leap. New York Sterecope Card.

New York stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who ass... More

Canal locks, Lockport, N.Y. New York Sterecope Card.

Picryl description: Public domain photograph of a historic city, cityscape, street view, buildings, 19th-century architecture, free to use, no copyright restrictions.

Northeastern view of the locks at Lockport.

Picryl description: Public domain image related to politics, political campaigns, committee, free to use, no copyright restrictions.

At Low Level, Poe Lock, Sault Ste. Marie, Mich.

Picryl description: Public domain photo of vintage naval ship postcard, free to use, no copyright restrictions image.

View from foot of the locks looking up, Lockport.

New York State stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker w... More

Locks. New York Sterecope Card. NYPL Collection.

New York stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who ass... More

Entering Poe Lock, Sault Ste. Marie, Mich.

Public domain photo of vintage Michigan postcard, 19th century, free to use, no copyright restrictions image - Picryl description.

[Workers at the locks, Keokuk,Iowa.]

Picryl description: Public domain image of a construction site, works, 20th-century industrial architecture, free to use, no copyright restrictions.

The Locks, Sault Ste. Marie, Mich.

Picryl description: Public domain photo of vintage Michigan postcard, free to use, no copyright restrictions image.

Old Traders Lock, Sault Ste. Marie, Ont.

Picryl description: Public domain image of a historic building in Detroit, Michigan, free to use, no copyright restrictions.

At High Level, Poe Lock, Sault Ste. Marie, Mich.

Picryl description: Public domain photo of vintage naval ship postcard, free to use, no copyright restrictions image.

Worker sitting near the locks. NYPL Stereoscope cards collection.

Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description

Entrance to the harbour, Lockport.

Public domain photo of art print, 19th century, free to use, no copyright restrictions image - Picryl description.

[Workers at the canal locks, Keokuk, Iowa.]

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

View near head of the locks & Holly building, Lockport.

Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description

Canal locks, Lockport, N.Y. New York Sterecope Card.

Picryl description: Public domain photograph of a historic city, cityscape, street view, buildings, 19th-century architecture, free to use, no copyright restrictions.

[View from the head of the locks looking down, Lockport.]

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

Locks at Lockport. New York Sterecope Card.

New York stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who ass... More

Lockport N.Y. - Public domain city architecture drawing

Public domain image, drawing, American, 19th century, free to use, no copyright restrictions image - Picryl description

Picryl description: Public domain image of a ship hull, port, harbor, ...

Public domain image with Picryl description as title Public domain photograph of ship dock, harbor, free to use, no copyright restrictions image - Picryl description

View of the locks, Lockport, N.Y.

New York State stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker w... More

Little Falls, from Lovers Leap. New York Sterecope Card.

New York stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who ass... More

[View of the locks, Lockport, N.Y.]

New York State stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker w... More

Entering and Leaving Poe Lock, Sault Ste. Marie, Mich.

Picryl description: Public domain photo of vintage Michigan postcard, free to use, no copyright restrictions image.

Sault Ste. Marie Canal, vessels in transit.

Public domain image of a historic view of Boston Harbor, Massachusetts, free to use, no copyright restrictions - Picryl description

Weigh Lock, Junction Oswego and Erie Canal, Syracuse, N.Y.

Picryl description: Public domain image of the back of stereograph card, stereoscopic view, free to use, no copyright restrictions

Conestoga at 2nd lock. Lancaster PA. 19th century stereoscope card.

Public domain scan of the back of stereograph card, stereoscopic view, 19th century, free to use, no copyright restrictions - Picryl description

View from foot of the locks looking up, Lockport.

New York stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who ass... More

View near head of the locks & Holly building, Lockport.

Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description

View of canal and locks, Keokuk, Iowa.

Public domain scan of the back of stereograph card, stereoscopic view, 19th century, free to use, no copyright restrictions - Picryl description

Locks. New York Sterecope Card. NYPL Collection.

New York stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who ass... More

Sault Ste. Marie Canal, vessels in transit.

Public domain scan of the back of stereograph card, stereoscopic view, 19th century, free to use, no copyright restrictions - Picryl description

View from the head of the locks looking down, Lockport.

New York State stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker w... More

Little Falls, from Lovers Leap. New York Sterecope Card.

New York stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who ass... More

[View of the locks, Lockport, N.Y.]

Public domain scan of the back of stereograph card, stereoscopic view, 19th century, free to use, no copyright restrictions - Picryl description

Workers at the canal locks, Keokuk, Iowa.

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

View of locks, showing a boat locking through, Lockport, N.Y.

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

Little Falls, from Lovers Leap. New York Sterecope Card.

New York stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who ass... More

Canal locks, Lockport, N.Y. New York Sterecope Card.

Public domain scan of the back of stereograph card, stereoscopic view, 19th century, free to use, no copyright restrictions - Picryl description

View of locks, showing a boat locking through, Lockport, N.Y.

Picryl description: Public domain image of a canal, barge, historic place, water reflection, 19th century, free to use, no copyright restrictions.

Locks. New York Sterecope Card. NYPL Collection.

New York stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who ass... More

View of canal and locks, Keokuk, Iowa.

Iowa stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who assembl... More

Worker sitting near the locks. NYPL Stereoscope cards collection.

Public domain scan of the back of stereograph card, stereoscopic view, 19th century, free to use, no copyright restrictions - Picryl description

Locks at Lockport. New York Sterecope Card.

New York stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who ass... More

View of locks, Lockport, N.Y. - back of stereoscopic card

Public domain scan of the back of stereograph card, stereoscopic view, 19th century, free to use, no copyright restrictions - Picryl description

Weigh Lock, Junction Oswego and Erie Canal, Syracuse, N.Y.

Picryl description: Public domain image of the back of stereograph card, stereoscopic view, free to use, no copyright restrictions

View from foot of the locks looking up, Lockport.

New York State stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker w... More

View from the head of the locks looking down, Lockport.

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

Conestoga at 2nd lock. Lancaster PA. 19th century stereoscope card.

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... More

Workers at the locks, Keokuk,Iowa.

Public domain scan of the back of stereograph card, stereoscopic view, 19th century, free to use, no copyright restrictions - Picryl description

Locks at Lockport. New York Sterecope Card.

New York stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who ass... More

Workers at the canal locks, Keokuk, Iowa.

Public domain scan of the back of stereograph card, stereoscopic view, 19th century, free to use, no copyright restrictions - Picryl description

View of locks, showing a boat locking through, Lockport, N.Y.

New York State stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker w... More

Conestoga at 2nd lock. Lancaster PA. 19th century stereoscope card.

View from the head of the locks looking down, Lockport.

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

Locks at Lockport. New York Sterecope Card.

New York stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who ass... More

Locks. New York Sterecope Card. NYPL Collection.

New York stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who ass... More

View near head of the locks & Holly building, Lockport.

New York State stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker w... More

View from the head of the locks looking down, Lockport.

New York State stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker w... More

View of canal and locks, Keokuk, Iowa.

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

First lock Conestoga River. Lancaster PA. 19th century stereoscope car...

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... More

View of the locks, Lockport, N.Y.

Public domain scan of the back of stereograph card, stereoscopic view, 19th century, free to use, no copyright restrictions - Picryl description

First lock Conestoga River. Lancaster PA. 19th century stereoscope car...

Public domain scan of the back of stereograph card, stereoscopic view, 19th century, free to use, no copyright restrictions - Picryl description

View of locks, showing a boat locking through, Lockport, N.Y.

New York State stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker w... More

View of canal and locks, Keokuk, Iowa.

Public domain scan of the back of stereograph card, stereoscopic view, 19th century, free to use, no copyright restrictions - Picryl description

View from foot of the locks looking up, Lockport.

New York State stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker w... More

Canal locks, Lockport, N.Y. New York Sterecope Card.

Public domain scan of the back of stereograph card, stereoscopic view, 19th century, free to use, no copyright restrictions - Picryl description

Sault Ste. Marie Canal, vessels in transit.

Public domain scan of the back of stereograph card, stereoscopic view, 19th century, free to use, no copyright restrictions - Picryl description

First lock Conestoga River. Lancaster PA. 19th century stereoscope car...

No. XI. View from Mount Holyoke in Massachusetts; No. XII. Western end...

Public domain reproduction of illuminated book page, free to use, no copyright restrictions image - Picryl description

Government Lock, High Bridge, Ky.

Picryl description: Public domain image of a historic building in Detroit, Michigan, free to use, no copyright restrictions.

Workers at the locks, Keokuk,Iowa.

Picryl description: Public domain image of a construction site, works, 20th-century industrial architecture, free to use, no copyright restrictions.

View of locks, Lockport, N.Y. - stereoscopic view, public domain photo...

New York stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who ass... More

Weigh Lock, Junction Oswego and Erie Canal, Syracuse, N.Y.

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

View near head of the locks & Holly building, Lockport.

New York State stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker w... More