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Filter: Subject of locks (hydraulic engineering)
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| Description: | A boat entering a hydraulic lift lock located in Peterborough, Ontario, Canada. The lock structure is an imposing series of steel and concrete towers, with... |
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| Description: | A boat half way up a hydraulic lift lock located in Peterborough, Ontario, Canada. The lock structure is an imposing series of steel and concrete towers, w... |
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| Description: | A hydraulic lift lock with a boat at a full vertical elevation of 66 feet in Peterborough, Ontario, Canada. The lock structure is an imposing series of ste... |
| Date: | 1904 |
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| Description: | Official opening of the sixty-six foot Peterboro hydraulic lift lock, built in 1904 on the Trent Canal. People gather in boats and along the shore to celeb... |
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| Description: | Profile view of the sixty-six foot Peterboro hydraulic lift lock, built in 1904 on the Trent Canal. People gather on the top of the lock. The lift lock is ... |
| Date: | 07 04 1954 |
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| Description: | Locktender Earl Wood swinging open the heavy lock gate for a speedboat operator passing through the lock on the Yahara River at Tenney Park. A sign above t... |
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