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Guide to Common Canal Structures 		spacer 6/12
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Lock 0 Power House 0 Gate Cabinet
Lock   Power House   Gate Cabinet
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Lift Bridge 0 Dam 0 Guard Gate
Lift Bridge   Movable Dam   Guard Gate
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Historic Lock 0 Aqueduct 0 Restored Aqueduct, Camillus
Historic Lock   Aqueduct   Restored Aqueduct
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Dry Dock, Chittenango 0 Bowstring Bridge 0 Lock Operator
Dry Dock   Bowstring Truss Bridge   Lock Operator
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guard gate / guard lock 0
East Guard Lock, Pittsford 0
 
East Guard Lock, Rochester
 
This type of gate helps to isolate sections of the canal in case of emergency, such as a break in the canal wall, accident, or extreme high water. They are also used when a section of the canal needs to be drained for maintenance or winter freeze protection.
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