How A Lock Works
How A Lock Works
Boat Going Downstream
Virtual Lock - Downstream
Boat Going Upstream
Virtual Lock - Upstream
Unanimated Version
Boat Going Downstream
Boat enters the lock; gate closes behind it.
Water is released downstream; water level lowers in the lock.
When the water level is low enough, the gate opens and the boat leaves the lock.
Boat Going Upstream
Boat enters the lock; gate closes behind it.
Water enters from upstream; water level rises in the lock.
When the water level is high enough, the gate opens and the boat leaves the lock.