ALERT! Berks County South Campus Closed Monday, October 5: The Berks County South Campus will be closed to staff and the public on Monday, October 5, to complete a scheduled electrical utility project. The South Campus Building will be without power from 8 am to 5 pm while Met-Ed conducts this work. For safety reasons, no one will be permitted to enter or access the South Campus building for any reason between 8 am to 5 pm on October 5.

The County appreciates the public’s understanding and apologizes for any inconvenience this temporary closure may cause.

How A Lock Works

How A Lock Works

Animated Version

Boat Going Downstream

Virtual Lock - Downstream

Virtual Lock - Downstream

Boat Going Upstream

Virtual Lock - Upstream

Virtual Lock-Upstream

Unanimated Version

Boat Going Downstream

Boat enters the lock; gate closes behind it

Boat enters the lock; gate closes behind it.

Water is released downstream; water level lowers in the lock.

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.

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.

Boat enters the lock; gate closes behind it.

Water enters from upstream; water level rises in the lock.

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.

When the water level is high enough, the gate opens and the boat leaves the lock.