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Pennsylvania Transportation in the 1800s |
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How Does a Canal lock Work? |
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Name
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![[Picture of Lock]](Canals_files/image001.jpg)
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Canal lock on the
Delaware Canal - Over its course of 60 miles, The
Delaware Canal drops 165 feet through some twenty-three locks. Ten aqueducts carry the waterway
over small valleys and streams. Including its towpath and bank, the canal is
approximately 60 feet wide and
originally was five feet deep. |
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Use this web site -
The Friends of the Delaware Canal
(http://www.fodc.org/default.htm) to
investigate a Pennsylvania canal. Find out how a canal lock works. This site contains
information on how a canal lock works, plus much more.
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DIRECTIONS: Scroll
down and click on “How a canal lock works” Read the steps. Fill in the missing
steps in the blanks below.
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A. Going Downstream –
View the animation on the Delaware Canal web site |
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1. If the lock is
empty, the lower gate is shut and the lock filled by opening the bottom part of
the top gate. |
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2.
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3. With the bottom
part of the top gate shut and the top gate fully
closed, the bottom part of the lower gate is opened and the water in the lock is
drained until it is water level in the lock is the same as the water level below
the lock. |
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4.
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B. Going Upstream –
View the animation on the Delaware Canal web site |
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1. If the lock is not
empty, the bottom part pf the lower gate is shut and the lock emptied. |
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2.
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3. With the bottom
part of the lower gate shut and the lower gate fully closed, the bottom part of
the upper gate is opened and the lock is filled until it is water level in
the lock is the same as the water level above the lock.
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4.
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ILLUSTRATE HOW A
CANAL LOCK WORKS
Choose to illustrate
a canal boat traveling upstream or downstream. Draw a picture in the
box below to illustrate. Label and color
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| This
canal boat is moving (Circle one) Upstream Downstream
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