These pictures were taken Sept 14, 2009, and show how a boat lock works. A lock is a system used for raising and lowering watercraft between stretches of water of different levels on river and canal waterways.
First, the boat goes into the upper lock, heading east.
The upper lock gates close behind it.
The water drops (note the waterfalls behind it, generating power)
The lower lock gates open.
The boat goes out through the gate.
and down the river.
Another boat comes in through the lower gate, heading in the other direction.
The lower gates close behind it.
The water rises
The gates open
and the boat heads west.
Are there locks in your area? This one has a great parking lot and some trails. You can boat watch all day if you like.
Have another tip to offer? Send it to me or reply below and I will add it here.
Don’t forget to sign up for the newsletter! Once a week, I send updates on quilt-related information I have found while wandering the web. This might be an inspiring article, a tip or tutorial I have discovered (or written), and occasionally exclusive offers & discounts as well as immediate access to the secret page of free patterns, guides, and printables. You can follow my page on Facebook, or join the Make Believe Quilters group, too.