Photograph as originally submitted to this page in the Historical Marker Database www.HMdb.org. Click on photo to resize in browser. Scroll down to see metadata.

Photographer: Allen C. Browne
Taken: May 3, 2017
Caption: How a Lock Works — Boat Moves On
Additional Description: With water levels equal, the locktender opens the downstream gates. The mules are hitched and the boat moves on.Close-up of image on marker
Submitted: May 5, 2017, by Allen C. Browne of Silver Spring, Maryland.
Database Locator Identification Number: p381770
File Size: 0.665 Megabytes

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