Volunteering to help the park: A work crew installs a bench near Great Falls in 2016.
Supporting park projects: Catoctin Aqueduct after collapse in 1973
Supporting park projects: Catoctin Aqueduct after restoration effort in 2011
Exploring history and nature: Sideling Hill Creek Aqueduct as viewed from the Western Maryland Rail Trail.
Protecting the canal since 1954: The association opposes Georgetown University’s plan to build a large boathouse in the park
Protecting the canal since 1954: The association opposes Georgetown University’s plan to build a large boathouse in the park
Exploring history and nature: Hikers gather at Fifteen Mile Creek Aqueduct in 2018.
Protecting the canal since 1954: Justice Douglas and eight others pause during their famous hike, which publicized the canal in 1954
Exploring history and nature: Ranger provides interpretation for hikers at Seneca Stone Cutting Mill in 2020.
Exploring history and nature: Hikers marvel at a large specimen during a tree identification walk in 2012
Volunteering to help the park: Association volunteer attaches plaque to newly installed bench in 2018.
Exploring history and nature: Association members participate in the last day of the 2009 Thru Hike at Great Falls
Volunteering to help the park: Association member helps install an identification sign at Landers in 2011
Exploring history and nature: Hikers gather at Dam 5 in 2019.
Protecting the canal since 1954: Justice Douglas and others rally against replacing the canal with a highway.
Volunteering to help the park: Association members repaint picnic tables at Swains Lock
Volunteering to help the park: Association volunteers assemble picnic table in 2018.
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Historic early 1900s image of Chesapeake and Ohio Canal at Lock 33, Maryland Heights at Harper's Ferry.
The Stone ruin on the berm side off photo is often referred to as the Salty Dog Tavern, but that building actually stood adjacent to the ruin and no longer exists. The ruin was reportedly a warehouse. Lock house no longer exists.
The lock was often damaged by flooding from the time of it's construction in 1833 to abandonment in 1924. It is constricted of Virginia Flint from a mile and a half away in Virginia, as well as some more local limestone. This lock has a more elaborate bypass flume tunnel with arch.
Stones from the next river lock ahead were reportedly used by National Park Service for repairs to lock 33.
Beyond, two former Baltimore and Ohio Railroad bridges, still active, cross the river.
B&O originally used an 1836 Bollman Bridge, and its successors on the same site, until the first of the two present bridges was completed in 1894.
The B&O constructed the second bridge in 1931 to handle heavier traffic. The original Bollman Bridge washed out in 1936.
A pedestrian lane was added to the 1894 rail bridge in the 1980s, and now serves as a connection to Harper's Ferry West Virginia. It also carries the Appalachian Trail.
Historic image of the winch house at Dam 4 on the Chesapeake and Ohio Canal, from the Thomas F Hahn collection.
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