Chesapeake and Ohio Canal National Historical Park
The Seneca Creek Aqueduct, or Aqueduct Number One, Lock 24, and the lockhouse were built of Seneca Red Stone quarried nearby. This same distinctive sandstone was used to construct the Smithsonian Castle on the Washington Mall.
(Inscription next to the image on the top right)
The Riley name is forever linked to Lock 24. The Riley family (right) lived in the lockhouse for many years. After John Riley (on left in photo) died, Mrs. Riley took over duties as lockkeeper and had over 45 years of service here.
(Inscription over the image in the bottom right)
A canal boat entering Seneca Aqueduct is carried over the Seneca Creek.
Erected by National Park Service US Department of Interior.
Marker series. This marker is included in the Chesapeake and Ohio Canal marker series.
Location. 39° 4.127′ N, 77° 20.449′ W. Marker is in Seneca, Maryland, in Montgomery County. Marker is on
Other nearby markers. At least 8 other markers are within walking distance of this marker. The Seneca Aqueduct (a few steps from this marker); Rowser’s Ford (a few steps from this marker); Watering the Canal (approx. 0.7 miles away); a different marker also named Seneca (approx. 0.7 miles away); Seneca Store (approx. ¾ mile away); Seneca Mill (approx. 0.8 miles away); a different marker also named Seneca Store (approx. 0.8 miles away); a different marker also named Rowser’s Ford (approx. 0.9 miles away). Click for a list of all markers in Seneca.
Categories. • Waterways & Vessels •
Credits. This page originally submitted on , by Don Morfe of Baltimore, Md 21234. This page has been viewed 159 times since then. Photos: 1, 2, 3, 4, 5, 6. submitted on , by Don Morfe of Baltimore, Md 21234. 7, 8, 9. submitted on , by Allen C. Browne of Silver Spring, Maryland. • Bill Pfingsten was the editor who published this page. This page was last revised on September 9, 2016.