How a Lock Works

How a Lock Works (HM29SK)

Location: Muncy, PA 17756 Lycoming County
Buy Pennsylvania State flags at!
Country: United States of America
Buy United States of America flags at!

N 41° 11.54', W 76° 48.178'

  • 0 check ins
  • 0 favorites
Canals are long flat waterways that do not follow the slope of the land, as do rivers and streams. To travel uphill or downhill, canal boats were raised or lowered in a lock. When a canal boat approached a lock, the captain would blow a horn (sometimes a conch shell) alerting the lockkeeper, whose job was to open and close the lock gate.
Once inside the lock, a crewmember would jump ashore and wrap a rope around a snubbing post, stopping the boat. Then the lockkeeper closed the gate and either raised or lowered the water, depending upon where the boat was headed. When the water in the lock equaled the next level, the gates were opened and the canal boat continued its journey.
[Left side photo/illustration caption reads]
Boats traveling upstream on the canal would enter locks like these, then the water level would raise them about 6 feet to the next level.
Pennsylvania Canal Packet Boat
Muncy Historical Society volunteers reconstructed an authentic 1860s Canal Packet Boat after salvaging the cabin.
The Packet Boat is a traveling educational exhibit. In 2004, Muncy Historical Society received recognition from both the American Association of State & Local History and the PA Federation of Museums and Historic Organizations for preserving the Packet Boat.
Boat builders, in the photograph at

right, are William Poulton, Dick Gottschall, Howard Breber & Kay Remsnyder.
HM NumberHM29SK
Placed ByMuncy Historical Society and Museum of History, PA DCNR, Susquehanna Greenway, et al
Marker ConditionNo reports yet
Date Added Wednesday, July 25th, 2018 at 7:01pm PDT -07:00
Sorry, but we don't have a picture of this historical marker yet. If you have a picture, please share it with us. It's simple to do. 1) Become a member. 2) Adopt this historical marker listing. 3) Upload the picture.
Locationbig map
UTM (WGS84 Datum)18T E 348806 N 4561675
Decimal Degrees41.19233333, -76.80296667
Degrees and Decimal MinutesN 41° 11.54', W 76° 48.178'
Degrees, Minutes and Seconds41° 11' 32.4" N, 76° 48' 10.68" W
Driving DirectionsGoogle Maps
Area Code(s)570
Closest Postal AddressAt or near 585 Pepper St, Muncy PA 17756, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

Is this marker missing? Are the coordinates wrong? Do you have additional information that you would like to share with us? If so, check in.

Nearby Markersshow on map
Check Ins  check in   |    all

Have you seen this marker? If so, check in and tell us about it.

Comments 0 comments

Maintenance Issues
  1. Is this marker part of a series?
  2. What historical period does the marker represent?
  3. What historical place does the marker represent?
  4. What type of marker is it?
  5. What class is the marker?
  6. What style is the marker?
  7. Does the marker have a number?
  8. What year was the marker erected?
  9. This marker needs at least one picture.
  10. Can this marker be seen from the road?
  11. Is the marker in the median?