Locks on the Chesapeake and Ohio Canal

rdf:langString Locks on the Chesapeake and Ohio Canal

rdf:langString MD-30

rdf:langString MD-27

rdf:langString MD-27-A

rdf:langString Goose Creek River Lock

rdf:langString Shenandoah River Lock

rdf:langString Shephderstown River Lock

rdf:langString Shenandoah River Lock on the canal, across the river from Harpers Ferry. The two stones at the lower right corner are what is left of the lock. Canal prism itself is on the left of the towpath.

rdf:langString Drawing of Lock 20, showing paddle valve and conduits in lock masonry.

rdf:langString Goose Creek River Lock on the Chesapeake and Ohio Canal, where it opens to the Potomac River. Goose Creek itself is on the Virginia shore on the other side of the river, just upstream of this photo..

rdf:langString Here the upper gate is below the breast wall, and there is no wicket in the lock masonry, i.e. the recess where the upper gate fits in .

rdf:langString Drawing of an 1830 design lock , here Lock #35 . Note how in the drawing, the gates are BELOW the breast wall, and there are no conduits in the masonry.

rdf:langString Paddle valve in wicket, in the lock masonry . This valve connected to a wicket stem .

rdf:langString Another example of the upper gate below the breast wall. Again, no wicket in the lock masonry .

rdf:langString Wicket stem, sticking up through masonry of Pennyfield Lock, originally to open and close wicket. .

rdf:langString Shepherdstown river lock, below Lock 38. When the dam washed out in 1889, this lock was made redundant, and was abandoned.

rdf:langString Openings to culverts to fill the lock chamber, indicated with yellow arrows .

rdf:langString Examples of the 1828 lock design .

rdf:langString Examples of the 1830 lock design

rdf:langString md0010

rdf:langString md0682

rdf:langString md0942

rdf:langString Lock_20_Chesapeake_and_Ohio_Canal_drawing_from_HABS.png

rdf:langString Goose_Creek_Lock_from_Chesapeake_and_Ohio_Canal_entering_Potomac_River.jpg

rdf:langString Culvert_Lock_Valve_Violettes_Lock.jpg

rdf:langString Culvert_valve_stem_on_Pennyfield_Lock.jpg

rdf:langString Lock_13_C_and_O_Canal.jpg

rdf:langString Lock_58_C_and_O_From_NPS.jpg

rdf:langString Lock_culverts,_indicated_with_arrows.jpg

rdf:langString Shepherdstown_river_lock_on_chesapeake_and_Ohio_canal.jpg

rdf:langString Lock_35_Chesapeake_and_Ohio_Canal_drawing_from_HABS.png

rdf:langString Shenandoah_River_Lock_on_Chesapeake_and_Ohio_Canal.jpg

rdf:langString no

rdf:langString Chesapeake & Ohio Canal, Locks 63 1/3, 64 2/3, & 66, State Route 51, Town Creek, Allegany County, MD

rdf:langString Chesapeake & Ohio Canal, Lock No. 32, Mile 60.7, Sharpsburg, Washington County, MD

rdf:langString Chesapeake & Ohio Canal, Lock 33 Complex, Mile 60.7, Sharpsburg, Washington County, MD

rdf:langString The Locks on the Chesapeake and Ohio Canal, located in Maryland, West Virginia, and Washington, D.C. of the United States, were of three types: lift locks; river locks; and guard, or inlet, locks. They were numbered 1 to 75, including two locks with fractional numbers (63+1⁄3 and 64+2⁄3) and none numbered 65. There is also the Tidewater Lock, sometimes called Lock 0, lock at the downstream end of the canal in Washington, D.C., where Rock Creek flows into the Potomac River. The fractional numbering arose because locks 70–75 were completed in 1842, before locks 62 and 66. It was found that the level of the canal between locks 62 and 66 could be raised in three steps instead of four. So the additional locks through there were numbered 1+1⁄3 steps apart (62, 63+1⁄3, 64+2⁄3, and 66) so that the other locks, already completed, did not have to be renumbered. While one source states that it takes about 10 minutes for a boat to lock through, experiments done in the 1830s show that it was possible for a boat to go through in 3 minutes on average and as fast as 2+1⁄2 minutes, while in 1897, it was shown that steamboats took 5 or 7 minutes to lock through going upstream or downstream (respectively).