Chesapeake and Ohio Canal National Historical Park | LOCKS AND LOCKHOUSES


C & O CANAL LOCKS AND LOCKHOUSES MAP


NOTE: Sections of the towpath, locks and other historical structures, campgrounds, picnic areas, boat ramps, and visitor centers are constantly being closed due to damage and/or repair. When planning an adventure within Chesapeake and Ohio Canal National Historical Park, make sure that areas you plan to visit are open by checking the National Park Service’s official Current Park Conditions web page.


The following is a list of locks, lockhouses, aqueducts, dams, and other historical structures within Chesapeake and Ohio National Historical Park. Structures I visited have hyperlinks to web pages with detailed information and photographs.

  • Mile markers have been placed along the C&O Canal towpath. The 0 Mile point is in Georgetown in Washington, D. C., and the canal’s terminus is at Mile 184.5 in Cumberland, Maryland.
  • Structures with an * after their name cannot be reached by vehicle and require hiking or biking along the C&O Canal towpath. All others are either next to or within a quarter mile of a parking lot.
MILE STRUCTURE
0 Tide Lock
.3 Lock 1
.3 Lock 2
.4 Lock 3
.4 Lock 4
3.2 Abner Cloud House at Fletcher’s Cove
5 Lock 5 and Dam 1 Guard Lock
5.4 Lock and Lockhouse 6
5.7 Dam 1*
7 Lock and Lockhouse 7
8.4 Lock and Lockhouse 8
8.7 Lock 9
8.8 Lock and Lockhouse 10
9 Lock and Lockhouse 11
9.3 Lock 12*
9.4 Lock 13*
9.5 Lock 14*
13.6 Lock 15*
13.7 Lock and Lockhouse 16*
13.8 Great Falls Stop Gate*
14.1 Lock 17*
14.2 Lock 18
14.3 Lock 19
14.4 Lock 20 and Great Falls Tavern
16.7 Lock and Lockhouse 21
17.5 Dam 2*
19.7 Lock and Lockhouse 22
22 Lock 23
22.7 Lock and Lockhouse 24
22.7 Seneca Creek Aqueduct
22.8 Seneca Stonecutting Mill Ruins
30.9 Lock and Lockhouse 25
31.9 Broad Run Aqueduct*
39.4 Lock 26*
41.5 Lock and Lockhouse 27*
42.2 Monocacy Aqueduct
48.9 Lock and Lockhouse 28*
50.9 Lock and Lockhouse 29
51.5 Catoctin Creek Aqueduct*
55 Lock 30
58 Lock and Lockhouse 31
60.2 Lock 32*
60.7 Lock 33*
61.5 Lock 34
62.3 Dam 3 Ruins and Inlet Lock
62.3 Lock 35
62.5 Lock 36
66.9 Lock and Lockhouse 37*
69.4 Antietam Creek Aqueduct
72.7 Lock 38
74 Lock 39*
79.4 Lock 40*
84.6 Dam 4 and Stop Gate
85.8 Guard Lock 4
88.1 McMahon’s Mill
88.9 Lock 41*
89 Lock 42*
92.9 Lock and Lockhouse 43*
99.1 Lock and Lockhouse 44*
99.5 Western Maryland Railroad Lift Bridge
99.7 Conococheague Creek Aqueduct
106.6 Dam 5, Guard Gate, and Lockhouse 45
107 Lock 45
107.2 Lock and Lockhouse 46
108.2 Charles Mill Ruins*
108.8 Lock 47
108.8 Lock 48
108.9 Lock and Lockhouse 49
109 Lock 50
116 Licking Creek Aqueduct*
122.7 Lock 51
122.9 Lock 52 and the Tonoloway Creek Aqueduct
130 Lock 53*
134 Lock 54*
134.2 Lock 55*
136.2 Lock and Lockhouse 56
136.6 Sideling Hill Creek Aqueduct*
139.4 Lock 57*
140.9 Fifteenmile Creek Aqueduct
144 Lock 58*
146.5 Lock 59*
149.6 Lock 60*
153.1 Lock 61*
154.1 Lock 62*
154.5 Lock 63 1/3*
154.6 Lock 64 2/3*
154.7 Lock 66*
155.2 Paw Paw Tunnel (downstream)*
155.8 Paw Paw Tunnel (upstream)*
161.7 Lock 67*
162.4 Town Creek Aqueduct
164.8 Lock and Lockhouse 68*
166.5 Lock 69
166.7 Lock and Lockhouse 70
167 Lock and Lockhouse 71*
174.4 Lock and Lockhouse 72*
175.4 Lock 73
175.5 Lock 74
175.7 Lock and Lockhouse 75
180.7 Evitt’s Creek Aqueduct*
184.5 Canal Terminus

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Last updated on January 15, 2022
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