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Locks on the Chesapeake and Ohio Canal

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Lock Miles Name Nearby landmarks Coordinates
0 0.0 Tidewater Lock
1 0.38 Georgetown 38°54′14″N 77°03′29″W / 38.904°N 77.058°W / 38.904; -77.058
2 0.42 Georgetown 38°54′14″N 77°03′32″W / 38.904°N 77.059°W / 38.904; -77.059
3 0.49 Georgetown 38°54′14″N 77°03′32″W / 38.904°N 77.059°W / 38.904; -77.059
4 0.54 Georgetown 38°54′14″N 77°03′40″W / 38.904°N 77.061°W / 38.904; -77.061
5 5.0 Brookmont Lock 38°56′24″N 77°07′19″W / 38.940°N 77.122°W / 38.940; -77.122
6 5.4 Magazine Lock Little Falls 38°56′42″N 77°07′26″W / 38.945°N 77.124°W / 38.945; -77.124
7 7.0 Chataqua Lock Glen Echo 38°57′54″N 77°08′20″W / 38.965°N 77.139°W / 38.965; -77.139
8 8.33 Seven Locks 1 38°58′16″N 77°09′40″W / 38.971°N 77.161°W / 38.971; -77.161
9 8.7 Seven Locks 2 38°58′19″N 77°10′01″W / 38.972°N 77.167°W / 38.972; -77.167
10 8.79 Seven Locks 3 38°58′19″N 77°10′08″W / 38.972°N 77.169°W / 38.972; -77.169
11 8.97 Seven Locks 4 38°58′19″N 77°10′19″W / 38.972°N 77.172°W / 38.972; -77.172
12 9.29 Seven Locks 5 38°58′19″N 77°10′41″W / 38.972°N 77.178°W / 38.972; -77.178
13 9.37 Seven Locks 6 American Legion (Cabin John) Bridge 38°58′19″N 77°10′44″W / 38.972°N 77.179°W / 38.972; -77.179
14 9.47 Seven Locks 7 38°58′19″N 77°10′52″W / 38.972°N 77.181°W / 38.972; -77.181
15 13.45 Six Locks 1 Great Falls 38°59′20″N 77°14′38″W / 38.989°N 77.244°W / 38.989; -77.244
16 13.60 Six Locks 2 Great Falls 38°59′31″N 77°14′42″W / 38.992°N 77.245°W / 38.992; -77.245
17 13.99 Six Locks 3 Great Falls 38°59′46″N 77°14′53″W / 38.996°N 77.248°W / 38.996; -77.248
18 13.99 Six Locks 4 Great Falls 38°59′53″N 77°14′56″W / 38.998°N 77.249°W / 38.998; -77.249
19 14.17 Six Locks 5 Great Falls 38°59′56″N 77°14′53″W / 38.999°N 77.248°W / 38.999; -77.248
20 14.30 Six Locks 6 - aka Tavern Lock Great Falls Tavern 39°00′00″N 77°14′53″W / 39.000°N 77.248°W / 39.000; -77.248
21 16.64 Swain's Lock 39°01′55″N 77°14′38″W / 39.032°N 77.244°W / 39.032; -77.244
22 19.63 Pennyfield Lock 39°03′14″N 77°17′20″W / 39.054°N 77.289°W / 39.054; -77.289
23 22.12 Violette's Lock and Inlet Lock 2
24 23.00 Riley's Lock Seneca Creek Aqueduct
25 30.8 Edward's Ferry Poolesville
26 39.4 Wood's Lock 39°12′58″N 77°27′29″W / 39.216°N 77.458°W / 39.216; -77.458
27 41.5 Spinks Ferry Monocacy Aqueduct 39°11′28″N 77°28′16″W / 39.191°N 77.471°W / 39.191; -77.471
28 48.9 Fulton's Lock Point of Rocks 39°16′55″N 77°32′53″W / 39.282°N 77.548°W / 39.282; -77.548
29 50.89 Lander Lock or Catoctin Lock 39°18′25″N 77°33′32″W / 39.307°N 77.559°W / 39.307; -77.559
30 55.0 Brunswick, Maryland 39°18′40″N 77°37′48″W / 39.311°N 77.630°W / 39.311; -77.630
31 58.0 Weverton Lock 39°19′44″N 77°40′52″W / 39.329°N 77.681°W / 39.329; -77.681
32 60.23 Sandy Hook, Maryland 39°19′26″N 77°43′08″W / 39.324°N 77.719°W / 39.324; -77.719
33 60.7 Harper's Ferry 39°19′30″N 77°43′37″W / 39.325°N 77.727°W / 39.325; -77.727
34 61.57 Goodheart's Lock Harper's Ferry 39°19′59″N 77°44′20″W / 39.333°N 77.739°W / 39.333; -77.739
35 62.33 Harper's Ferry 39°20′13″N 77°45′04″W / 39.337°N 77.751°W / 39.337; -77.751
36 62.44 Harper's Ferry 39°20′13″N 77°45′11″W / 39.337°N 77.753°W / 39.337; -77.753
37 66.96 Mountain Lock 39°23′06″N 77°44′06″W / 39.385°N 77.735°W / 39.385; -77.735
38 72.65 Shepherdstown, West Virginia
39 74.0 One Mile Lock James Rumsey Bridge, Snyder's Landing 39°26′46″N 77°46′59″W / 39.446°N 77.783°W / 39.446; -77.783
40 79.41 Horseshoe Bend 39°29′10″N 77°46′44″W / 39.486°N 77.779°W / 39.486; -77.779
41 88.9 39°31′59″N 77°50′17″W / 39.533°N 77.838°W / 39.533; -77.838
42 89.04 39°31′55″N 77°50′24″W / 39.532°N 77.840°W / 39.532; -77.840
43 92.96 39°32′31″N 77°51′58″W / 39.542°N 77.866°W / 39.542; -77.866
44 99.3 Williamsport Williamsport, Maryland 39°35′38″N 77°49′30″W / 39.594°N 77.825°W / 39.594; -77.825
45 107.27 Two Locks 1 39°36′50″N 77°55′34″W / 39.614°N 77.926°W / 39.614; -77.926
46 107.42 Two Locks 2 39°36′58″N 77°55′37″W / 39.616°N 77.927°W / 39.616; -77.927
47 108.8 Four Locks 1 39°37′01″N 77°56′49″W / 39.617°N 77.947°W / 39.617; -77.947
48 108.8 Four Locks 2 39°36′58″N 77°56′53″W / 39.616°N 77.948°W / 39.616; -77.948
49 108.8 Four Locks 3 39°36′54″N 77°56′56″W / 39.615°N 77.949°W / 39.615; -77.949
50 108.8 Four Locks 4 39°36′50″N 77°56′56″W / 39.614°N 77.949°W / 39.614; -77.949
51 122.59 Hancock 1 Hancock, Maryland
52 122.85 Hancock 2 Hancock, Maryland
53 130.0 Irishman's Lock Leopard's Mill
54 134.0 39°37′26″N 78°17′20″W / 39.624°N 78.289°W / 39.624; -78.289
55 134.0 Near Dam 6 39°37′30″N 78°17′31″W / 39.625°N 78.292°W / 39.625; -78.292
56 136.2 Sideling Lock Sideling Hill 39°38′13″N 78°19′44″W / 39.637°N 78.329°W / 39.637; -78.329
57 139.2 39°37′37″N 78°21′40″W / 39.627°N 78.361°W / 39.627; -78.361
58 143.9 39°37′16″N 78°24′22″W / 39.621°N 78.406°W / 39.621; -78.406
59 146.6 39°36′40″N 78°25′59″W / 39.611°N 78.433°W / 39.611; -78.433
60 149.7 Stickpile Hill 39°34′55″N 78°24′14″W / 39.582°N 78.404°W / 39.582; -78.404
61 153.1 39°35′02″N 78°27′36″W / 39.584°N 78.460°W / 39.584; -78.460
62 154.2 39°34′16″N 78°27′11″W / 39.571°N 78.453°W / 39.571; -78.453
63⅓ 154.5 Paw Paw Tunnel 39°34′01″N 78°27′14″W / 39.567°N 78.454°W / 39.567; -78.454
64⅔ 154.6 (Lock 65 was never built) 39°33′58″N 78°27′18″W / 39.566°N 78.455°W / 39.566; -78.455
66 154.7 39°33′54″N 78°27′25″W / 39.565°N 78.457°W / 39.565; -78.457
67 161.8 Darkey's Lock 39°31′30″N 78°31′59″W / 39.525°N 78.533°W / 39.525; -78.533
68 164.8 Crabtree's Lock 39°31′48″N 78°35′20″W / 39.530°N 78.589°W / 39.530; -78.589
69 166.4 Twigg's Lock
70 166.7 Oldtown
71 167.0
72 174.4 The Narrows or Ten Mile Lock
73 175.4 North Branch 1
74 175.5 North Branch 2
75 175.6 North Branch 3
184.5 Cumberland, Maryland

References

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