Oswego Canal Locks

Oswego Canal Locks

There are a total of 7 locks over the length of the Oswego Canal, (Lock O1 thru Lock O8); there is no lock O4. All are single chamber locks with all chambers having the same dimensions: 328 feet long and 45 feet wide with 14 feet of water over the lock sills. All of the locks provide lines, cables, pipes, or some combination of these for your use.

The highest single lift on the canal is found at Lock O3 in Fulton, NY with a lift of 27 feet. The smallest lift is found at lock O1 in Phoenix, NY with a lift of only 10.2 feet.

When northbound from the Oswego/Erie Canal Junction (Three Rivers Junction), all locks will lower you to the level of Lake Ontario. When Southbound, the opposite is true and you will be raised to the level of the Erie Canal. Regardless of direction of travel, the total lift will be 118.6 feet over the length of the canal.


Communications with the locks is done on VHF Channel 13 (156.650 MHz). While we have listed the phone numbers for each lock, the cell phone should not be considered a primary means of communications with the lockmasters and only used when all other methods have failed to get a response.

Oswego Locks Table

The table below lists the locks on the Oswego Canal from Lock O1, about 2 miles north of Three Rivers Junction, to Lock O8 at Oswego, NY. It provides the lifts for each lock, the distance to the next lock, and the estimated time enroute between locks. It does not include lockage time for each lock.

Oswego Canal Locks
Lock # Mile Marker (SM) Location Lift Lower Upper Next Lock Distance (SM) Transit Time @ 10 MPH Lockmaster Phone
Erie Canal 0.00 Three Rivers Jct. --- 363.3' O1 2.3 00:13  
O1 2.15 Phoenix, NY 10.2’(NBDown Arrow SBUp Arrow ) 353.1' 363.3' O2 9.3 00:56 315-695-2281
O2 11.48 Fulton, NY 17.8’(NBDown Arrow SBUp Arrow ) 335.3' 353.1' O3 0.6 00:03 315-592-4155
O3 12.06 Fulton, NY 27.0’(NBDown Arrow SBUp Arrow ) 308.3' 335.3' O5 6.4 00:39 315-592-5349
O5 18.49 Minetto, NY 18.0’(NBDown Arrow SBUp Arrow ) 290.3' 308.3' O6 3.3 00:20 315-343-5232
O6 21.78 High Dam, NY 20.0’(NBDown Arrow SBUp Arrow ) 270.3' 290.3' O7 0.7 00:04 315-343-9001
O7 22.45 Oswego, NY 14.5’(NBDown Arrow SBUp Arrow ) 255.8' 270.3' O8 0.4 00:03 315-343-6304
O8 22.89 Oswego, NY 11.1’(NBDown Arrow SBUp Arrow ) 244.7' 255.8' Lake Ontario 0.7 00:04 315-343-0280
No Lock "O4" on the Oswego Canal.

The Oswego Canal Locks Table above can be downloaded for your personal and private use. The file contains the table in SM’s, NM’s and KM’s/meters. The file is in Zipped Adobe (.pdf) format.

Oswego Canal Locks - Download

Lock Chamber Waypoint's

The table below lists the latitude and longitude for the approximate center of each lock chamber for those who wish to use them as waypoints.

Oswego Canal Lock Chamber Waypoints
Lock # Location Latitude Longitude
Three Rivers Jct. Phoenix, NY 43° 12’ 04.3" N 76° 16’ 48.7" W
Oswego Canal - O1 Phoenix, NY 43° 13’ 45.8" N 76° 18’ 05.1" W
Oswego Canal - O2 Fulton, NY 43° 18’ 59.9" N 76° 24’ 52.9" W
Oswego Canal - O3 Fulton, NY 43° 19’ 27.2" N 76° 25’ 07.1" W
Oswego Canal - O5 Minetto, NY 43° 24’ 01.9" N 76° 28’ 23.8" W
Oswego Canal - O6 High Dam, NY 43° 26’ 40.9" N 76° 29’ 41.8" W
Oswego Canal - O7 Oswego, NY 43° 27’ 03.6" N 76° 30’ 17.0" W
Oswego Canal - O8 Oswego, NY 43° 27’ 23.7" N 76° 30’ 31.6" W
No Lock "O4" on the Oswego Canal.

The Oswego Canal Lock Chamber Waypoints can be downloaded for your personal and private use. The file is in Zipped Adobe (.pdf) format.

This table can be downloaded for your personal and private use. The file is Zipped Adobe (.pdf) format. The Champlain Canal Locks file contains the tables in SM’s, NM’s and KM’s.

Oswego Canal Waypoints - Download

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