How Many Locks

[Boatkitten]

Thanks for all the info. guys. I've been enjoying checking these locks out. I have even stumbled onto pictures of old locks that aren't in use anymore. Some don't even have water in them anymore. I guess they were replaced and bypassed. It has been very interesting. Brings back memories form school.

[charlie - soo]

To the best of my knowledge, the Cheboygan lock and the lock at Alanson are still in operation.34T8K6

[guest]

Are the recreational locks on the Cheboygan River at the city of Cheboygan, Michigan? And if so are they still operational?

[HFReign_2]

Certainly this is a complete list of 'seaway' locks. However, there are many more, now recreational, locks on the Trent and Rideau Systems.

[Boatkitten]

Thank you very much. I will study all this info & take some notes. Great info.

[MilwBob]

Chicago also has a lock, but the lake freighters do not go thru it anymore.

[yak242]

That last post is a pretty complete answer; I'd just add that what it boils down to is that a ship traveling from Montreal to Lake Superior will go through a total of 16 locks - however, some of which she may sail right through without being raised (Iroquois and lock 8 in the canal).

[Barry]

http://www.greatlakes-seaway.com/en/sea ... index.html

Locks, Canals & Channels

Lock Systems

* Montreal to Lake Ontario - 2 U.S., 5 Canadian
* Welland Canal - 8 Canadian
* St. Mary's River - 4 U.S. parallel locks ­­ one transit (Army Corps of Engineers)

The Seaway Canals

The Seaway system is connected by 6 short canals with a total length of less than 60 nautical miles. There are 19 locks, filled and emptied by gravity.

* South Shore Canal: (two locks - St. Lambert and Ste. Catherine) 14 nautical miles from the Port of Montreal to Lake St. Louis

* Beauharnois Canal: (two locks) 11.3 nautical miles; links Lake St. Louis to Lake St. Francis

* Wiley-Dondero Canal: (two U.S. locks - Snell and Eisenhower) 8 nautical miles; provides access to Lake St. Lawrence

* Iroquois Canal: (one lock and a water level control facility) 0.3 nautical miles

* Welland Canal: (eight locks) Of the seven located at north end, three are twinned and contiguous; the eighth, at the south end, is a control lock 23.5 nautical miles; links Lake Ontario to Lake Erie

* St. Mary's Falls Canal: (four parallel locks of various dimensions at Sault Ste. Marie) links Lake Huron to Lake Superior

The Seaway Locks

Together, the locks make up the world's most spectacular lift system. Ships measuring up to 225.5 metres in length (or 740 feet) and 23.8 metres (or 78 feet), in the beam are routinely raised to more than 180 metres above sea level, as high as a 60-story building. The ships are twice as long and half as wide as a football field and carry cargoes the equivalent of 25,000 metric tonnes.

Lock lore:

Each lock is 233.5 metres long (766 feet), 24.4 metres wide (80 feet) and 9.1 metres deep (30 feet) over the sill. A lock fills with approximately 91 million litres of water (24 million gallons) in just 7 to 10 minutes. Getting through a lock takes about 45 minutes.

[Boatkitten]

How many places have locks on the Great Lakes?