The Newmarket Canal

Standing in front of the middle lock

There’s an interesting piece of history hiding in the outer reaches of the GDA (Greater Dodgeville Area, loosely defined as any place I can reach by bike) just north of Newmarket: the scattered remnants of the Newmarket Canal.

This never-finished canal was to be a southerly branch of the Trent-Severn canal from Lake Simcoe to Aurora via the Holland River. This was not a trivial undertaking for many reasons, not the least of which was that there just wasn’t enough water in the river to operate a canal. The initial plan for the canal called for reservoirs to be fed by water diverted from Lake Wilcox, the source of the Humber River. That plan was later shelved as being too expensive and politically unpopular, and was replaced by a scheme to pump the necessary water uphill from Lake Simcoe to the top of the Oak Ridges Moraine at Aurora.

Work on the canal was to be done in three stages: the first required that the river be dredged from Lake Simcoe to Holland Landing. The second required three locks to be built between Holland Landing and Newmarket (the second of those locks is pictured above). The final phase, from Newmarket to Aurora, would require an additional five or six locks depending on the final route, which still hadn’t been finalized when construction began.

Even as the work on the canal began in 1906 and continued for five years, there was still no clear plan for keeping enough water in the canal to keep it navigable during any period of the year outside the spring thaw. Increasing public opposition, escalating costs, and a change in government ultimately doomed the project in 1912 after years of political shenanigans, interference, and scandals that would make most modern politicians blanche. At that point, most of the work on the canal through Holland Landing and up to Newmarket had been completed. The three lock structures and the base of one swing bridge that had been built before the project was called off still stand along the east branch of the Holland River north of Newmarket.

James T. Angus’s comprehensive book, A Respectable Ditch: A History of the Trent-Severn Waterway 1833–1920, details the tortuous political and physical paths of the entire project’s 90 years of debate, design, and construction. It devotes a chapter to the Newmarket Canal debacle and is well worth reading.

This was at least the second planned canal along this route. The other would have gone straight through the Oak Ridges Moraine and connected to Lake Ontario via the Humber River.

I first visited two of the abandoned lock structures almost 20 years ago, shortly after learning about the Newmarket Canal in Ron Brown‘s excellent guidebook, 50 Unusual Things to See in Ontario. I finally visited the third lock and the swing bridge just this past September.

Looking back now, 50 Unusual Things was probably what set me off on my habit of exploring the GDA and finding unusual sights and abandoned bits of the city. Damn you, Ron Brown!

My most recent cycling visit to the canal was on Saturday, during which I was trapped under a sheltering bridge for an hour and a half by that big storm that whipped across southern Ontario. I eventually called Risa to rescue me with the car after giving up hope that the lightning, rain, and wind would let up in time for me to get back home at a reasonable hour.

The irony here is that I was stuck within spitting distance of the East Gwillimbury GO station. I could easily have gone home by train, but the next one was 36 hours away on Monday morning and I wouldn’t have been able to take my bike on it. Hello GO? Weekend service, please.

More pictures below the fold.

Looking down the middle lock

Looking upriver through the middle of the three locks on the east branch of the Holland River. A barrier under the bridge prevents the river from running through the lock, forcing it to run to the left of this picture. On the other side of the barrier is the Rogers Reservoir.

The Rogers Reservoir behind the middle lock is more marsh than reservoir

The Rogers Reservoir, looking upstream from the middle lock. I’ve never seen it look like much more than a big marsh. The river channel runs through the upper left of the picture.

The dredged and straightened canal between the high and middle locks

Just upstream from the reservoir, the river runs through a dredged and straightened channel. I don’t think the river is usually this muddy, but it was flowing fast and dirty after the storm.

The swing bridge structure. The pedestrian bridge is not connected to the historic bridge base.

The river passes between the structures for the swing bridge. The bridge piers and swing table are still in place, but the bridge itself is gone. The pedestrian bridge that crosses the river here passes over the original structures. Although it was never used as a swing bridge, it used to carry Green Lane across the river until seven (or so) years ago. The current Google Maps image of the area shows the old bridge supports, but the pedestrian bridge had not yet been built.

The highest lock on the canal has been filled in. A recreational trail crosses the top of the lock structure and continues at the left of the picture where the guardrail is.

The third lock going upstream has been almost completely filled in. A recreational trail crosses the top of the lock structure and continues past the guardrail at the left of this picture.

The upper lock has been filled in

The third lock again, this time looking downstream from the recreational trail.

A bollard for tying up boats still sits atop the upper lock

A landlocked and broken bollard for tying up boats is still affixed to the top of the structure.

The river still flows through the control structure beside the upper lock. A recreational path crosses along the top

The river still flows through the control structure beside the third lock.

The other remaining lock structure on the river is at Yonge Street just south of Mount Albert Road. I didn’t get to it on this trip.

20 Replies to “The Newmarket Canal”

  1. Thanks Val for this superb blog. The adjoining Tom Taylor Trail is part of the Nokiidaa Trail System. Whilst it’s not on the moraine the Oak Ridges Trail Association often has group hikes through this system. There’s so much history right there.

    Thanks again, Stan.

  2. Hello,

    Great little write up. Should help to bring awareness to these locks. This a a fourth one that I should point out. Although not a full lock, from what I can tell, there is a structure of the same architecture located at The Tannery on Davis Drive in Newmarket.

    It also has the steps and bollards. Perhaps this was to be a planned landing for passengers back in the day.



    1. the fourth lock you are referring to is actually where the turning basin was before they filled it in to the build the tannery parking lot. its a really interesting part of newmarkets history and needs to be recognized

  3. Thanks for the write-up – have been looking for a couple of hours for information. Just saw the middle locks today – fascinating story about their construction. Boondoggle on an absolutely massive scale. The engineers said there wouldn’t be enough water – but they went ahead with construction anyway. Must have cost a pretty penny.
    Great photos. Absolutely nothing about this fiasco in write-ups bout William Mulock – nothing until you check the canal. Construction began in 1906 and he had resigned from politics in 1905 – hard to see how much clout he had in this construction – looking for the books by Williams and Angus now.
    Many thanks.


  4. Where is this located? I would love to drive and have a look and take some pics. My daughter and I love this heritage đŸ™‚

    1. Hi Leslie,

      There are links to Google maps of the two sites under some of the pictures in this post. The third site, which I didn’t visit for this article, is on the Holland River where it crosses Yonge Street. You can’t miss it if you take Yonge through Holland Landing.

  5. I live in Newmarket. I ride my bike through this area all summer long and never get bored of it! I find this stuff incredibly interesting but never knew the reasons behind the historic sites. Just wanted to say I admire this kind of stuff and thanks for the history lesson. Too bad the young aren’t smart enough to leave said historical sites clear of their untalented graffiti, but I love that I live so close to such an interesting piece of history.

  6. My cousin lives in New market and every time my family goes to visit him and I always take a ride to the trails that surround the locks. I love the mysterious kind of feeling the abandoned concrete structures give off, it never gets old. The trail biking that follows most of the locks is really good stuff!

  7. Hey, this is a great post, thanks. I knew of the south canal, as one of my ancestors worked on the project, but i had no idea that portions still existed. Unfortunately, i now live 3000 kms away, but the next time i’m home i’ll be looking for these remnants. thanks again.

  8. Dont forget the old “Arch” bridge that crosses the holland river just north of queen street in downtown nemmarket. I always found it interesting that a train ran over that bridge. It you look around in the bushes there is lots of old structure still around that has been covered by trees & such. Its always amazed me what newmarket could have been if the whole canal system had been completed………and worked!

  9. I used to bike there in the 80’s with my buddies when i was a young kid. Rogers Reservoir used to be dammed higher back then and the whole marsh area was covered in water and formed a fair size lake much bigger than ferry lake in downtown newmarket which is still home to a dam ay Water St. that I believe pre-dates the building of the locks that the old mills used for power generation I believe. I have a great picture of the Davis Tannery from that era showing the old turning basin for the canal at Davis Dr.
    You can also see a railway siding running along side of it if you look closely.

  10. On the banks of Bogart Creek, which runs through College Manor park in Newmarket, there are some very old cement structures that look unfinished. Does anyone know if these are part of that lock system? I can’t seem to find any mention of this location in the information published. Thanks

    1. I am also looking into this but I don’t think so, as the turn around was at Davis (Tannery Mall). It might be part of an old mill.

  11. Good view of old locks through your pictures. I moved to the river in 72 at Queen and Main st s. See Rainbow bridge a structure that supported an elevated train system. 500 meters south is the damn at Fairy Lake. At Davis dr. are old tie ups with the lock structure as part of base for modern bridge. Lock 2 is bay view park buried now as was not the case in my youth when we fished carp there. Rodgers reservoir was then a bay reaching to the base of the far hills featuring a lookout tower of wooden construction . Locks at Holland landing are the least impressive of the 3 locks but do show the old mount for a swing bridge that was never built. The old Davis tannery building was used for Peel fencing co. On the south end and a burned out shell on the north. That it was turned into a marbled mall is beyond my youthful imaginings. Thx for your work on this, all the best in your travels.

  12. Desperately trying to find a video I found years ago about the history of the canal.
    The link no longer works. Wondering if anyone has a proper link to it. The video is at least 10 years old.
    It showed old Newmarket, talked about the government at the time and referenced an Italian team of workers building the canal. I’m very interested in information regarding the Italian crew (if I’m correct in my memory of the video).
    This is the non-working link:

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