Port Severn in Simcoe County, Ontario — Central Canada
Water Control Dams/Port Severn – The Secondary Lock
Barrages de régularisation des eaux/Port Severn – L’écluse secondaire

cmh2315fl via Flickr (CC BY-NC 2.0), August 3, 2017
1. Water Control Dams/Port Severn – The Secondary Lock Marker
Water Control Dams
A complex system of dams was needed to manage water levels for navigation on the lower Severn River. In many cases older timber structures built by loggers were replaced with concrete.
Port Severn – The Secondary Lock
Contracts for a dam and lock were let in 1913. Since it was only to carry local traffic between Matchedash Bay and Gloucester Pool it was only 7 m. wide and 30 m. long, smaller than other locks on the system. It was opened in 1915.
The main route of the canal was to follow Little Go Home Bay to a lock giving access to Georgian Bay via the South Bay of Honey Harbour. Work on the section began in 1919 but was never completed.
The lock at Port Severn was declared the official northern terminus and has been serving boaters ever since.
[Francais]
Barrages de régularisation des eaux
Il fallait recourir a un systeme complexe de barrages pour controler le niveau des eaux en vue de la navigation sur le cours inferieur de la Severn. Dans bien des cas, on a remplacé par dos ouvrages de béton les vielles constructions

cmh2315fl via Flickr (CC BY-NC 2.0), August 3, 2017
2. Water Control Dams/Port Severn – The Secondary Lock Marker
Port Severn – L’écluse secondaire
C’est en 1913 que furent signés contrats pour la construction d’un barrage et d’une ecluse à Port Severn. Puisque l’écluse ne devait servir qu’à la circulation locale entre la baie Matchedash et l’étang Gloucester, elle ne mesurait que 7 mètres de large sur 30 de long, moins donc que les autres écluses de la voie navigable. Elle fut ouverte en 1915.
La voie principale du canal devait suivre la baie Little Go Home jusqu’à une écluse donnant accès a la baie Georgienne en passant par la baie South à Honey Harbour. Les trevaux de cette section commencèrent en 1919, mais furent interrompus en 1921.
L’écluse de Port Severn devint le terminus officiel du nord et accueille les plaisanciers depuis.
Topics. This historical marker is listed in these topic lists: Man-Made Features • Waterways & Vessels. A significant historical year for this entry is 1913.
Location. 44° 48.217′ N, 79° 43.247′ W. Marker is in Port Severn, Ontario, in Simcoe County. Marker can be reached from Port Severn Road North, 1.2 kilometers east of Lone Pine Road, on the right when traveling east. Marker is along a brick walkway that goes underneath the west end of the bridge. Touch for map. Marker is at or near this postal address: 181 Port Severn Rd N, Port Severn ON L0K 1S0, Canada. Touch for directions.
Other nearby markers. At least 2 other markers are within
Credits. This page was last revised on April 21, 2022. It was originally submitted on April 21, 2022, by Duane and Tracy Marsteller of Murfreesboro, Tennessee. This page has been viewed 34 times since then and 3 times this year. Photos: 1, 2, 3. submitted on April 21, 2022, by Duane and Tracy Marsteller of Murfreesboro, Tennessee.