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Hidden Towns Beneath The St. Lawrence Seaway

Published:

Modified: 5 October 2026

by Randie Hermosillo

Hidden Towns Beneath The St. Lawrence Seaway

In 1958, the St. Lawrence Seaway project flooded several communities, creating hidden towns beneath the water. The most well-known are the Lost Villages of Ontario, which now lie submerged and accessible to divers.

The Lost Villages of Ontario

The St. Lawrence Seaway project, with flooding in 1958, transformed the landscape of Ontario. To make way for this massive engineering feat, several towns were flooded and now lie beneath the waters. These submerged towns, known as the Lost Villages, hold a unique place in Canadian history.

  1. Aultsville

    • Once a bustling community, Aultsville had schools, churches, and a vibrant social life. Today, divers can explore remnants of its streets and buildings.

  2. Farran’s Point

    • Known for its shipbuilding industry, Farran’s Point was a key player in the local economy. The town's remains now serve as a haunting underwater museum.

  3. Mille Roches

    • Mille Roches was famous for its beautiful stone houses. These structures, now submerged, attract divers and history enthusiasts alike.

  4. Wales

    • This small village had a rich agricultural heritage. The underwater ruins of Wales offer a glimpse into the farming life of the past.

The Sunken Towns of Quebec

Quebec also saw several towns submerged due to the St. Lawrence Seaway project. These towns, once full of life, now rest quietly beneath the water's surface.

  1. Iroquois

    • Iroquois was relocated before the flooding.

  2. St. Joseph d'Orléans

    • A small but vibrant community, St. Joseph d'Orléans was known for its church and local festivals. The church's underwater remains are a poignant reminder of the town's past.

The Underwater Ghost Towns of New York

The St. Lawrence Seaway also affected towns in New York. These ghost towns, now submerged, offer a unique underwater adventure for those interested in history and diving.

  1. Barnhart Island

    • Once a thriving community, Barnhart Island now lies beneath the waters. Its submerged buildings and streets are a fascinating dive site.

  2. Croil Island

    • Known for its beautiful landscapes, Croil Island was a popular spot for locals. The underwater ruins of its homes and gardens are a testament to its former beauty.

  3. Waddington

    • Waddington was partially flooded, with some areas still above water. The submerged parts of the town offer a unique glimpse into its past.

  4. Louisville Landing

    • This small town was known for its fishing industry. The underwater remains of Louisville Landing provide a fascinating look at its maritime heritage.

Discovering the Sunken Towns

The hidden towns beneath the St. Lawrence Seaway offer a glimpse into the past. These submerged communities now lie silent under the water. Exploring them, whether by diving or visiting museums that showcase artifacts and stories from the era, reveals the sacrifices made for progress and the resilience of the people who once lived there. These sunken towns provide a rare opportunity to connect with a piece of history that is often overlooked.

Related travel guides: Hidden Canal Towns Along The Rideau, Hidden Tobacco Barns Of Ontario, and Hidden Logging Camps Of Northern Ontario.