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Thames River conservation group marks 80th anniversary of the ‘Flood of 1937’

The flood resulted in the deaths of five people and destroyed more than 1,000 homes in the city. This photo shows homes along Front Street submerged by water. Ivey Family London Room, London Public Library

Five people were killed and more than 1,000 homes were destroyed when the Thames River rose a record 23 feet in the city, 80 years ago Wednesday.

According to the Upper Thames River Conservation Authority (UTRCA), April 26 marks the 80th anniversary of the Flood of 1937, the largest flood recorded on the Thames River.

“A lot of people don’t think much about flooding until they’re faced with it,” said Chris Tasker, manager of water and information management for the UTRCA. “That’s one of the reasons why we wanted to put it out there and [remind] people that nature does cause the rivers to overflow their banks and there are hazards associated with living near water.”

The event caused approximately $3 million worth of damage, or about $51 million when adjusted for inflation.

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“The 1937 flood is actually the standard that we use to define flood hazards and the area in which development is regulated,” Tasker said.

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A decade after the flood, the UTRCA was formed in 1947. According to the organization, their three guiding principles are:

  • Cost sharing between the province and local municipalities
  • Conservation authority boundaries based upon geographical watersheds, not political boundaries
  • Decisions made locally by a board of directors appointed by watershed municipalities

According to Tasker, the organization started on infrastructure in the Ingersoll channel to protect the area and industrial areas.

In 1952, the Fanshawe Dam, the first flood control dam to be built on the Thames watershed, was constructed to help reduce flood damages to the city.

The organization currently has a network of more than 30 stream gauges for flood forecasting and warning, three major dams – Wildwood, Pittock and Fanshawe – as well as a series of dykes, flood walls, and channels throughout the watershed for flood management.

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