Upper Thames River Conservation Authority

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Upper Thames River Conservation Authority
Upper Thames River Conservation Authority.svg
Upper Thames River Conservation Authority
Abbreviation UTRCA
Formation 1947
Type conservation organization based in London, Ontario, Canada
Legal status active
Purpose advocate and public voice, educator and network
Headquarters London, Ontario, Canada
Region served
London, Ontario, Canada
Official language
English, French

The Upper Thames River Conservation Authority is a body based in London, Ontario, Canada. It was created in 1947. It was responsible for the construction of the Fanshawe Dam, completed in the 1950s, to control flooding from the Thames River, which runs through London. During the last ice age, the site of London was the terminus of a large glacier. When the region warmed at the end of the ice age, the glacier melted and receded North, leaving behind a drainage ditch and features such as Sifton Bog. As such, the Thames is a watershed for most of Western Ontario, and is therefore highly susceptible to seasonal flooding. In 1937, such flooding had devastating consequences, destroying over 1,000 homes, and causing millions of dollars in damage.

Today, the Upper Thames River Conservation Authority is mainly a not-for-profit agency which monitors flora and fauna welfare in the area and gives tours to local kids on school field trips.


  • Ellice Swamp is a Class 2 Provincially Significant wetland and largest wetland in the watershed.
  • Dorchester Swamp, is a Class 1 wetland east of London. It is a designated as an Area of Natural and Scientific Interest (ANSI)and a Carolinian Canada site. This swamp is 548 hectares is size.
  • Sifton Bog, which is a Class 2 wetland within the City of London, is considered the most southerly intact bog in Canada.
  • Golspie Swamp, northwest of Woodstock, is one of the largest remaining wooded areas in Oxford County.

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