Thomson Dam De Formation Rock

Thomson Dam, also known as the Thomson Hydro Station or Thomson Water Project, is an embankment and concrete gravity dam on the Saint Louis River near the town of Thomson in northeastern Minnesota, United States. It consists of a 1600-foot long primary structure and multiple supplementary dams which, together with precambrian rock outcrop…
Thomson Dam, also known as the Thomson Hydro Station or Thomson Water Project, is an embankment and concrete gravity dam on the Saint Louis River near the town of Thomson in northeastern Minnesota, United States. It consists of a 1600-foot long primary structure and multiple supplementary dams which, together with precambrian rock outcrops known as the Thomson formation, impound the river to create Thomson Reservoir.
  • Location: Carlton County, Minnesota, U.S.
  • Purpose: Power
  • Status: Operational
  • Construction began: 1905
  • Opening date: 1907 · 1914-48 expanded · 2012 damaged · 2014 reconstructed
  • Built by: Great Northern Railway
  • Owner(s): Minnesota Power

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Data from: en.wikipedia.org