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Lockport Powerhouse

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Title: Lockport Powerhouse  
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Subject: Dams in Illinois
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Lockport Powerhouse

Lockport Lock, Dam and Power House Historic District
Lockport Dam, Lock and Powerhouse
Nearest city Lockport Township, near Lockport, Illinois
Area 44.2 acres (17.9 ha)
Built 1910
Architectural style Renaissance
Governing body Federal
MPS Illinois Waterway Navigation System Facilities MPS
NRHP Reference # 04000167[1]
Added to NRHP March 10, 2004

The Lockport Powerhouse is a dam used by the Metropolitan Water Reclamation District of Greater Chicago to control the outflow of the Sanitary and Ship Canal and limit the diversion of water from Lake Michigan into the Des Plaines River.


The Chicago Sanitary and Ship Canal reached Lockport, Illinois in the 1890s. As part of this construction, a lock and dam was built in Lockport. Seven waste gates, used to control the level of water in the canal and Des Plaines River, were part of this project.[2] From 1903 to 1907, the canal was extended from Lockport to Joliet. Construction on the Lockport Powerhouse began as part of this extension in 1905. Designed by Frederick L. Barrett, the red-roofed Beaux Arts powerhouse was constructed with concrete blocks coursed to resemble stone. The powerhouse featured four Francis-style turbines to generate electrical power, capable of generating 40,000 horsepower (30,000 kW). These turbines have since been replaced with two vertical Kaplan-style turbines. The powerhouse was also the home of the waste gate controls. The lock and gates were designed to manage a 40-foot (12 m) drop in canal elevation between the two municipalities.[3]

A second phase of construction occurred from 1922 to 1933 to handle differing water loads following the opening of the Ohio River Standard Navigation Lock. First operational in 1907, the powerhouse is now recognized as the oldest hydroelectric plant in Illinois.[4] The Lockport Lock, Dam and Power House Historic District was recognized by the National Park Service with a listing on the National Register of Historic Places on March 10, 2004.[1]


  1. ^ a b "National Register Information System". National Register of Historic Places.  
  2. ^ Belden 2012, p. 92.
  3. ^ Belden 2012, p. 99.
  4. ^ Belden 2012, p. 109–110.
  • Belden, David A. (2012). Illinois and Michigan Canal. Images of America. Charleston, SC: Arcadia Publishing.  

External links

  • Lockport Powerhouse
  • Lockport Powerhouse
  • I&M Canal Photo History
  • Inventory of Nonutility Electric Power Plants in the United States 2000 (PDF)
  • National Register of Historic Places (Will County, Illinois)

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