File:DETAILED INTERIOR VIEW OF MIDDLE INTERMEDIATE WALL CONTROL STATION, LOOKING WEST - Upper Mississippi River 9-Foot Channel Project, Lock and Dam 27, Granite City, Madison County, HAER ILL,60-GRACI,2-37.tif

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DETAILED INTERIOR VIEW OF MIDDLE INTERMEDIATE WALL CONTROL STATION, LOOKING WEST - Upper Mississippi River 9-Foot Channel Project, Lock and Dam 27, Granite City, Madison County, IL
Title
DETAILED INTERIOR VIEW OF MIDDLE INTERMEDIATE WALL CONTROL STATION, LOOKING WEST - Upper Mississippi River 9-Foot Channel Project, Lock and Dam 27, Granite City, Madison County, IL
Description
U.S. Army Corps of Engineers
Depicted place Illinois; Madison County; Granite City
Date Documentation compiled after 1968
Dimensions 4 x 5 in.
Current location
Library of Congress Prints and Photographs Division Washington, D.C. 20540 USA http://hdl.loc.gov/loc.pnp/pp.print
Accession number
HAER ILL,60-GRACI,2-37
Credit line
This file comes from the Historic American Buildings Survey (HABS), Historic American Engineering Record (HAER) or Historic American Landscapes Survey (HALS). These are programs of the National Park Service established for the purpose of documenting historic places. Records consist of measured drawings, archival photographs, and written reports.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

Notes
  • Significance: ...Lock and Dam No. 27 constitute additions to the original Upper Mississippi Nine-Foot Channel Project, constructed after World War II. Lock No. 27, located on the Chain of Rocks Canal, provided the last link in the nine-foot channel, facilitating safe passage around the dangerous Chain of Rocks Reach. The design and construction of the locks incorporated various engineering and technological lessons and advances learned during the completion of the earlier elements of the project during the 1930s. Dam No. 27, constructed in the early 1960s, provides additional depth of water in the pool, extending upstream to Lock and Dam No. 26, facilitating more efficient operation of that installation. Dam No. 27 is the first dam ever constructed completed across the Mississippi River. It is emblematic of the continued efforts to refine and improve the nine-foot channel.
  • Survey number: HAER IL-33
  • Building/structure dates: 1947 Initial Construction
  • Building/structure dates: 1964 Subsequent Work
Source https://www.loc.gov/pictures/item/il0557.photos.063150p
Permission
(Reusing this file)
Public domain This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.
Object location38° 42′ 05″ N, 90° 08′ 55″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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current03:09, 17 July 2014Thumbnail for version as of 03:09, 17 July 20145,041 × 3,988 (19.17 MB)Fæ (talk | contribs)GWToolset: Creating mediafile for Fæ. HABS 16 July 2014 (1201:1400)

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