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File:Chicago City Datum.jpg

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Original file ‎(2,304 × 1,414 pixels, file size: 751 KB, MIME type: image/jpeg)

Summary[edit]

Description
English: Chicago City Datum Plaque.

This bench mark designates the primary datum for the city of Chicago. It is from this point that all heights in the city are measured.

 
"The City Datum is hereby established as a plane 17.640 feet below the bench mark cut on top of the bottom stone of the granite base at the southeast corner of the Northern Trust Company bank building at the northwest corner of South Lasalle Street and West Monroe Street"

September 12, 1928
Municipal Code of Chicago
Date
Source Own work
Author Cosmo1976
Camera location 41° 52′ 50.6″ N, 87° 37′ 56.99″ W Kartographer map based on OpenStreetMap. View this and other nearby images on: OpenStreetMap - Google Earth info

Licensing[edit]

I, the copyright holder of this work, hereby publish it under the following licenses:
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File history

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Date/TimeThumbnailDimensionsUserComment
current02:45, 18 January 2008Thumbnail for version as of 02:45, 18 January 20082,304 × 1,414 (751 KB)Cosmo1976{{Information |Description= Chicago City Datum Plaque |Source= self-made |Date= July 13, 2006 |Author= Cosmo1976 |Permission= |other_versions= }}
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