Joliet Central High School benchmarks - Joliet, IL
Posted by: Groundspeak Premium Member adgorn
N 41° 31.502 W 088° 04.499
16T E 410312 N 4597601
Quick Description: Two benchmarks on either side of doorway entrance to school measuring elevation with regard to local and coastal sea level.
Location: Illinois, United States
Date Posted: 7/21/2010 12:09:42 PM
Waymark Code: WM9AA5
Published By: Groundspeak Premium Member Ernmark
Views: 5

Long Description:
On the left, a square benchmark marks both height above New York Harbor sea level as 545.674 feet and height below Lake Michigan Chicago Datum as 34.156 feet.

On the right, a circular benchmark from the US Geological Survey dated 1920 marking 546 feet above sea level. (Also indicating a $250 fine if you chisel it out of the wall!)

Found by pure luck while locating bust of Joliett high overhead for another waymark.
Condition: Mark found in good condition

Designation: US Geological Survey

Benchmark Agency: U.S. Geological Survey

Monumentation type: BENCH MARK (or B.M.) Disk

County: Will County

Find type: Found by luck/skill/knowledge

Benchmark Agency (if other): Not listed

Monumentation type (if other): Not listed

USGS 7.5' Topographic Quadrangle Name (optional): Not listed

Special category (optional): Not listed

Special Category (if other): Not listed

Web address of this benchmark's datasheet (optional): Not listed

NGS PID: Not listed

Local database's URL (optional): Not listed

Visit Instructions:
  1. A closeup photo of the mark taken by you is required.
  2. A 'distant' photo including the mark in the view is highly recommended. Include the compass direction you faced when you took the picture.
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