Historical Survey Marker - Cairo, IL
Posted by: YoSam.
N 36° 59.254 W 089° 09.021
16S E 308626 N 4095654
Indicates 3rd Principal Meridian
Waymark Code: WMM0F9
Location: Illinois, United States
Date Posted: 06/27/2014
Views: 19
County of marker: Alexander County
Location of marker: US 60/US 51, parking lot at entrance to Fort Defiance, Cairo
Marker text:
HISTORICAL SURVEY MARKER
The beginning of the Third Principal Meridian is located in the Ohio River 1,735 feet directly North of this point.
In November, 1803, this was the mouth of the Ohio River. At this location, the Lewis and Clark Corps of Discovery encamped for six days