Cairo in Alexander County, Illinois — The American Midwest (Great Lakes)
The Beginning of the Third Principal Meridian
in the Ohio River
of this point.
In November, 1803,
this was the mouth
of the Ohio River.
At this location,
the Lewis & Clark
Corps of Discovery
Marker series. This marker is included in the Lewis & Clark Expedition marker series.
Location. 36° 59.554′ N, 89° 9.471′ W. Marker is in Cairo, Illinois, in Alexander County. Marker is on Washington Avenue (U.S. 60/62), on the right when traveling south. Touch for map. Marker is in this post office area: Cairo IL 62914, United States of America. Touch for directions.
Other nearby markers. At least 8 other markers are within 2 miles of this marker, measured as the crow flies. The Ohio River Bridge (approx. half a mile away); Lewis and Clark in Illinois (approx. half a mile away); Historical Survey Marker (approx. half a mile away); Lewis & Clark (approx. half a mile away); Cairo, Illinois (approx. half a mile away); Duncan Cannon (approx. one mile away); York the Slave The Meeting of the Rivers (approx. 1.2 miles away). Touch for a list and map of all markers in Cairo.
Related markers. Click here for a list of markers that are related to this marker. Third Meridian Markers.
Categories. • Exploration •
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Credits. This page was last revised on June 16, 2016. This page originally submitted on May 28, 2009, by Craig Swain of Leesburg, Virginia. This page has been viewed 1,685 times since then and 8 times this year. Photos: 1, 2. submitted on May 28, 2009, by Craig Swain of Leesburg, Virginia.