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the Degree Confluence Project
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United States : Ohio

2.0 miles (3.2 km) SW of Linden, Columbus, Franklin, OH, USA
Approx. altitude: 244 m (800 ft)
([?] maps: Google MapQuest Multimap topo aerial world confnav)
Antipode: 40°S 97°E

Accuracy: 9 m (29 ft)
Click on any of the images for the full-sized picture.

#2: View West (along the service lane) #3: View North #4: View East (along the service lane) #5: The confluence point lies just inside this building #6: GPS as close as I could get - along the building’s south wall - 6 feet from the point #7: ‘Half zeros’ - 83 Degrees West; just beyond 40 Degrees North #8: Looking down at the confluence point from 400 feet above.  (The point lies just below the center of this image.) #9: View North from 400 feet above the point #10: View East (of the Ohio Expo Center and Fairgrounds) from 400 feet above the point #11: View South (towards downtown Columbus) from 400 feet above the point #12: View West (of Ohio State University) from 400 feet above the point

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  40°N 83°W (visit #7)  

#1: View South (towards the confluence point, which lies just inside this building)

(visited by Ross Finlayson)

24-May-2018 -- My final visit to a Degree Confluence Point during this vacation was to this remarkable point in Columbus, Ohio. A few other Degree Confluence Points in the U.S. happen to lie within cities - e.g., in St. Paul, Memphis, and Tulsa - but this one might have the highest population density of them all. As previous visitors had noted, the secret to reaching this point is to get to the service lane that runs between (and parallel to) E. 16th Avenue and E. 15th Avenue (the two streets that pass north and south of the point).

The point itself lies just inside one of the buildings in this service lane. By standing next to the building, I was able to get within 6 feet (+/- GPS error of 20 feet) of the point, but couldn’t get ‘all zeros'. The previous visitor - David Combs, in October 2008 - was able to get ‘all zeros’ by standing in the service road, and he wondered why. There are two reasons for this. First, the GPS error in this location is quite high, because of all of the buildings nearby. Second, David Combs had his GPS receiver display coordinates using the “DD MM.MMM” format, which gives you significantly less resolution than the “DD.DDDDD” format (which is the format that everyone should use).


 All pictures
#1: View South (towards the confluence point, which lies just inside this building)
#2: View West (along the service lane)
#3: View North
#4: View East (along the service lane)
#5: The confluence point lies just inside this building
#6: GPS as close as I could get - along the building’s south wall - 6 feet from the point
#7: ‘Half zeros’ - 83 Degrees West; just beyond 40 Degrees North
#8: Looking down at the confluence point from 400 feet above. (The point lies just below the center of this image.)
#9: View North from 400 feet above the point
#10: View East (of the Ohio Expo Center and Fairgrounds) from 400 feet above the point
#11: View South (towards downtown Columbus) from 400 feet above the point
#12: View West (of Ohio State University) from 400 feet above the point
ALL: All pictures on one page (broadband access recommended)