Geodetic and Geographic Centers (roughly)

Kansas has two interesting center points: the Geographic Center of the Contiguous 48 States in Lebanon, and the Geodetic Center of North America in Osborne. My understanding is the placement of the geodetic center is mostly a correction from the geographic center in order to account for the curvature of the Earth.

A+historical+marker+explaining+the+Geodetic+center+of+North+America.+It+says%3A+On+a+ranch+18+miles+southeast+of+this+marker+a+bronze+plate+marks+the+most+important+spot+on+this+continent+to+surveyors+and+map+makers.+Engraved+in+the+bronze+is+a+cross-mark+and+on+the+tiny+point+where+the+lines+cross+depend+the+surveys+of+a+sixth+of+the+world%E2%80%99s+surface.+This+is+the+Geodetic+Center+of+the+United+States%2C+the++%22Primary+Station%22+for+all+North+American+surveys.+It+was+located+in+190l+by+the+U.S.+Coast+and+Geodetic+Survey.+Later+Canada+and+Mexico+adopted+the+point+and+its+supporting+system+as+the+base+for+their+surveys+and+it+is+now+Known+as+the+%22North+American+Datum.%22+What+Greenwich+is+to+the+Longitude+of+the+world%2C+therefore%2C+a+Kansas+pasture+is+to+the+lines+and+boundaries+of+this+continent.+It+must+not+be+confused+with+the+Geographic+Center+of+the+United+States%2C+which+is+42+miles+north%2C+in+Smith+County.%0A++Erected+by+Kansas+Historical+Society+and+State+Highway+Commission
A+granite+block+with+a+bronze+disc+towards+the+top+center.+The+disc+says%3A+%22For+information+or+to+report+damage+write%0AThe+Director%0ANational+Geodetic+Survey%0AWashington%2C+D.C.%0A%0AHorizontal+control+mark%0AMeades+Ranch+1891%22%0ABeneath+the+disc+it+says%3A+%22This+bronze+disc+is+a+replica+of+the+actual+marker+for+the+Geodetic+Center+of+North+America%2C+located+south+of+Osborne.+Placed+by+the+Osborne+Area+Chamber+of+Commerce%22

I love how up-front they are that this is not the real marker; that it’s actually almost twenty miles away. The real one is on private property and apparently you can get permission to visit it. I wonder how often people ask and how tired the property owner is with fielding requests.

Maybe next time I’m in Kansas.

The geographic center’s marker is weirder. First, it’s not a benchmark, because it’s not actually used for surveying. But it does have this plaque that describes what it’s about, and gives you the coordinates of the center: 39°50′N, 98°35′W. But, if you have a GPS with you, you’ll find the marker is almost half mile away from there.

A+bronze+plaque+explaining+the+Geographic+Center+of+the+United+States.+It+begins+with+the+text%3A+%22THE%0A++GEOGRAPHIC+CENTER%0A++OF+THE%0A++UNITED+STATES%0A++LAT.+39%C2%B050%E2%80%B2+LONG.+98%C2%B035%E2%80%B2%0A++NE+1%2F4+-+SE+1%2F4+-+S32-T2S-R11W%22%0A++There+is+a+diagram+that+I+find+very+confusing%2C+but+presumably+explains+to+surveyors+the+methodology+behind+locating+the+center.+The+text+then+continues%3A+%22LOCATED+BY+L.T.+HAGADORN+OF+PAULETTE+%26+WILSON+-+ENGINEERS+AND+L.A.+BEARDSLEE+-+COUNTY+ENGINEER.%0A++FROM+DATA+FURNISHED+BY+U.S.COAST+AND+GEODETIC+SURVEY.%0A++SPONSORED+BY%0A++LEBANON+HUB+CLUB%0A++LEBANON%2C+KANSAS%0A++APRIL+25.1940%22

The little park around the geographic center also has this weird tiny chapel.

The+interior+of+a+small+chapel%2C+there+are+6+visible+seats%2C+a+small+lectern%2C+and+a+map+of+the+48+contiguous+states+painted+like+an+American+flag%2C+with+a+cross+and+a+heart+layered+over+it.+A+sign+saying+

The sidewalk has also been recently redone, and as an added touch they put these little US map outlines (undoubtedly from a cookie cutter) with a small x in the center. I genuinely love this.

A+small+US+map+stamped+into+the+concrete+of+a+sidewalk.+There+is+a+small+x+in+the+center+of+the+map.