Jerry Penry
Paul Horsted and Kurt Luebke


The Harney Peak Lookout Tower as viewed from the west in September 2016. - Jerry Penry photo.


For the past 115 years, the elevation of Harney Peak (renamed Black Elk Peak in August of 2016) has been listed on numerous documents and in publications as being around 7240' to 7244' above sea level. Where did this number originate, to which point is the elevation measured, and how accurate is the elevation in actuality in regard to its true elevation? This story tells the history of South Dakota's most famous peak and highest point. For historical reasons, and with no disrespect to this peak's present name, we refer to it as "Harney Peak" for which it was first named in the 1850's. The historical data, references, and other information gathered here all refer to this peak as "Harney Peak", so to herein refer to it by its present name would be confusing in this historical context.

On September 15-16, 2016, Jerry Penry, Kurt Luebke, and Paul Horsted endeavored to determine the elevation of this peak. They were assisted by Daryl Stisser, Jenny Stukel Penry, Camille Riner and Anna Marie Riner. This precise survey was done to mostly satisfy curiosity, but at the same time resolve misinformation that exists as to where the elevation is actually measured to on the peak. Furthermore, the existence of a separate peak 100 yards south of the Lookout Tower has also been claimed as being the true highest point, so that issue also needed to be resolved. To distinguish this peak from the peak where the Lookout Tower resides, we have unofficially named it "McGillicuddy Peak" and will appear with that name on these pages.

Our survey concluded that the highest natural rock today on Harney Peak, when rounded to the nearest foot is 7231' on the North American Vertical Datum of 1988 (NAVD88). A projected shift to take place in 2022 will place this same point at 7229' on the National Spatial Reference System (NSRS) which will be the latest vertical datum.


THE SURVEY

EARLY YEARS
1874 to 1897
PRE-TOWER YEARS
1898 to 1910
TOWER YEARS
1911-1919-1938

ORIGINAL
ELEVATION
McGILLICUDDY
PEAK

TRIANGULATION STATION
"HARNEY"
DATUMS
1893 USGS
TRIANGULATION
1897 USGS
TRIANGULATION
QUAD SHEETS

LOOKOUT TOWER
CONSTRUCTION PLANS



© Jerry Penry 2016
Please contact before using text or images from these webpages.

CONTACT