USGS
Bench Mark
"DW 6304"

ca. 1898

Jerry Penry
September 25, 2015

This bench mark is located on the South Dakota/Wyoming state line approximately 16 miles west of Deadwood. Two attempts to locate this monument have been made with no success. The first on October 4, 2014, and the second on September 25, 2015. According to the USGS leveling notes, the bench mark was placed 2.1' southeast of the GLO closing corner. The GLO notes indicate that it was 2 links south and 2 links east of the Closing Corner. No evidence of the closing corner could be found either. A primitive trail road meanders along the state line from the north and abruptly makes a turn to the northwest at this location. There is also a culvert pipe buried here so construction might have destroyed the monument. Kurt Luebke and Dave Ingram assisted in the second search.

USGS 1902 Sundance quad sheet showing the location of the bench mark at the Closing Corner on the WY/SD State Line.

USGS leveling notes describing DW 6304.

GLO field notes showing the location of the bench mark in relationship to the Closing Corner.

Looking north in the general area where the bench mark was thought to have been located.

Looking northeast into the trees where the corner might have been located.

Possible "Line Tree" on the Wyoming/South Dakota state line.

Other Deadwood Datum Bench Marks

© Jerry Penry 2015