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The Dauphin Island base net was surveyed in two stages. The base line itself was measured in 1847-1848 and connected with the coastal survey from Mobile to New Orleans. Later in 1895-1898 triangulation was brought from Atlanta to Mobile Bay and connected with the earlier base line survey.

Oblique Arc - Dauphin Island Base Line

The Dauphin Island base net was surveyed in two stages. The base line itself was measured in 1847-1848 and connected with the coastal survey from Mobile to New Orleans. Later in 1895-1898 triangulation was brought from Atlanta to Mobile Bay and connected with the earlier base line survey.

See [:EasternObliqueArc:Eastern Oblique Arc]

ImageLink(http://www.holoscenes.com/images/bmwiki/oblique/NavWest.png,ObliqueArcDauphinIslandBaseline,width=16,height=576,alt=Dauphin Island Base Line)[http:/images/bmwiki/oblique/Dauphin_Island_Base.png][[ImageLink(http://www.holoscenes.com/images/bmwiki/oblique/NavEast.png,ObliqueArcAtlantaWest5,width=16,height=576,alt=Fifth Section West of Atlanta)]]

Name

PID

Monumented

Destroyed

Designation

Spring Hill

[http://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=BH2023 BH2023]

1897

SPRING HILL RESET

Daphne

[http://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=BG4149 BG4149]

1897

Y

DAPHNE

St. Elmo

[http://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=BH2017 BH2017]

Y

ST ELMO

Fort Morgan

[http://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=BH2142 BH2142]

1978

FORT MORGAN RESET

Dauphin Island East Base

[http://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=BH2145 BH2145]

1846

Y

DAUPHIN ISLAND EAST BASE

Dauphin Island West Base

[http://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=BH2148 BH2148]

1846

DAUPHIN ISLAND WEST BASE

Cedar Point

[http://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=BH2103 BH2103]

Y

CEDAR POINT

Cat Island

[http://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=BH2131 BH2131]

Y

CAT ISLAND

Point aux Pins

[http://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=BH2188 BH2188]

Y

POINT AUX PINS

ObliqueArcDauphinIslandBaseline (last edited 2009-03-21 22:44:16 by JimIrwin)