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See [:EasternObliqueArc:Eastern Oblique Arc] See [[EasternObliqueArc|Eastern Oblique Arc]]
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[[ImageLink(http://www.holoscenes.com/images/bmwiki/oblique/NavWest.png,ObliqueArcDauphinIslandWest1,width=16,height=576,alt=First Section West of 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)]] [[ObliqueArcDauphinIslandWest1|{{http://www.holoscenes.com/images/bmwiki/oblique/NavWest.png|First Section West of Dauphin Island Base Line|width=16, height=576}}]][[http:/images/bmwiki/oblique/Dauphin_Island_Base.png]][[ObliqueArcAtlantaWest5|{{http://www.holoscenes.com/images/bmwiki/oblique/NavEast.png|Fifth Section West of Atlanta|width=16, height=576}}]]
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||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 ||
||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 ||

Oblique Arc - Dauphin Island Base Line

The Dauphin Island base net was surveyed in two stages. The base line itself was measured in 1847 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 Eastern Oblique Arc

First Section West of Dauphin Island Base Linehttp:/images/bmwiki/oblique/Dauphin_Island_Base.pngFifth Section West of Atlanta

Name

PID

Monumented

Destroyed

Designation

Spring Hill

BH2023

1897

SPRING HILL RESET

Daphne

BG4149

1897

Y

DAPHNE

St. Elmo

BH2017

Y

ST ELMO

Fort Morgan

BH2142

1978

FORT MORGAN RESET

Dauphin Island East Base

BH2145

1846

Y

DAUPHIN ISLAND EAST BASE

Dauphin Island West Base

BH2148

1846

DAUPHIN ISLAND WEST BASE

Cedar Point

BH2103

Y

CEDAR POINT

Cat Island

BH2131

Y

CAT ISLAND

Point aux Pins

BH2188

Y

POINT AUX PINS

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