NAD 83 READJUSTMENT

HARN COMPLETION - SEPTEMBER 1997

(Indiana)

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GPS HEIGHT MODERNIZATION OBSERVATIONS

(1997 - 2004?)

(Virginia, Maryland and Delaware Observed 2000)

(http://www.ngs.noaa.gov/initiatives/height_modernization.shtml)

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COMPLETE GPS NAD 83 3-D ADJUSTMENT

(http://www.ngs.noaa.gov/initiatives/new_reference.shtml)

(2005?)

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REMOVAL OF SMALL REGIONAL DISTORTIONS

(3 - 6 CM)

UNIFORM COORDINATE TAG