1983 datum with 1993 corrections

11-04-2020 07:50 AM
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I'm trying to map point from survey plats that are using a state plane coordinate system with 1983 datum with 1993 corrections. With further research it seems they would fall under 1883 HARN, but this is still visually off by 500 yards or so.  Does anyone have another idea of the datum I should use or have familiarity with mapping points with this datum?

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