ANNOUNCEMENT

The Products and Services Committee of NGS voted to rescind the 1998 NGS policy which stated that a transformation would be provided between older versions of NAD 83 and NAD 83(NSRS2007). Initial tests indicated that the shifts were too small, the accuracy of the shifts too large, and sparseness of the data too great to produce a useful transformation.

Users who wish to transform existing surveys from an older version of NAD 83 into NAD 83(NSRS2007) are urged to recompute coordinates using original observations and newly published NAD 83(NSRS2007) coordinates.