La. Admin. Code tit. 43 § XXVII-505

Current through Register Vol. 50, No. 12, December 20, 2024

Section XXVII-505 - Vertical Datum

A. All vertical control densification shall be based upon the National Geodetic Vertical Datum of 1929 (NGVD 29), latest adjustment, as established and published by NGS.

B. Following final development and publication of the new North American Vertical Datum of 1988 (NAVD 88), all subsequent vertical control densification shall be based on the NAVD 88 datum.

C. Optional survey references may be established between the NGVD 29 and subsequent NAVD 88 datum for correlation of archival vertical control data. However, coordinate transformation programs or computational techniques shall not be used to convert elevations from one datum to another without local field survey network verification.

La. Admin. Code tit. 43, § XXVII-505

Promulgated by the Office of the Governor, Division of Administration, State Land Office, LR 17:968 (October 1991).

AUTHORITY NOTE: Promulgated in accordance with R.S. 50:171.