Louisiana Administrative Code
Title 43 - NATURAL RESOURCES
Part XXVII - State Lands
Subpart 1 - Land Information Mapping and Map Records System
Chapter 5 - Ground Control
Section XXVII-505 - Vertical Datum

Universal Citation: LA Admin Code XXVII-505

Current through Register Vol. 50, No. 9, September 20, 2024

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.

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

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