The information in this package has been assembled for
the use of Broward County Public Works Department for the design and development
of Public Works Projects. No degree or order of accuracy has been assigned to
data in this package. Although this package has been prepared from the best
available information, Broward County assumes no responsibility for the accuracy
or completeness of the information or any errors or omission and makes no
warranties, express or implied, concerning accuracy, completeness, reliability
or suitability of this data. This data should not be relied upon as the sole
basis for solving a problem whose incorrect solution could result in injury to
person or property.
Elevations must be verified consistent with procedures established by
472 Florida Statutes "Land Surveying and Mapping" and the Florida
Code Chapter 61617-6 "Minimum Technical Standards".
The benchmarks are arranged by Section, Township and Range. The reference
show the approximate location of each numbered benchmark.
The cities of Fort Lauderdale and Hollywood have additional
information for their respective jurisdictions. Please contact
directly for this information.
FIRST EDITION - March, 1999
The following map and information has
been made available for anyone interested (in particular the surveying,
engineering, mapping and construction community) to simplify the process of
locating and obtaining information about available benchmarks within Broward
A benchmark is a relatively permanent material object, natural or artificial,
bearing a marked point whose elevation above or below an adopted datum is known.
Common examples of benchmarks are metal disks set in concrete or a corner of a
concrete headwall or sidewalk. An elevation is defined as the vertical distance,
along a line that follows the direction of gravity as indicated by a plumb line,
from a datum to a point or object.
The datum used by the Broward County Highway Construction & Engineering Division – Survey Section is
the National Geodetic Vertical Datum of 1929 (NGVD 29’). This datum is a
nationwide reference surface for elevations throughout the United States
generated by the National Geodetic Survey (NGS). NGVD 29 was established by
leveling between 26 tidal stations located along the coasts of the United States
and Canada. Leveling is the process of determining elevations of points or their
difference in elevation. A tidal station is the geographic location at which
tidal observations are conducted. The year 1929 indicates the year when all the
field-leveling observations were finally adjusted by the National Geodetic
NGVD 29 is a fixed datum and does not take
into account the changing stands of sea level. Because there are many variables
affecting sea level, and because this datum is a best fit over such a broad
area, the relationship between the NGVD 29 datum and local mean sea level is not
consistent from one location to another in either time or space. For this
reason, the National Geodetic Vertical Datum of 1929 (NGVD 29’) should not be
confused with mean sea level.
PSM Broward County Surveyor