CITY VERTICAL CONTROL
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The Datum of the majority of the City of Sacramento benchmarks is the National Geodetic Vertical Datum of 1929 (NGVD 29) and was based upon a plane datum with reference to four U.S. Government monuments. Only these four monuments served as the basis for the City’s NGVD Datum. These monuments are as follows:
- 297-D3B, and
- 297-D4B, as described in the City's benchmark database.
Some North American Vertical Datum 1988 (NAVD 88) differential baselines have been conducted and the elevations of those benchmarks have been included and identified in this database.
Any problems or suggestions regarding the elevations or descriptions of benchmarks contained in this database can be directed to the Supervising Surveyor at 916-808-8777.
To find a benchmark within the City of Sacramento, select the page and grid from the Thomas Bros Guide of the area you need and "Search." All benchmarks within the selected grid will be displayed. To print, click the check box in the benchmark records you need, and then click the "Print" button. This database is continually being updated.