Used in the tides and water level data system to describe the datums for the measurements.
| Code | Description | Last time modified |
|---|---|---|
| ARBI | Arbitrary Datum | 5/12/2003 7:38:51 AM |
| CHRT | Chart Datum | 5/20/2003 8:24:06 AM |
| DPWD | Dept. of Public Works Datum | 5/12/2003 7:40:22 AM |
| GEOD | Geod. Datum | 5/12/2003 7:40:36 AM |
| IGLD | International Great Lakes Datum - 1955 | 5/12/2003 7:41:31 AM |
| IG85 | IGLD - 1985 | 5/20/2003 8:24:30 AM |
| UNKN | Leave blank on output | 5/20/2003 8:25:06 AM |
| SNDG | Sounding datum | 5/12/2003 7:42:59 AM |