| Datum | Value | Description |
|---|---|---|
| MHHW | 6.23 | Mean Higher-High Water |
| MHW | 5.81 | Mean High Water |
| MTL | 2.99 | Mean Tide Level |
| MSL | 3.06 | Mean Sea Level |
| DTL | 3.12 | Mean Diurnal Tide Level |
| MLW | 0.18 | Mean Low Water |
| MLLW | 0.00 | Mean Lower-Low Water |
| NAVD88 | ||
| CRD_OFFSET | Columbia River Datum Offset | |
| STND | -18.39 | Station Datum |
| GT | 6.23 | Great Diurnal Range |
| MN | 5.63 | Mean Range of Tide |
| DHQ | 0.42 | Mean Diurnal High Water Inequality |
| DLQ | 0.17 | Mean Diurnal Low Water Inequality |
| HWI | 2.43 | Greenwich High Water Interval (in hours) |
| LWI | 9.06 | Greenwich Low Water Interval (in hours) |
| Max Tide | 9.44 | Highest Observed Tide |
| Max Tide Date & Time | 12/21/2012 09:30 | Highest Observed Tide Date & Time |
| Min Tide | -3.10 | Lowest Observed Tide |
| Min Tide Date & Time | 01/04/2010 00:00 | Lowest Observed Tide Date & Time |
| HAT | 7.81 | Highest Astronomical Tide |
| HAT Date & Time | 05/26/1994 03:06 | HAT Date and Time |
| LAT | -1.34 | Lowest Astronomical Tide |
| LAT Date & Time | 01/21/1996 22:06 | LAT Date and Time |
| Tidal Datum Analysis Periods |
|---|
| 05/01/2003 - 04/30/2008 |
| 12/01/2009 - 11/30/2015 |