| NOS/NIMA | |
|---|---|
| HW | High water |
| HHW | Higher high water |
| LW | Low water |
| LWD | Low-water datum |
| MTL | Mean tide level |
| ISLW | Indian spring low water |
| HWF&C | High-water full and change (vulgar establishment of the port) |
| LWF&C | Low-water full and change |
| CRD | Columbia River Datum |
| GCLWD | Gulf Coast Low Water Datum |
| Str | Stream |
 |
Current, general, with rate |
| vel | Velocity; Rate |
| Str | Stream |
| Kn | Knots |
| ht | Height |
| fl | Flood |
| Str | Stream |
 |
New moon |
 |
Full moon |
 |
Current diagram |