| General Soil Type: | Rz | Region: | R |
| Map Unit Description: | Wet, acid soils on deltas and tideflats that are less than 12 feet |
| above sea level and are affected by tides and/or marine |
| saltwater intrusion |
| Moisture Regime: | Aquic |
| Temperature Regime: | Mesic |
| Taxonomic Classification: | Sulfic Fluvaquents |
| Major Soil Series: | Tacoma-Eliza-Ocosta |