soil map units where Oa Okoa soils (Oa) is dominant
                
            
        Soil properties
| Property | Value | 
|---|---|
| Geographic distribution | Vava’u | 
| Landscape position | Low-lying ground, often old raised lagoon areas. | 
| Soil parent material | - | 
| Slope | Flat | 
| Surface outcrops | - | 
| Brief soil profile description | Deep peaty loam but not described in full. | 
| Soil profile texture | - | 
| Minimum effective rooting depth | <75 cm | 
| Soil pH (acidity) | n.d. | 
| Salinity | - | 
| Soil fertility under natural conditions | n.d. | 
| Soil moisture regime | - | 
| Susceptibility to drought | - | 
| Soil drainage | Very poorly drained | 
| Susceptibility to waterlogging | Severe poor drainage | 
| Susceptibility to flooding | Floods periodically in wet season. | 
 
                         
                         
                        