A surface that represents the interpolated groundwater table, or other surface, for a local or regional area.
-- Description --
This is the 2.5D geometry for hydrogeological surfaces and is based on hydrogeological measurements in a group of wells or other sources of data.
        
     
            
    
    
    
        
                
                    
                        | Navn | Type | Lengde | Multiplisitet | 
                
                    
                        |  | RectifiedGridCoverage |  | 1..1 | 
                    
                        |  | ReferenceableGridCoverage |  | 1..1 | 
                    
                        |  | PointObservationCollection |  | 1..1 | 
        
     
    
        
            
                
                    | Name | Type | English | Description | 
            
                
                    | surfaceRectifiedGrid | RectifiedGridCoverage |  | A surface whose domain is a rectified grid.
-- Description --
A rectified grid is a grid for which there is an affine transformation between the grid coordinates and the coordinates of a coordinate system. It can be used for both discrete and continuous coverages. | 
                
                    | surfaceReferencableGrid | ReferenceableGridCoverage |  | Surface whose domain consists of a referenceable grid.
-- Description --
A referenceable grid is a grid associated with a transformation that can be used to convert grid coordinate values to values of coordinates referenced to a coordinate reference system. It can be used for both discrete and continuous coverages. | 
                
                    | surfacePointCollection | PointObservationCollection |  | Hydrogeological surface represented by collection of observations in points. |