A collection of aquifers and aquitards, which together constitute the environment of groundwater - "communicating vessels", that are filled or can be filled with water. 
-- Description -- 
Attributes of Aquifer System and its components determine the feasibility of water collection, its movement, as well as the impact on its chemical state.
NOTE: The Aquifer System components and their attributes (including geometry) are relatively stable over time except in special cases.
        
     
            
    
    
        
                
                    
                        | Egenskap | Stereotype | Beskrivelse | Type | Multiplisitet | 
                
                    
                        | isLayered | voidable | -- Name --
Is Layered | Boolean | 1..1 | 
        
     
    
        
                
                    
                        | Navn | Type | Lengde | Multiplisitet | 
                
                    
                        |  | Boolean |  | 1..1 | 
        
     
    
        
            
                
                    | Name | Type | English | Description | 
            
                
                    | isLayered | Boolean |  | Indicates if the AquiferSystem consists of more than one layer. |