Aquifer System - Spatial object type

Definition: 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.

INSPIRE Data Theme: Geology - [INSPIRE Data Theme Geology]

INSPIRE Application schema: Hydrogeology - [INSPIRE Application schema Hydrogeology]

Subtype of: Hydrogeological Unit


Attributes

Definition: Indicates if the AquiferSystem consists of more than one layer.

Multiplicity: 1

Stereotypes: voidable

Valuetype: Boolean

Definition: The description of the HydrogeologicalUnit

Multiplicity: 1

Stereotypes: voidable

Valuetype: PT_FreeText

Definition: The approximate depth of the HydrogeologicalUnit occurrence.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The approximate thickness of the HydrogeologicalUnit.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: Date and time at which this version of the spatial object was inserted or changed in the spatial data set.

Multiplicity: 1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: Date and time at which this version of the spatial object was superseded or retired in the spatial data set.

Multiplicity: 0...1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: The type of geological the unit.

Description: Logical constraints of definition of unit and valid property cardinalities should be contained in the definition.

Multiplicity: 1

Valuetype: GeologicUnitTypeValue

Definition: External object identifier of the spatial object.

Multiplicity: 1

Valuetype: Identifier

Definition: The name of the geologic feature.

Description: EXAMPLE: a lithostratigraphic unit, mineral occurrence, or major fault. Not all GeologicFeatures will have names, for example minor faults.

Multiplicity: 1

Stereotypes: voidable

Valuetype: CharacterString


Associated objects - Optional

Definition: A configuration of matter in the Earth based on describable inhomogeneity, pattern, or fracture in an earth material.

Description: The identity of a GeologicStructure is independent of the material that is the substrate for the structure.

Multiplicity: 0..*

Name of the association: geologic Structure

Association definition: Relates one or many HydrogeologicalUnit(s) to a GeologicStructure.

INSPIRE Data Theme: Geology - [INSPIRE Data Theme Geology]

INSPIRE Application schema: Geology - [INSPIRE Application schema Geology]

Supertype of: Fold ShearDisplacementStructure

Subtype of: GeologicFeature


Attributes

Definition: External object identifier of the spatial object.

Multiplicity: 1

Valuetype: Identifier

Definition: The name of the geologic feature.

Description: EXAMPLE: a lithostratigraphic unit, mineral occurrence, or major fault. Not all GeologicFeatures will have names, for example minor faults.

Multiplicity: 1

Stereotypes: voidable

Valuetype: CharacterString


Associated objects - Mandatory

Definition: An identifiable event during which one or more geological processes act to modify geological entities.

Description: A GeologicEvent should have a specified geologic age and process, and may have a specified environment. An example might be a cratonic uplift event during which erosion, sedimentation, and volcanism all take place. A GeologicEvent age can represent an instant in time or an interval of time.

Multiplicity: 1..*

Name of the association: geologic History

Association definition: An association that relates one or more geologic events to a geologic feature to describe their age or geologic history.

INSPIRE Data Theme: Geology - [INSPIRE Data Theme Geology]

INSPIRE Application schema: Geology - [INSPIRE Application schema Geology]


Attributes

Definition: The name of the Geologic Event.

Description: Only major Geologic Events, such as orogenies, are likely to have names.

Multiplicity: 1

Stereotypes: voidable

Valuetype: CharacterString

Definition: The physical setting within which the geologic event takes place.

Description: GeologicEnvironment is construed broadly to include physical settings on the Earth surface specified by climate, tectonics, physiography or geography, and settings in the Earth’s interior specified by pressure, temperature, chemical environment, or tectonics.

Multiplicity: 1

Stereotypes: voidable

Valuetype: EventEnvironmentValue

Definition: The process or processes that occurred during the geologic event.

Description: EXAMPLE: deposition, extrusion, intrusion, cooling.

Multiplicity: 1...*

Stereotypes: voidable

Valuetype: EventProcessValue

Definition: Older boundary of the age of the event.

Description: This is expressed using a geochronologic era defined in a vocabulary of recognised units, such as those of the International Commission on Stratigraphy (ICS) Stratigraphic Chart.

Multiplicity: 1

Stereotypes: voidable

Valuetype: GeochronologicEraValue

Definition: Younger boundary of the age of the event.

Description: This is expressed using a geochronologic era defined in a vocabulary of recognised units, such as those of the International Commission on Stratigraphy (ICS) Stratigraphic Chart.

Multiplicity: 1

Stereotypes: voidable

Valuetype: GeochronologicEraValue

Definition: An impermeable body of rock or stratum of sediment that acts as a barrier to the flow of groundwater.

Description: A formation which, although porous and capable of absorbing water slowly, will not transmit water fast enough to furnish an appreciable supply for a well or spring. Aquicludes are characterized by very low values of "leakage" (the ratio of vertical Hydraulic Conductivity to thickness), so that they transmit only minor inter-aquifer flow and also have very low rates of yield from compressible storage. Therefore, they constitute boundaries of aquifer flow systems.

Multiplicity: 0..*

Name of the association: aquiclude

Association definition: An Aquiclude enclosing the AquiferSystem.

INSPIRE Data Theme: Geology - [INSPIRE Data Theme Geology]

INSPIRE Application schema: Hydrogeology - [INSPIRE Application schema Hydrogeology]

Subtype of: HydrogeologicalUnit


Attributes

Definition: The description of the HydrogeologicalUnit

Multiplicity: 1

Stereotypes: voidable

Valuetype: PT_FreeText

Definition: The approximate depth of the HydrogeologicalUnit occurrence.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The approximate thickness of the HydrogeologicalUnit.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: Date and time at which this version of the spatial object was inserted or changed in the spatial data set.

Multiplicity: 1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: Date and time at which this version of the spatial object was superseded or retired in the spatial data set.

Multiplicity: 0...1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: The type of geological the unit.

Description: Logical constraints of definition of unit and valid property cardinalities should be contained in the definition.

Multiplicity: 1

Valuetype: GeologicUnitTypeValue

Definition: External object identifier of the spatial object.

Multiplicity: 1

Valuetype: Identifier

Definition: The name of the geologic feature.

Description: EXAMPLE: a lithostratigraphic unit, mineral occurrence, or major fault. Not all GeologicFeatures will have names, for example minor faults.

Multiplicity: 1

Stereotypes: voidable

Valuetype: CharacterString


Associated objects - Optional

Definition: A configuration of matter in the Earth based on describable inhomogeneity, pattern, or fracture in an earth material.

Description: The identity of a GeologicStructure is independent of the material that is the substrate for the structure.

Multiplicity: 0..*

Name of the association: geologic Structure

Association definition: Relates one or many HydrogeologicalUnit(s) to a GeologicStructure.

INSPIRE Data Theme: Geology - [INSPIRE Data Theme Geology]

INSPIRE Application schema: Geology - [INSPIRE Application schema Geology]

Supertype of: Fold ShearDisplacementStructure

Subtype of: GeologicFeature


Attributes

Definition: External object identifier of the spatial object.

Multiplicity: 1

Valuetype: Identifier

Definition: The name of the geologic feature.

Description: EXAMPLE: a lithostratigraphic unit, mineral occurrence, or major fault. Not all GeologicFeatures will have names, for example minor faults.

Multiplicity: 1

Stereotypes: voidable

Valuetype: CharacterString

Definition: A wet underground layer of water-bearing permeable rock or unconsolidated materials (gravel, sand, silt, or clay) from which groundwater can be usefully extracted using a water well.

Description: An underground geological formation able to store and yield water.

Multiplicity: 0..*

Name of the association: aquifer

Association definition: The Aquifer(s) contained in the AquiferSystem.

INSPIRE Data Theme: Geology - [INSPIRE Data Theme Geology]

INSPIRE Application schema: Hydrogeology - [INSPIRE Application schema Hydrogeology]

Subtype of: HydrogeologicalUnit


Attributes

Definition: The type of aquifer.

Description: Water in an Aquifer is, or is not, under pressure. Based on that unconfined, confined, artesian, or subartesian types are distinguished.

Multiplicity: 1

Valuetype: AquiferTypeValue

Definition: The classification of the medium in which the groundwater flow occurs.

Multiplicity: 1

Valuetype: AquiferMediaTypeValue

Definition: Indicates if groundwater from aquifer is exploited by wells or intakes

Multiplicity: 1

Stereotypes: voidable

Valuetype: Boolean

Definition: Indicates if aquifer is the main useful aquifer in the aquifer system

Multiplicity: 1

Stereotypes: voidable

Valuetype: Boolean

Definition: An index value or interval of values determining the potential degree of aquifer risk arising from the geological structure, hydrogeological conditions and the existence of real or potential source of contamination.

Description: A single value should be used if it is determined directly from the DRASTIC method. If attribute data comes from another data source which is expressed by categorized items, for example: low, moderate or high, interval should be used expressed by lowest and highest value of category. EXAMPLE: ‘Moderate’ means interval from 101 to 140.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The volume of an incompressible fluid that will flow in unit time through a unit cube of a porous substance across which a unit pressure difference is maintained.

Description: The parameter represents the hydraulic conductivity of a rock container. Describes the ease with which water can move through pore spaces or fractures. It depends on the intrinsic permeability of the material and on the degree of saturation.NOTE: Because of their high porosity and permeability, sand and gravel have higher hydraulic conductivity than clay or unfractured granite aquifers.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The ability of an aquifer to store water.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The rock type with respect to the soluble rock components and their hydrogeochemical influence of groundwater.

Description: Defines the prevailing geochemical character of natural groundwater within the Aquifer.

Multiplicity: 1

Stereotypes: voidable

Valuetype: HydroGeochemicalRockTypeValue

Definition: The description of the HydrogeologicalUnit

Multiplicity: 1

Stereotypes: voidable

Valuetype: PT_FreeText

Definition: The approximate depth of the HydrogeologicalUnit occurrence.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The approximate thickness of the HydrogeologicalUnit.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: Date and time at which this version of the spatial object was inserted or changed in the spatial data set.

Multiplicity: 1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: Date and time at which this version of the spatial object was superseded or retired in the spatial data set.

Multiplicity: 0...1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: The type of geological the unit.

Description: Logical constraints of definition of unit and valid property cardinalities should be contained in the definition.

Multiplicity: 1

Valuetype: GeologicUnitTypeValue

Definition: External object identifier of the spatial object.

Multiplicity: 1

Valuetype: Identifier

Definition: The name of the geologic feature.

Description: EXAMPLE: a lithostratigraphic unit, mineral occurrence, or major fault. Not all GeologicFeatures will have names, for example minor faults.

Multiplicity: 1

Stereotypes: voidable

Valuetype: CharacterString


Associated objects - Optional

Definition: A configuration of matter in the Earth based on describable inhomogeneity, pattern, or fracture in an earth material.

Description: The identity of a GeologicStructure is independent of the material that is the substrate for the structure.

Multiplicity: 0..*

Name of the association: geologic Structure

Association definition: Relates one or many HydrogeologicalUnit(s) to a GeologicStructure.

INSPIRE Data Theme: Geology - [INSPIRE Data Theme Geology]

INSPIRE Application schema: Geology - [INSPIRE Application schema Geology]

Supertype of: Fold ShearDisplacementStructure

Subtype of: GeologicFeature


Attributes

Definition: External object identifier of the spatial object.

Multiplicity: 1

Valuetype: Identifier

Definition: The name of the geologic feature.

Description: EXAMPLE: a lithostratigraphic unit, mineral occurrence, or major fault. Not all GeologicFeatures will have names, for example minor faults.

Multiplicity: 1

Stereotypes: voidable

Valuetype: CharacterString

Definition: A saturated, but poorly permeable bed that impedes groundwater movement.

Description: It does not yield water freely to wells, but may transmit appreciable water to or from adjacent aquifers and, where sufficiently thick, may constitute an important ground-water storage unit. Aquitards are characterized by values of leakance that may range from relatively low to relatively high. A really extensive aquitard of relatively low leakance may function regionally as boundaries of aquifer flow systems.

Multiplicity: 0..*

Name of the association: aquitard

Association definition: The Aquitard(s) that separates the Aquifer.

INSPIRE Data Theme: Geology - [INSPIRE Data Theme Geology]

INSPIRE Application schema: Hydrogeology - [INSPIRE Application schema Hydrogeology]

Subtype of: HydrogeologicalUnit


Attributes

Definition: The volume of an incompressible fluid that will flow in unit time through a unit cube of a porous substance across which a unit pressure difference is maintained.

Description: The parameter represents the hydraulic conductivity of a rock container. Describes the ease with which water can move through pore spaces or fractures. It depends on the intrinsic permeability of the material and on the degree of saturation.NOTE: Because of their high porosity and permeability, sand and gravel have higher hydraulic conductivity than clay or unfractured granite aquifers.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The ability of an aquifer to store water.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The description of the HydrogeologicalUnit

Multiplicity: 1

Stereotypes: voidable

Valuetype: PT_FreeText

Definition: The approximate depth of the HydrogeologicalUnit occurrence.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The approximate thickness of the HydrogeologicalUnit.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: Date and time at which this version of the spatial object was inserted or changed in the spatial data set.

Multiplicity: 1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: Date and time at which this version of the spatial object was superseded or retired in the spatial data set.

Multiplicity: 0...1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: The type of geological the unit.

Description: Logical constraints of definition of unit and valid property cardinalities should be contained in the definition.

Multiplicity: 1

Valuetype: GeologicUnitTypeValue

Definition: External object identifier of the spatial object.

Multiplicity: 1

Valuetype: Identifier

Definition: The name of the geologic feature.

Description: EXAMPLE: a lithostratigraphic unit, mineral occurrence, or major fault. Not all GeologicFeatures will have names, for example minor faults.

Multiplicity: 1

Stereotypes: voidable

Valuetype: CharacterString

Definition: An abstract class for man-made facilities or natural features that have an interaction with the hydrogeological system.

Description: Hydrogeological objects may be natural (eg. spring) or the manmade (eg. wells). The vast majority of hydrogeological objects are manmade.

Multiplicity: 0..*

Name of the association: hydrogeological Object

Association definition: The HydrogeologicalObject(s) related to the aquifer.

INSPIRE Data Theme: Geology - [INSPIRE Data Theme Geology]

INSPIRE Application schema: Hydrogeology - [INSPIRE Application schema Hydrogeology]

Supertype of: HydrogeologicalObjectManMade HydrogeologicalObjectNatural


Attributes

Definition: External object identifier of the spatial object.

Description: NOTE An external object identifier is a unique object identifier published by the responsible body, which may be used by external applications to reference the spatial object. The identifier is an identifier of the spatial object, not an identifier of the real-world phenomenon.

Multiplicity: 0...1

Valuetype: Identifier

Definition: The geometry defining the spatial location of the HydrogeologicalObject.

Multiplicity: 1

Valuetype: GM_Primitive

Definition: The name or code of the HydrogeologicalObject.

Multiplicity: 1

Stereotypes: voidable

Valuetype: PT_FreeText

Definition: The description of the HydrogeologicalObject.

Multiplicity: 1

Stereotypes: voidable

Valuetype: PT_FreeText

Definition: Date and time at which this version of the spatial object was inserted or changed in the spatial data set.

Multiplicity: 1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: Date and time at which this version of the spatial object was superseded or retired in the spatial data set.

Multiplicity: 0...1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: 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.

Multiplicity: 0..1

Name of the association: aquifer System

Association definition: The specific AquiferSystem where the Aquitard occurs.

INSPIRE Data Theme: Geology - [INSPIRE Data Theme Geology]

INSPIRE Application schema: Hydrogeology - [INSPIRE Application schema Hydrogeology]

Subtype of: HydrogeologicalUnit


Attributes

Definition: Indicates if the AquiferSystem consists of more than one layer.

Multiplicity: 1

Stereotypes: voidable

Valuetype: Boolean

Definition: The description of the HydrogeologicalUnit

Multiplicity: 1

Stereotypes: voidable

Valuetype: PT_FreeText

Definition: The approximate depth of the HydrogeologicalUnit occurrence.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The approximate thickness of the HydrogeologicalUnit.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: Date and time at which this version of the spatial object was inserted or changed in the spatial data set.

Multiplicity: 1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: Date and time at which this version of the spatial object was superseded or retired in the spatial data set.

Multiplicity: 0...1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: The type of geological the unit.

Description: Logical constraints of definition of unit and valid property cardinalities should be contained in the definition.

Multiplicity: 1

Valuetype: GeologicUnitTypeValue

Definition: External object identifier of the spatial object.

Multiplicity: 1

Valuetype: Identifier

Definition: The name of the geologic feature.

Description: EXAMPLE: a lithostratigraphic unit, mineral occurrence, or major fault. Not all GeologicFeatures will have names, for example minor faults.

Multiplicity: 1

Stereotypes: voidable

Valuetype: CharacterString

Definition: A saturated, but poorly permeable bed that impedes groundwater movement.

Description: It does not yield water freely to wells, but may transmit appreciable water to or from adjacent aquifers and, where sufficiently thick, may constitute an important ground-water storage unit. Aquitards are characterized by values of leakance that may range from relatively low to relatively high. A really extensive aquitard of relatively low leakance may function regionally as boundaries of aquifer flow systems.

Multiplicity: 0..*

Name of the association: aquitard

Association definition: The Aquitard(s) contained within the AquiferSystem.

INSPIRE Data Theme: Geology - [INSPIRE Data Theme Geology]

INSPIRE Application schema: Hydrogeology - [INSPIRE Application schema Hydrogeology]

Subtype of: HydrogeologicalUnit


Attributes

Definition: The volume of an incompressible fluid that will flow in unit time through a unit cube of a porous substance across which a unit pressure difference is maintained.

Description: The parameter represents the hydraulic conductivity of a rock container. Describes the ease with which water can move through pore spaces or fractures. It depends on the intrinsic permeability of the material and on the degree of saturation.NOTE: Because of their high porosity and permeability, sand and gravel have higher hydraulic conductivity than clay or unfractured granite aquifers.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The ability of an aquifer to store water.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The description of the HydrogeologicalUnit

Multiplicity: 1

Stereotypes: voidable

Valuetype: PT_FreeText

Definition: The approximate depth of the HydrogeologicalUnit occurrence.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The approximate thickness of the HydrogeologicalUnit.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: Date and time at which this version of the spatial object was inserted or changed in the spatial data set.

Multiplicity: 1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: Date and time at which this version of the spatial object was superseded or retired in the spatial data set.

Multiplicity: 0...1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: The type of geological the unit.

Description: Logical constraints of definition of unit and valid property cardinalities should be contained in the definition.

Multiplicity: 1

Valuetype: GeologicUnitTypeValue

Definition: External object identifier of the spatial object.

Multiplicity: 1

Valuetype: Identifier

Definition: The name of the geologic feature.

Description: EXAMPLE: a lithostratigraphic unit, mineral occurrence, or major fault. Not all GeologicFeatures will have names, for example minor faults.

Multiplicity: 1

Stereotypes: voidable

Valuetype: CharacterString


Associated objects - Optional

Definition: A configuration of matter in the Earth based on describable inhomogeneity, pattern, or fracture in an earth material.

Description: The identity of a GeologicStructure is independent of the material that is the substrate for the structure.

Multiplicity: 0..*

Name of the association: geologic Structure

Association definition: Relates one or many HydrogeologicalUnit(s) to a GeologicStructure.

INSPIRE Data Theme: Geology - [INSPIRE Data Theme Geology]

INSPIRE Application schema: Geology - [INSPIRE Application schema Geology]

Supertype of: Fold ShearDisplacementStructure

Subtype of: GeologicFeature


Attributes

Definition: External object identifier of the spatial object.

Multiplicity: 1

Valuetype: Identifier

Definition: The name of the geologic feature.

Description: EXAMPLE: a lithostratigraphic unit, mineral occurrence, or major fault. Not all GeologicFeatures will have names, for example minor faults.

Multiplicity: 1

Stereotypes: voidable

Valuetype: CharacterString

Definition: A wet underground layer of water-bearing permeable rock or unconsolidated materials (gravel, sand, silt, or clay) from which groundwater can be usefully extracted using a water well.

Description: An underground geological formation able to store and yield water.

Multiplicity: 0..*

Name of the association: aquifer

Association definition: The Aquifers separated by the Aquitard.

INSPIRE Data Theme: Geology - [INSPIRE Data Theme Geology]

INSPIRE Application schema: Hydrogeology - [INSPIRE Application schema Hydrogeology]

Subtype of: HydrogeologicalUnit


Attributes

Definition: The type of aquifer.

Description: Water in an Aquifer is, or is not, under pressure. Based on that unconfined, confined, artesian, or subartesian types are distinguished.

Multiplicity: 1

Valuetype: AquiferTypeValue

Definition: The classification of the medium in which the groundwater flow occurs.

Multiplicity: 1

Valuetype: AquiferMediaTypeValue

Definition: Indicates if groundwater from aquifer is exploited by wells or intakes

Multiplicity: 1

Stereotypes: voidable

Valuetype: Boolean

Definition: Indicates if aquifer is the main useful aquifer in the aquifer system

Multiplicity: 1

Stereotypes: voidable

Valuetype: Boolean

Definition: An index value or interval of values determining the potential degree of aquifer risk arising from the geological structure, hydrogeological conditions and the existence of real or potential source of contamination.

Description: A single value should be used if it is determined directly from the DRASTIC method. If attribute data comes from another data source which is expressed by categorized items, for example: low, moderate or high, interval should be used expressed by lowest and highest value of category. EXAMPLE: ‘Moderate’ means interval from 101 to 140.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The volume of an incompressible fluid that will flow in unit time through a unit cube of a porous substance across which a unit pressure difference is maintained.

Description: The parameter represents the hydraulic conductivity of a rock container. Describes the ease with which water can move through pore spaces or fractures. It depends on the intrinsic permeability of the material and on the degree of saturation.NOTE: Because of their high porosity and permeability, sand and gravel have higher hydraulic conductivity than clay or unfractured granite aquifers.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The ability of an aquifer to store water.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The rock type with respect to the soluble rock components and their hydrogeochemical influence of groundwater.

Description: Defines the prevailing geochemical character of natural groundwater within the Aquifer.

Multiplicity: 1

Stereotypes: voidable

Valuetype: HydroGeochemicalRockTypeValue

Definition: The description of the HydrogeologicalUnit

Multiplicity: 1

Stereotypes: voidable

Valuetype: PT_FreeText

Definition: The approximate depth of the HydrogeologicalUnit occurrence.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The approximate thickness of the HydrogeologicalUnit.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: Date and time at which this version of the spatial object was inserted or changed in the spatial data set.

Multiplicity: 1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: Date and time at which this version of the spatial object was superseded or retired in the spatial data set.

Multiplicity: 0...1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: The type of geological the unit.

Description: Logical constraints of definition of unit and valid property cardinalities should be contained in the definition.

Multiplicity: 1

Valuetype: GeologicUnitTypeValue

Definition: External object identifier of the spatial object.

Multiplicity: 1

Valuetype: Identifier

Definition: The name of the geologic feature.

Description: EXAMPLE: a lithostratigraphic unit, mineral occurrence, or major fault. Not all GeologicFeatures will have names, for example minor faults.

Multiplicity: 1

Stereotypes: voidable

Valuetype: CharacterString

Definition: 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.

Multiplicity: 0..1

Name of the association: aquifer System

Association definition: The AquiferSystem of which the Aquitard is a part.

INSPIRE Data Theme: Geology - [INSPIRE Data Theme Geology]

INSPIRE Application schema: Hydrogeology - [INSPIRE Application schema Hydrogeology]

Subtype of: HydrogeologicalUnit


Attributes

Definition: Indicates if the AquiferSystem consists of more than one layer.

Multiplicity: 1

Stereotypes: voidable

Valuetype: Boolean

Definition: The description of the HydrogeologicalUnit

Multiplicity: 1

Stereotypes: voidable

Valuetype: PT_FreeText

Definition: The approximate depth of the HydrogeologicalUnit occurrence.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The approximate thickness of the HydrogeologicalUnit.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: Date and time at which this version of the spatial object was inserted or changed in the spatial data set.

Multiplicity: 1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: Date and time at which this version of the spatial object was superseded or retired in the spatial data set.

Multiplicity: 0...1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: The type of geological the unit.

Description: Logical constraints of definition of unit and valid property cardinalities should be contained in the definition.

Multiplicity: 1

Valuetype: GeologicUnitTypeValue

Definition: External object identifier of the spatial object.

Multiplicity: 1

Valuetype: Identifier

Definition: The name of the geologic feature.

Description: EXAMPLE: a lithostratigraphic unit, mineral occurrence, or major fault. Not all GeologicFeatures will have names, for example minor faults.

Multiplicity: 1

Stereotypes: voidable

Valuetype: CharacterString


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