Textual Amendments
The package Hydrogeology contains the following spatial object types:
Active Well
Aquiclude
Aquifer
Aquifer System
Aquitard
Groundwater Body
Hydrogeological Object
Man-made Hydrogeological Object
Natural Hydrogeological Object
Hydrogeological Unit
A well influencing the groundwater resources of the aquifer.
This type is a sub-type of HydrogeologicalObjectManMade.
| Attribute | Definition | Type | Voidability |
|---|---|---|---|
| activityType | The type of activity carried out by the well. | ActiveWellTypeValue |
| Association role | Definition | Type | Voidability |
|---|---|---|---|
| groundWaterBody | The GroundWaterBody from which the ActiveWell extracts groundwater resources. | GroundWaterBody | voidable |
| environmentalMonitoringFacility | The related EnvironmentalMonitoringFacility. | EnvironmentalMonitoringFacility | voidable |
| borehole | The Borehole upon which the ActiveWell is based. | Borehole | voidable |
An impermeable body of rock or stratum of sediment that acts as a barrier to the flow of groundwater.
This type is a sub-type of HydrogeologicalUnit.
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.
This type is a sub-type of HydrogeologicalUnit.
| Attribute | Definition | Type | Voidability |
|---|---|---|---|
| aquiferType | The type of aquifer. | AquiferTypeValue | |
| mediaType | The classification of the medium in which the groundwater flow occurs. | AquiferMediaTypeValue | |
| isExploited | Indicates if groundwater from aquifer is exploited by wells or intakes. | Boolean | voidable |
| isMainInSystem | Indicates if aquifer is the main useful aquifer in the aquifer system. | Boolean | voidable |
| vulnerabilityToPollution | 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. | QuantityValue | voidable |
| permeabilityCoefficient | 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. | QuantityValue | voidable |
| storativityCoefficient | The ability of an aquifer to store water. | QuantityValue | voidable |
| hydroGeochemicalRockType | The rock type with respect to the soluble rock components and their hydrogeochemical influence on groundwater. | HydroGeochemicalRockTypeValue | voidable |
| Association role | Definition | Type | Voidability |
|---|---|---|---|
| aquitard | The Aquitard(s) that separates the Aquifer. | Aquitard | voidable |
| hydrogeologicalObject | The HydrogeologicalObject(s) related to the aquifer. | HydrogeologicalObject | voidable |
| aquiferSystem | The specific AquiferSystem where the Aquitard occurs. | AquiferSystem | voidable |
A collection of aquifers and aquitards, which together constitute the environment of groundwater - ‘ communicating vessels ’ , that are filled or can be filled with water.
This type is a sub-type of HydrogeologicalUnit.
| Attribute | Definition | Type | Voidability |
|---|---|---|---|
| isLayered | Indicates if the AquiferSystem consists of more than one layer. | Boolean | voidable |
| Association role | Definition | Type | Voidability |
|---|---|---|---|
| aquitard | The Aquitard(s) contained within the AquiferSystem. | Aquitard | voidable |
| aquiclude | An Aquiclude enclosing the AquiferSystem. | Aquiclude | voidable |
| aquifer | The Aquifer(s) contained in the AquiferSystem. | Aquifer | voidable |
A saturated, but poorly permeable bed that impedes groundwater movement.
This type is a sub-type of HydrogeologicalUnit.
| Attribute | Definition | Type | Voidability |
|---|---|---|---|
| approximatePermeabilityCoefficient | 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. | QuantityValue | voidable |
| approximateStorativityCoefficient | The ability of an aquifer to store water. | QuantityValue | voidable |
| Association role | Definition | Type | Voidability |
|---|---|---|---|
| aquiferSystem | The AquiferSystem of which the Aquitard is a part. | AquiferSystem | voidable |
| aquifer | The Aquifers separated by the Aquitard. | Aquifer | voidable |
A distinct volume of groundwater within an aquifer or system of aquifers, which is hydraulically isolated from nearby groundwater bodies.
| Attribute | Definition | Type | Voidability |
|---|---|---|---|
| inspireId | External object identifier of the spatial object. | Identifier | |
| approximateHorizontalExtend | The geometry defining the boundary of the GroundWaterBody. | GM_Surface | voidable |
| conditionOfGroundWaterBody | The approximate degree of change to groundwater as a result of human activity. | ConditionOfGroundwaterValue | |
| mineralization | One of the main chemical characteristics of water. A value is a sum of all water chemical concentration components. | WaterSalinityValue | voidable |
| piezometricState | Specifies the piezometric state of the GroundwaterBody water table. | PiezometricState | voidable |
| beginLifespanVersion | Date and time at which this version of the spatial object was inserted or changed in the spatial data set. | DateTime | voidable |
| endLifespanVersion | Date and time at which this version of the spatial object was superseded or retired in the spatial data set. | DateTime | voidable |
| Association role | Definition | Type | Voidability |
|---|---|---|---|
| activeWell | The ActiveWell which changes the state of the GroundwaterBody through the extraction of groundwater resources. | ActiveWell | voidable |
| aquiferSystem | The AquiferSystem which includes the GroundWaterBody. | AquiferSystem | voidable |
| hydrogeologicalObjectNatural | A HydrogeologicalObjectNatural interacting with the GroundwaterBody. | HydrogeologicalObjectNatural | voidable |
| observationWell | The observation wells which monitor the GroundWaterBody | EnvironmentalMonitoringFacility | voidable |
An abstract class for man-made facilities or natural features that have an interaction with the hydrogeological system.
This type is abstract.
| Attribute | Definition | Type | Voidability |
|---|---|---|---|
| inspireId | External object identifier of the spatial object. | Identifier | |
| geometry | The geometry defining the spatial location of the HydrogeologicalObject. | GM_Primitive | |
| name | The name or code of the HydrogeologicalObject. | PT_FreeText | voidable |
| description | The description of the HydrogeologicalObject. | PT_FreeText | voidable |
| beginLifespanVersion | Date and time at which this version of the spatial object was inserted or changed in the spatial data set. | DateTime | voidable |
| endLifespanVersion | Date and time at which this version of the spatial object was superseded or retired in the spatial data set. | DateTime | voidable |
| Association role | Definition | Type | Voidability |
|---|---|---|---|
| aquifer | The Aquifer within which the HydrogeologicalObject occurs. | Aquifer | voidable |
A man-made hydrogeological object.
This type is a sub-type of HydrogeologicalObject.
This type is abstract.
| Attribute | Definition | Type | Voidability |
|---|---|---|---|
| validFrom | Official date and time the hydrogeological object was/will be legally established. | DateTime | voidable |
| validTo | Date and time at which the hydrogeological object legally ceased/will cease to be used. | DateTime | voidable |
| statusCode | A code defining the formal status of a man-made hydrogeological object. | StatusCodeTypeValue | voidable |
Hydrogeological object which was created by natural processes.
This type is a sub-type of HydrogeologicalObject.
| Attribute | Definition | Type | Voidability |
|---|---|---|---|
| naturalObjectType | The type of natural hydrogeological object. | NaturalObjectTypeValue | |
| waterPersistence | The degree of persistence of water flow. | WaterPersistenceValue | voidable |
| approximateQuantityOfFlow | An approximate value defining the water yield in a natural hydrogeological object. | QuantityValue | voidable |
| Association role | Definition | Type | Voidability |
|---|---|---|---|
| groundWaterBody | The GroundWateBody with which the natural hydrogeological object interacts. | GroundWaterBody | voidable |
A part of the lithosphere with distinctive parameters for water storage and conduction.
This type is a sub-type of GeologicUnit.
| Attribute | Definition | Type | Voidability |
|---|---|---|---|
| description | The description of the HydrogeologicalUnit. | PT_FreeText | voidable |
| approximateDepth | The approximate depth of the HydrogeologicalUnit occurrence. | QuantityValue | voidable |
| approximateThickness | The approximate thickness of the HydrogeologicalUnit. | QuantityValue | voidable |
| beginLifespanVersion | Date and time at which this version of the spatial object was inserted or changed in the spatial data set. | DateTime | voidable |
| endLifespanVersion | Date and time at which this version of the spatial object was superseded or retired in the spatial data set. | DateTime | voidable |
| Association role | Definition | Type | Voidability |
|---|---|---|---|
| geologicStructure | Relates one or many HydrogeologicalUnit(s) to a GeologicStructure. | GeologicStructure | voidable |
A surface that represents the interpolated groundwater table or other surface, for a local or regional area.
This type is a union type.
| Attribute | Definition | Type | Voidability |
|---|---|---|---|
| surfaceRectifiedGrid | A surface whose domain is a rectified grid. | RectifiedGridCoverage | |
| surfaceReferenceableGrid | Surface whose domain consists of a referenceable grid. | ReferenceableGridCoverage | |
| surfacePointCollection | Hydrogeological surface represented by collection of observations in points. | PointObservationCollection |
The piezometric state of a GroundWaterBody
| Attribute | Definition | Type | Voidability |
|---|---|---|---|
| observationTime | Date and time of groundwater state observation. | DateTime | |
| piezometricSurface | A surface that represents the level to which water will rise in tightly cased wells. | HydrogeologicalSurface |
A data container with a single quantity value or a range of quantity values.
This type is a union type.
| Attribute | Definition | Type | Voidability |
|---|---|---|---|
| singleQuantity | Scalar component with decimal representation and a unit of measure used to store value of a continuous quantity. | Quantity | |
| quantityInterval | Decimal pair for specifying a quantity range with a unit of measure. | QuantityRange |
Types of active wells.
The allowed values for this code list comprise the values specified in the table below and additional values at any level defined by data providers.
| Value | Name | Definition |
|---|---|---|
| exploitation | exploitation | The extraction of groundwater from an aquifer for various purposes (domestic, industrial, water supply intake and other) |
| recharge | recharge | (a) Aquifer Recharge Wells: Used to recharge depleted aquifers by injecting water from a variety of sources such as lakes, streams, domestic wastewater treatment plants, other aquifers, etc. (b) Saline Water Intrusion Barrier Wells: Used to inject water into fresh water aquifers to prevent intrusion of salt water into fresh water aquifers. (c) Subsidence Control Wells: Used to inject fluids into a non-oil or gas-producing zone to reduce or eliminate subsidence associated with overdraft of fresh water. |
| dewatering | dewatering | The removal of water from solid material or soil from an aquifer for the purpose of lowering the water table, e.g. during the site development phase of a major construction project due to a high water table. Usually involves the use of ‘ dewatering ’ pumps. |
| decontamination | decontamination | Well used in remediation schemes that reduce the pollution in an aquifer. |
| disposal | disposal | A well, often a depleted oil or gas well, into which waste fluids can be injected for disposal. Disposal wells typically are subject to regulatory requirements to avoid the contamination of freshwater aquifers. |
| waterExploratory | water exploratory | A well drilled to search for new groundwater. |
| thermal | thermal | A well used to extract thermal supply water for various thermal purposes (e.g. balneology). |
| observation | observation | A well used for observation purposes. |
Values describing the characteristics of the aquifer medium.
The allowed values for this code list comprise the values specified in the table below and additional values at any level defined by data providers.
| Value | Name | Definition |
|---|---|---|
| fractured | fractured | Fractured aquifers are rocks in which the groundwater moves through cracks, joints or fractures in otherwise solid rock |
| porous | porous | Porous media are those aquifers consisting of aggregates of individual particles such as sand or gravel. and the groundwater flow occurs in and moves through the openings between the individual grains. |
| karstic | karstic | Karstic aquifers are fractured aquifers where the cracks and fractures have been enlarged by solution, forming large channels or even caverns. |
| compound | compound | A combination of a porous, karstic and/or fractured aquifer |
| karsticAndFractured | karstic and fractured | A combination of both karstic and fractured aquifer |
| porousAndFractured | porous and fractured | A combination of both porous and fractured aquifer |
Types of aquifers.
The allowed values for this code list comprise only the values specified in the table below.
| Value | Name | Definition |
|---|---|---|
| confinedSubArtesian | confined subartesian | An aquifer containing water between two relatively impermeable boundaries. The water level in a well tapping a confined aquifer stands above the top of the confined aquifer and can be higher or lower than the water table that may be present in the material above it. The water level does not rise above the ground surface. |
| confinedArtesian | confined artesian | An aquifer containing water between two relatively impermeable boundaries. The water level in a well tapping a confined aquifer stands above the top of the confined aquifer and can be higher or lower than the water table that may be present in the material above. The water level rises above the ground surface, yielding a flowing well. |
| unconfined | unconfined | An aquifer containing water that is not under pressure. The water level in a well is the same as the water table outside the well. |
Values indicating the approximate degree of change which has taken place on the natural state of groundwater.
The allowed values for this code list comprise only the values specified in the table below.
| Value | Name | Definition |
|---|---|---|
| natural | natural | Groundwater quantity or quality is dependent only on natural factors. |
| lightlyModified | lightly modified | Groundwater quantity or quality is dependent mostly on natural factors, but with some influence through human activity |
| modified | modified | Groundwater quantity or quality is modified by human activity. |
| stronglyModified | strongly modified | Groundwater quantity or quality is modified by human activity and the values of a number of parameters exceed the drinking water standards. |
| unknown | unknown | The natural state of groundwater condition is unknown. |
Values describing the hydrogeochemical condition of the groundwater environment.
The allowed values for this code list comprise the values specified in the table below and additional values at any level defined by data providers.
| Value | Name | Definition |
|---|---|---|
| silicatic | silicatic | Silicatic hydrochemical type of groundwater. |
| carbonatic | carbonatic | Carbonatic hydrochemical type of groundwater. |
| sulfatic | sulfatic | Sulfatic hydrochemical type of groundwater. |
| chloridic | chloridic | Chloridic hydrochemical type of groundwater. |
| organic | organic | Organic hydrochemical type of groundwater. |
Types of natural hydrogeological objects.
The allowed values for this code list comprise the values specified in the table below and additional values at any level defined by data providers.
| Value | Name | Definition |
|---|---|---|
| spring | spring | Any natural situation where groundwater flows to the surface of the earth. Thus, a spring is a site where the aquifer surface meets the ground surface. |
| seep | seep | A moist or wet place where groundwater reaches the earth's surface from an underground aquifer. |
| swallowHole | swallow hole | A natural depression or hole in the Earth's surface, also known as a sink, shake hole, sinkhole, swallow hole, swallet, doline or cenote, it is mostly caused by karst processes – the chemical dissolution of carbonate rocks or suffusion processes for example in sandstone. |
| fen | fen | Low land that is covered wholly or partly with water and that usually has peaty alkaline soil and characteristic flora (as of sedges and reeds). |
| notSpecified | not specified | Unspecified places where groundwater meets the surface. |
Values describing the statuses of man-made hydrogeological objects.
The allowed values for this code list comprise the values specified in the table below and additional values at any level defined by data providers.
| Value | Name | Definition |
|---|---|---|
| abandonedDry | abandoned, dry | Abandoned because of lack of water. |
| abandonedInsufficient | abandoned, insufficient water | Abandoned because of insufficient amount of water. |
| abandonedQuality | abandoned, poor water quality | Abandoned because of water quality reasons. |
| deepened | deepened | Depth of boring increased. |
| new | new | Borehole constructed on a site not previously used. |
| notInUse | not in use | No longer used for any purpose. |
| reconditioned | reconditioned | Well that has been subject to remedial works to improve its functioning. |
| standby | standby | Abstraction used only when others are not available. |
| unfinished | unfinished | Boring or construction not completed. |
| unknown | unknown | Status not known or defined. |
Types of hydrological persistence of water.
The allowed values for this code list comprise the values specified in the table below and additional values at any level defined by data providers.
| Value | Name | Definition |
|---|---|---|
| intermittent | intermittent | Filled and/or flowing for part of the year. |
| seasonal | seasonal | Filled and/or flowing for particular seasons of the year, e.g. autumn/winter. |
| perennial | perennial | Filled and/or flowing continuously throughout the year as its bed lies below the water table. |
| notSpecified | not specified | The type of hydrological persistence of water not specified. |
| ephemeral | ephemeral | Filled and/or flowing during and immediately after precipitation. |
A code list indicating salinity classes in water.
The allowed values for this code list comprise the values specified in the table below and additional values at any level defined by data providers.
| Value | Name | Definition |
|---|---|---|
| ultraFreshWater | ultra fresh water | Water with very low salinity. The salinity is equivalent or nearly equivalent to that of rainwater. |
| freshWater | fresh water | Freshwater refers to bodies of water such as ponds, lakes, rivers and streams containing low concentrations of dissolved salts. |
| brackishWater | brackish water | Brackish water is water that has more salinity than fresh water, but not as much as seawater. It may result from mixing of seawater with fresh water, as in estuaries, or it may occur in brackish fossil aquifers. |
| salineWater | saline water | Saline water is water that contains a significant concentration of dissolved salts. Seawater has a salinity of roughly 35 000 ppm, equivalent to 35 g/L. |
| brineWater | brine water | Brine water is saturated or nearly saturated with salt.] |