Hydrologic Formation in ESG data model

Base entity from which all Industry Data Model entities are derived.

Traits

Traits for this entity are listed here.

is.CDM.entityVersion

Parameter	Value	Data type	Explanation
versionNumber	"4.3"	string	semantic version number of the entity

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Base entity from which all Industry Data Model entities are derived. en A body of water.	entity	a reference to the constant entity holding the list of localized text

is.identifiedBy
Names a specific identity attribute to use with an entity.

Parameter	Value	Data type	Explanation
attribute	HydrologicFormation/(resolvedAttributes)/HydrologicFormationId	attribute

minimumObjectModelVersion
Minimum version of the object model required to fully understand the data schema used.

Parameter	Value	Data type	Explanation
versionNumber	"1.2.3"	string

is.IDM.modelVersion
Semantic version number of the IDM.

Parameter	Value	Data type	Explanation
versionNumber	"1.6.0"	string

has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{BB7D8E3C-E9D2-49CE-ACEE-BB8369CA48C6}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nativeTo.businessArea
The name of the business area from which the entity originates.

Parameter	Value	Data type	Explanation
name	"Water Management"	string

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Hydrologic Formation	entity	a reference to the constant entity holding the list of localized text

has.entitySchemaAbstractionLevel
A level of abstraction assigned to an Entity schema. Logical schema descriptions use complex dataTypes, inheritance, and entities as attributes. Resolved descriptions contain none of those things, only final trait and attribute sets are shown. A composition schema manipulates, guides or restates parts of logical schemas to produce one resolved schema.

Parameter	Value	Data type	Explanation
level	"resolved"	string	Possible values: logical, composition, resolved

Attributes

Name	Description	First Included in Instance
HydrologicFormationId	The unique identifier of a Hydrologic Formation.	HydrologicFormation
HydrologicFormationName	The name of a hydrologic formation.	HydrologicFormation
HydrologicFormationDescription	The description of a hydrologic formation.	HydrologicFormation
HydrologicFormationMaximumLevelMeters	The maximum level of a hydrologic formation under its established normal operating range expressed in meters.	HydrologicFormation
HydrologicFormationGrossCapacityUnits	The total amount of storage capacity available in a reservoir for all purposes from the streambed to the normal maximum operating level. It does not include surcharge, but does include dead storage.	HydrologicFormation
HydrologicFormationGrossCapacityUnitsUomId	The unique identifier of a Unit Of Measure.	HydrologicFormation
DepthFromHighWaterMark	The depth of the water measured as the distance from the high water mark to the varying water surface level.	HydrologicFormation
LowWaterMark	The lowest level attained by a varying water surface level.	HydrologicFormation
HighWaterMarkHwm	A mark indicating the highest level reached by a body of water	HydrologicFormation
WaterMeasurementUomId	The unique identifier of a Unit Of Measure.	HydrologicFormation
UsgsIdentifier	The USGS identifier for identifying a hydrologic formation. **Example:**The USGS identifies wells and miscellaneous site-numbering system is based on the grid system of latitude and longitude. The system provides the geographic location of the well or miscellaneous site and a unique number for each site. The number consists of 15 digits. The first 6 digits denote the degrees, minutes, and seconds of latitude, and the next 7 digits denote degrees, minutes, and seconds of longitude; the last 2 digits are a sequential number for wells within a 1-second grid. In the event that the latitude-longitude coordinates for a well and miscellaneous site are the same, a sequential number such as "01," "02," and so forth, would be assigned as one would for wells (see fig. 1).	HydrologicFormation
MinimumAltitudeUnits	The minimum vertical distance of a hydrologic formation measured from Mean Sea Level (MSL).	HydrologicFormation
MaximumAltitudeUnits	The maximum vertical distance of a hydrologic formation measured from Mean Sea Level (MSL)	HydrologicFormation
AltitudeUomId	The unique identifier of a Unit Of Measure.	HydrologicFormation
MaximumProbableFloodHeight	The maximum probably height of hydrologic formation during flood.	HydrologicFormation
FloodPeakDischargeUnits	The peak flood discharge units during flood.	HydrologicFormation
FloodOfRecordHeight	The maximum height at flood.	HydrologicFormation
FloodOfRecordDischargeUnits	The maximum discharge at flood.	HydrologicFormation
NaturalHydrologicFormationIndicator	Indicates that the hydrologic formation is a natural formation.	HydrologicFormation
ArtificialHydrologicFormationIndicator	Indicates that the hydrologic formation is an artificial formation.	HydrologicFormation
GeographicAreaId	The unique identifier of a Geographic Area.	HydrologicFormation
LocationId	The unique identifier of a Location.	HydrologicFormation
FacilityId	The unique identifier of a Facility.	HydrologicFormation
LandCapabilityClassificationId	The unique identifier of a Land Capability Classification.	HydrologicFormation
FederallyOwnedLandTypeId	The unique identifier of a Federally Owned Land Type.	HydrologicFormation
FloodZoneTypeId	The unique identifier of a Flood Zone Type.	HydrologicFormation
HydrologicFormationTypeId	The unique identifier of a hydrologic formation type.	HydrologicFormation
HydrologicFormationNote	A note, comment or additional information regarding the hydrologic formation.	HydrologicFormation

HydrologicFormationId

The unique identifier of a Hydrologic Formation.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Hydrologic Formation ID
description	The unique identifier of a Hydrologic Formation.
isPrimaryKey	true
dataFormat	int64

Traits

List of traits for the HydrologicFormationId attribute are listed here.

is.dataFormat.integer
is.dataFormat.big
Indicates an atomic but multi-unit version of a fundamental type such as a multi byte encoded character, a double precision float, a long integer.

is.identifiedBy
Names a specific identity attribute to use with an entity.

Parameter	Value	Data type	Explanation
attribute	HydrologicFormation/(resolvedAttributes)/HydrologicFormationId	attribute

has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{E7D472C9-FBAF-438D-B767-1F0D64AAC2C4}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Hydrologic Formation ID	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The unique identifier of a Hydrologic Formation.	entity	a reference to the constant entity holding the list of localized text

is.dataFormat.integer
is.dataFormat.big
Indicates an atomic but multi-unit version of a fundamental type such as a multi byte encoded character, a double precision float, a long integer.

HydrologicFormationName

The name of a hydrologic formation.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Hydrologic Formation Name
description	The name of a hydrologic formation.
dataFormat	string
maximumLength	256
isNullable	true

Traits

List of traits for the HydrologicFormationName attribute are listed here.

is.dataFormat.character
is.dataFormat.big
Indicates an atomic but multi-unit version of a fundamental type such as a multi byte encoded character, a double precision float, a long integer.

is.dataFormat.array
Indicates a contiguous sequence of fundamental units that should be taken as a whole and considered one value. Array of Character is a String. Array of Byte is a Binary Object.

has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{D5E37874-0488-4A5E-8964-FE6C5851ADC6}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Hydrologic Formation Name	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The name of a hydrologic formation.	entity	a reference to the constant entity holding the list of localized text

is.constrained
Maximum length or value constraints.

Parameter	Value	Data type	Explanation
maximumLength	"256"	integer

is.dataFormat.character
is.dataFormat.array
Indicates a contiguous sequence of fundamental units that should be taken as a whole and considered one value. Array of Character is a String. Array of Byte is a Binary Object.

HydrologicFormationDescription

The description of a hydrologic formation.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Hydrologic Formation Description
description	The description of a hydrologic formation.
dataFormat	string
maximumLength	2048
isNullable	true

Traits

List of traits for the HydrologicFormationDescription attribute are listed here.

is.dataFormat.character
is.dataFormat.big
Indicates an atomic but multi-unit version of a fundamental type such as a multi byte encoded character, a double precision float, a long integer.

is.dataFormat.array
Indicates a contiguous sequence of fundamental units that should be taken as a whole and considered one value. Array of Character is a String. Array of Byte is a Binary Object.

has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{B432EC80-9DF4-4672-8661-18FA661E3646}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Hydrologic Formation Description	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The description of a hydrologic formation.	entity	a reference to the constant entity holding the list of localized text

is.constrained
Maximum length or value constraints.

Parameter	Value	Data type	Explanation
maximumLength	"2048"	integer

is.dataFormat.character
is.dataFormat.array
Indicates a contiguous sequence of fundamental units that should be taken as a whole and considered one value. Array of Character is a String. Array of Byte is a Binary Object.

HydrologicFormationMaximumLevelMeters

The maximum level of a hydrologic formation under its established normal operating range expressed in meters.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Hydrologic Formation Maximum Level meters
description	The maximum level of a hydrologic formation under its established normal operating range expressed in meters.
dataFormat	decimal
isNullable	true

Traits

List of traits for the HydrologicFormationMaximumLevelMeters attribute are listed here.

is.dataFormat.numeric.shaped
for setting the exact precision and scale of numeric values

Parameter	Value	Data type	Explanation
precision	"18"	integer	the total number of significant digits
scale	"2"	integer	the number of digits to the right of the decimal place

has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{7363372B-791C-4633-9370-E177543849CB}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Hydrologic Formation Maximum Level meters	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The maximum level of a hydrologic formation under its established normal operating range expressed in meters.	entity	a reference to the constant entity holding the list of localized text

is.dataFormat.numeric.shaped
for setting the exact precision and scale of numeric values

HydrologicFormationGrossCapacityUnits

The total amount of storage capacity available in a reservoir for all purposes from the streambed to the normal maximum operating level. It does not include surcharge, but does include dead storage.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Hydrologic Formation Gross Capacity Units
description	The total amount of storage capacity available in a reservoir for all purposes from the streambed to the normal maximum operating level. It does not include surcharge, but does include dead storage.
dataFormat	int32
isNullable	true

Traits

List of traits for the HydrologicFormationGrossCapacityUnits attribute are listed here.

is.dataFormat.integer
has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{0AF678AA-EEFA-49F3-B0E0-D6001FED0736}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Hydrologic Formation Gross Capacity Units	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The total amount of storage capacity available in a reservoir for all purposes from the streambed to the normal maximum operating level. It does not include surcharge, but does include dead storage.	entity	a reference to the constant entity holding the list of localized text

is.dataFormat.integer

HydrologicFormationGrossCapacityUnitsUomId

The unique identifier of a Unit Of Measure.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Hydrologic Formation Gross Capacity Units UOM ID
description	The unique identifier of a Unit Of Measure.
dataFormat	int32
isNullable	true

Traits

List of traits for the HydrologicFormationGrossCapacityUnitsUomId attribute are listed here.

is.dataFormat.integer
is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Hydrologic Formation Gross Capacity Units UOM ID	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The unique identifier of a Unit Of Measure.	entity	a reference to the constant entity holding the list of localized text

is.linkedEntity.identifier
Marks the attribute(s) that hold foreign key references to a linked (used as an attribute) entity. This attribute is added to the resolved entity to enumerate the referenced entities.

Parameter	Value	Data type	Explanation
entityReferences	entityReference attributeReference UnitOfMeasure.cdm.json/UnitOfMeasure UnitOfMeasureId	entity	a reference to the constant entity holding the list of entity references

has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{DA1C7910-4177-4B50-8635-F194C790B4F5}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.dataFormat.integer

DepthFromHighWaterMark

The depth of the water measured as the distance from the high water mark to the varying water surface level.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Depth From High Water Mark
description	The depth of the water measured as the distance from the high water mark to the varying water surface level.
dataFormat	decimal
isNullable	true

Traits

List of traits for the DepthFromHighWaterMark attribute are listed here.

is.dataFormat.numeric.shaped
for setting the exact precision and scale of numeric values

Parameter	Value	Data type	Explanation
precision	"18"	integer	the total number of significant digits
scale	"2"	integer	the number of digits to the right of the decimal place

has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{8CE4A108-D762-4CA8-A49A-A5D32C67EFAE}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Depth From High Water Mark	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The depth of the water measured as the distance from the high water mark to the varying water surface level.	entity	a reference to the constant entity holding the list of localized text

is.dataFormat.numeric.shaped
for setting the exact precision and scale of numeric values

LowWaterMark

The lowest level attained by a varying water surface level.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Low Water Mark
description	The lowest level attained by a varying water surface level.
dataFormat	decimal
isNullable	true

Traits

List of traits for the LowWaterMark attribute are listed here.

is.dataFormat.numeric.shaped
for setting the exact precision and scale of numeric values

Parameter	Value	Data type	Explanation
precision	"18"	integer	the total number of significant digits
scale	"2"	integer	the number of digits to the right of the decimal place

has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{32BBB6B5-56E2-4535-8B88-C54301777BBA}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Low Water Mark	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The lowest level attained by a varying water surface level.	entity	a reference to the constant entity holding the list of localized text

is.dataFormat.numeric.shaped
for setting the exact precision and scale of numeric values

HighWaterMarkHwm

A mark indicating the highest level reached by a body of water
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	High Water Mark HWM
description	A mark indicating the highest level reached by a body of water
dataFormat	decimal
isNullable	true

Traits

List of traits for the HighWaterMarkHwm attribute are listed here.

is.dataFormat.numeric.shaped
for setting the exact precision and scale of numeric values

Parameter	Value	Data type	Explanation
precision	"18"	integer	the total number of significant digits
scale	"2"	integer	the number of digits to the right of the decimal place

has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{67A5AFF6-1906-4DA5-912F-69E09EC251D0}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en High Water Mark HWM	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en A mark indicating the highest level reached by a body of water	entity	a reference to the constant entity holding the list of localized text

is.dataFormat.numeric.shaped
for setting the exact precision and scale of numeric values

WaterMeasurementUomId

The unique identifier of a Unit Of Measure.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Water Measurement UOM ID
description	The unique identifier of a Unit Of Measure.
dataFormat	int32
isNullable	true

Traits

List of traits for the WaterMeasurementUomId attribute are listed here.

is.dataFormat.integer
is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Water Measurement UOM ID	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The unique identifier of a Unit Of Measure.	entity	a reference to the constant entity holding the list of localized text

is.linkedEntity.identifier
Marks the attribute(s) that hold foreign key references to a linked (used as an attribute) entity. This attribute is added to the resolved entity to enumerate the referenced entities.

Parameter	Value	Data type	Explanation
entityReferences	entityReference attributeReference UnitOfMeasure.cdm.json/UnitOfMeasure UnitOfMeasureId	entity	a reference to the constant entity holding the list of entity references

has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{39CB22FB-ECDF-4900-8480-D3F3D47DD458}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.dataFormat.integer

UsgsIdentifier

The USGS identifier for identifying a hydrologic formation.

Example: The USGS identifies wells and miscellaneous site-numbering system is based on the grid system of latitude and longitude. The system provides the geographic location of the well or miscellaneous site and a unique number for each site. The number consists of 15 digits. The first 6 digits denote the degrees, minutes, and seconds of latitude, and the next 7 digits denote degrees, minutes, and seconds of longitude; the last 2 digits are a sequential number for wells within a 1-second grid. In the event that the latitude-longitude coordinates for a well and miscellaneous site are the same, a sequential number such as "01," "02," and so forth, would be assigned as one would for wells (see fig. 1).
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	USGS Identifier
description	The USGS identifier for identifying a hydrologic formation. Example: The USGS identifies wells and miscellaneous site-numbering system is based on the grid system of latitude and longitude. The system provides the geographic location of the well or miscellaneous site and a unique number for each site. The number consists of 15 digits. The first 6 digits denote the degrees, minutes, and seconds of latitude, and the next 7 digits denote degrees, minutes, and seconds of longitude; the last 2 digits are a sequential number for wells within a 1-second grid. In the event that the latitude-longitude coordinates for a well and miscellaneous site are the same, a sequential number such as "01," "02," and so forth, would be assigned as one would for wells (see fig. 1).
dataFormat	int32
isNullable	true

Traits

List of traits for the UsgsIdentifier attribute are listed here.

is.dataFormat.integer
has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{039ECF73-F04E-4997-A558-345EE1FF6972}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en USGS Identifier	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The USGS identifier for identifying a hydrologic formation. Example: The USGS identifies wells and miscellaneous site-numbering system is based on the grid system of latitude and longitude. The system provides the geographic location of the well or miscellaneous site and a unique number for each site. The number consists of 15 digits. The first 6 digits denote the degrees, minutes, and seconds of latitude, and the next 7 digits denote degrees, minutes, and seconds of longitude; the last 2 digits are a sequential number for wells within a 1-second grid. In the event that the latitude-longitude coordinates for a well and miscellaneous site are the same, a sequential number such as "01," "02," and so forth, would be assigned as one would for wells (see fig. 1).	entity	a reference to the constant entity holding the list of localized text

is.dataFormat.integer

MinimumAltitudeUnits

The minimum vertical distance of a hydrologic formation measured from Mean Sea Level (MSL).
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Minimum Altitude Units
description	The minimum vertical distance of a hydrologic formation measured from Mean Sea Level (MSL).
dataFormat	int32
isNullable	true

Traits

List of traits for the MinimumAltitudeUnits attribute are listed here.

is.dataFormat.integer
has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{F7216BC2-DC5B-4C46-BFEF-071583D3747A}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Minimum Altitude Units	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The minimum vertical distance of a hydrologic formation measured from Mean Sea Level (MSL).	entity	a reference to the constant entity holding the list of localized text

is.dataFormat.integer

MaximumAltitudeUnits

The maximum vertical distance of a hydrologic formation measured from Mean Sea Level (MSL)
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Maximum Altitude Units
description	The maximum vertical distance of a hydrologic formation measured from Mean Sea Level (MSL)
dataFormat	int32
isNullable	true

Traits

List of traits for the MaximumAltitudeUnits attribute are listed here.

is.dataFormat.integer
has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{BA9290D3-94F3-4C03-9510-B327D0780420}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Maximum Altitude Units	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The maximum vertical distance of a hydrologic formation measured from Mean Sea Level (MSL)	entity	a reference to the constant entity holding the list of localized text

is.dataFormat.integer

AltitudeUomId

The unique identifier of a Unit Of Measure.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Altitude UOM ID
description	The unique identifier of a Unit Of Measure.
dataFormat	int32
isNullable	true

Traits

List of traits for the AltitudeUomId attribute are listed here.

is.dataFormat.integer
is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Altitude UOM ID	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The unique identifier of a Unit Of Measure.	entity	a reference to the constant entity holding the list of localized text

is.linkedEntity.identifier
Marks the attribute(s) that hold foreign key references to a linked (used as an attribute) entity. This attribute is added to the resolved entity to enumerate the referenced entities.

Parameter	Value	Data type	Explanation
entityReferences	entityReference attributeReference UnitOfMeasure.cdm.json/UnitOfMeasure UnitOfMeasureId	entity	a reference to the constant entity holding the list of entity references

has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{F739D7B3-FACF-440F-AA0E-C191D9EDCA92}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.dataFormat.integer

MaximumProbableFloodHeight

The maximum probably height of hydrologic formation during flood.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Maximum Probable Flood Height
description	The maximum probably height of hydrologic formation during flood.
dataFormat	decimal
isNullable	true

Traits

List of traits for the MaximumProbableFloodHeight attribute are listed here.

is.dataFormat.numeric.shaped
for setting the exact precision and scale of numeric values

Parameter	Value	Data type	Explanation
precision	"18"	integer	the total number of significant digits
scale	"8"	integer	the number of digits to the right of the decimal place

has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{55A3E479-9E0B-44B5-8346-F33258984A45}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Maximum Probable Flood Height	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The maximum probably height of hydrologic formation during flood.	entity	a reference to the constant entity holding the list of localized text

is.dataFormat.numeric.shaped
for setting the exact precision and scale of numeric values

FloodPeakDischargeUnits

The peak flood discharge units during flood.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Flood Peak Discharge Units
description	The peak flood discharge units during flood.
dataFormat	int32
isNullable	true

Traits

List of traits for the FloodPeakDischargeUnits attribute are listed here.

is.dataFormat.integer
has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{192E0028-F32F-4D63-8CAD-004AC19DF5C7}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Flood Peak Discharge Units	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The peak flood discharge units during flood.	entity	a reference to the constant entity holding the list of localized text

is.dataFormat.integer

FloodOfRecordHeight

The maximum height at flood.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Flood Of Record Height
description	The maximum height at flood.
dataFormat	decimal
isNullable	true

Traits

List of traits for the FloodOfRecordHeight attribute are listed here.

is.dataFormat.numeric.shaped
for setting the exact precision and scale of numeric values

Parameter	Value	Data type	Explanation
precision	"18"	integer	the total number of significant digits
scale	"8"	integer	the number of digits to the right of the decimal place

has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{B214E21E-961C-457A-A34F-BD84E3D54D7A}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Flood Of Record Height	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The maximum height at flood.	entity	a reference to the constant entity holding the list of localized text

is.dataFormat.numeric.shaped
for setting the exact precision and scale of numeric values

FloodOfRecordDischargeUnits

The maximum discharge at flood.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Flood Of Record Discharge Units
description	The maximum discharge at flood.
dataFormat	int32
isNullable	true

Traits

List of traits for the FloodOfRecordDischargeUnits attribute are listed here.

is.dataFormat.integer
has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{4116239F-881A-4779-AFF6-ABF4D78B636D}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Flood Of Record Discharge Units	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The maximum discharge at flood.	entity	a reference to the constant entity holding the list of localized text

is.dataFormat.integer

NaturalHydrologicFormationIndicator

Indicates that the hydrologic formation is a natural formation.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Natural Hydrologic Formation Indicator
description	Indicates that the hydrologic formation is a natural formation.
dataFormat	boolean
isNullable	true

Traits

List of traits for the NaturalHydrologicFormationIndicator attribute are listed here.

is.dataFormat.boolean
has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{8ECE4AD8-432E-485E-AD84-21C7F58644F4}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Natural Hydrologic Formation Indicator	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Indicates that the hydrologic formation is a natural formation.	entity	a reference to the constant entity holding the list of localized text

is.dataFormat.boolean

ArtificialHydrologicFormationIndicator

Indicates that the hydrologic formation is an artificial formation.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Artificial Hydrologic Formation Indicator
description	Indicates that the hydrologic formation is an artificial formation.
dataFormat	boolean
isNullable	true

Traits

List of traits for the ArtificialHydrologicFormationIndicator attribute are listed here.

is.dataFormat.boolean
has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{27F3EEAE-B3CA-45C8-8D37-7BCCAB32624A}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Artificial Hydrologic Formation Indicator	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Indicates that the hydrologic formation is an artificial formation.	entity	a reference to the constant entity holding the list of localized text

is.dataFormat.boolean

GeographicAreaId

The unique identifier of a Geographic Area.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Geographic Area ID
description	The unique identifier of a Geographic Area.
dataFormat	int32
isNullable	true

Traits

List of traits for the GeographicAreaId attribute are listed here.

is.dataFormat.integer
is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Geographic Area ID	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The unique identifier of a Geographic Area.	entity	a reference to the constant entity holding the list of localized text

is.linkedEntity.identifier
Marks the attribute(s) that hold foreign key references to a linked (used as an attribute) entity. This attribute is added to the resolved entity to enumerate the referenced entities.

Parameter	Value	Data type	Explanation
entityReferences	entityReference attributeReference GeographicArea.cdm.json/GeographicArea GeographicAreaId	entity	a reference to the constant entity holding the list of entity references

has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{851E3E85-DDDB-4E26-8D86-A11C2B1722CB}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.dataFormat.integer

LocationId

The unique identifier of a Location.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Location ID
description	The unique identifier of a Location.
dataFormat	int32
isNullable	true

Traits

List of traits for the LocationId attribute are listed here.

is.dataFormat.integer
is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Location ID	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The unique identifier of a Location.	entity	a reference to the constant entity holding the list of localized text

is.linkedEntity.identifier
Marks the attribute(s) that hold foreign key references to a linked (used as an attribute) entity. This attribute is added to the resolved entity to enumerate the referenced entities.

Parameter	Value	Data type	Explanation
entityReferences	entityReference attributeReference Location.cdm.json/Location LocationId	entity	a reference to the constant entity holding the list of entity references

has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{0476BEC6-F1E5-4870-BBA4-11BE3DFD51C1}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.dataFormat.integer

FacilityId

The unique identifier of a Facility.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Facility ID
description	The unique identifier of a Facility.
dataFormat	int32
isNullable	true

Traits

List of traits for the FacilityId attribute are listed here.

is.dataFormat.integer
is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Facility ID	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The unique identifier of a Facility.	entity	a reference to the constant entity holding the list of localized text

is.linkedEntity.identifier
Marks the attribute(s) that hold foreign key references to a linked (used as an attribute) entity. This attribute is added to the resolved entity to enumerate the referenced entities.

Parameter	Value	Data type	Explanation
entityReferences	entityReference attributeReference Facility.cdm.json/Facility FacilityId	entity	a reference to the constant entity holding the list of entity references

has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{440A98A7-B022-494A-A1B0-0484345EC9AC}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.dataFormat.integer

LandCapabilityClassificationId

The unique identifier of a Land Capability Classification.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Land Capability Classification ID
description	The unique identifier of a Land Capability Classification.
dataFormat	int32
isNullable	true

Traits

List of traits for the LandCapabilityClassificationId attribute are listed here.

is.dataFormat.integer
has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{48096A8C-0FD9-423F-99D5-83E837319827}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Land Capability Classification ID	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The unique identifier of a Land Capability Classification.	entity	a reference to the constant entity holding the list of localized text

is.dataFormat.integer

FederallyOwnedLandTypeId

The unique identifier of a Federally Owned Land Type.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Federally Owned Land Type ID
description	The unique identifier of a Federally Owned Land Type.
dataFormat	int32
isNullable	true

Traits

List of traits for the FederallyOwnedLandTypeId attribute are listed here.

is.dataFormat.integer
has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{F1B8F1B6-058D-4DAA-8B1B-A13F7B42F419}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Federally Owned Land Type ID	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The unique identifier of a Federally Owned Land Type.	entity	a reference to the constant entity holding the list of localized text

is.dataFormat.integer

FloodZoneTypeId

The unique identifier of a Flood Zone Type.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Flood Zone Type ID
description	The unique identifier of a Flood Zone Type.
dataFormat	int32
isNullable	true

Traits

List of traits for the FloodZoneTypeId attribute are listed here.

is.dataFormat.integer
has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{2277B031-D587-4035-B429-7204C2984845}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Flood Zone Type ID	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The unique identifier of a Flood Zone Type.	entity	a reference to the constant entity holding the list of localized text

is.dataFormat.integer

HydrologicFormationTypeId

The unique identifier of a hydrologic formation type.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Hydrologic Formation Type ID
description	The unique identifier of a hydrologic formation type.
dataFormat	int32
isNullable	true

Traits

List of traits for the HydrologicFormationTypeId attribute are listed here.

is.dataFormat.integer
is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Hydrologic Formation Type ID	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en The unique identifier of a hydrologic formation type.	entity	a reference to the constant entity holding the list of localized text

is.linkedEntity.identifier
Marks the attribute(s) that hold foreign key references to a linked (used as an attribute) entity. This attribute is added to the resolved entity to enumerate the referenced entities.

Parameter	Value	Data type	Explanation
entityReferences	entityReference attributeReference HydrologicFormationType.cdm.json/HydrologicFormationType HydrologicFormationTypeId	entity	a reference to the constant entity holding the list of entity references

has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{333B8101-9BEA-4E03-811D-F39A9850001E}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.dataFormat.integer

HydrologicFormationNote

A note, comment or additional information regarding the hydrologic formation.
First included in: HydrologicFormation (this entity)

Properties

Name	Value
displayName	Hydrologic Formation Note
description	A note, comment or additional information regarding the hydrologic formation.
dataFormat	string
maximumLength	2048
isNullable	true

Traits

List of traits for the HydrologicFormationNote attribute are listed here.

is.dataFormat.character
is.dataFormat.big
Indicates an atomic but multi-unit version of a fundamental type such as a multi byte encoded character, a double precision float, a long integer.

is.dataFormat.array
Indicates a contiguous sequence of fundamental units that should be taken as a whole and considered one value. Array of Character is a String. Array of Byte is a Binary Object.

has.schemaObjectIdentifier
The schema object has an identifier, which is a string, specified as the parameter of the trait. It allows writers to define other identification values.

Parameter	Value	Data type	Explanation
identifier	"{86C9DBD2-9FD9-4B5D-AEB3-BAC174C2BCD9}"	string	The identifier for the schema object. There's no uniqueness guarantee enforced by CDM. It's a contract between reader and writer of the schema.

is.nullable
The attribute value can be set to NULL.

is.localized.displayedAs
Holds the list of language specific display text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en Hydrologic Formation Note	entity	a reference to the constant entity holding the list of localized text

is.localized.describedAs
Holds the list of language specific descriptive text for an object.

Parameter	Value	Data type	Explanation
localizedDisplayText	languageTag displayText en A note, comment or additional information regarding the hydrologic formation.	entity	a reference to the constant entity holding the list of localized text

is.constrained
Maximum length or value constraints.

Parameter	Value	Data type	Explanation
maximumLength	"2048"	integer

is.dataFormat.character
is.dataFormat.array
Indicates a contiguous sequence of fundamental units that should be taken as a whole and considered one value. Array of Character is a String. Array of Byte is a Binary Object.