National Hydro Network




Feature Catalogue
Distribution Profile





Edition version : 1.0.1
Date : 2008-06-01




Scope : Inland Waters, Imagery/Base Maps Earth Cover, Environment, Location







Natural Resources Canada
Earth Sciences Sector
Geomatics Canada
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Sherbrooke (Québec) CanadaJ1J 2E8
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E-mail : geobase@rncan.gc.ca
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Copyright Notice



























































© Her Majesty the Queen in Rights of Canada, Department of Natural Resources.
All rights reserved.
GeoBase®



RELEASES HISTORY

Date Edition Description
2007-06-01 1.0 Original edition.
2008-06-01 1.0.1 Document update. Addition of Network Linear Element in the Generalities section and update of some feature and attribute definitions, in particular the Validity Date attribute of the NHN Work Unit Limit feature.







































This feature catalogue is greatly inspired by the International Standard ISO/TC 211, ISO/FDIS, ISO 19110:2005 Geographic information - Methodology for feature cataloguing.


Generalities

Data Type
For information on the data type of each attribute in the different distribution formats for the NHN product, refer to the document National Hydro Network, Product Distribution Formats, available on the GeoBase portal, under the NHN data section.

Network Linear Element
Generic term used to refer to linear features from the Hydro Network package (Bank, Delimiter, Littoral, Network Linear Flow). A Network Linear Element is always bounded by exactly two Hydro Junction features, also from the Hydro Network package.

Same name attributes
Values of attributes bearing the same name including a sequential number to differentiate them (e.g. Name 1 and Name 2) are provided starting with the attribute bearing the #1, then the #2 and so on. The presented values order does not express in any way a priority order of the set values.

UUID
The method used for the generation of Universal Unique Identifiers (UUID) is defined in the National Vector Data - Identification Rules document available on the GeoBase portal, under the NHN data section.


Table of Contents

Object Metadata Attributes

NHN Feature Classes:
Bank - Rive
Delimiter - Délimiteur
External Geometry Event - Événement externe géométrique
External Line Event - Événement externe ligne
External Point Event - Événement externe point
Flow Property Event - Événement écoulement hydrographique
Hydrographic Obstacle Entity - Entité obstacle hydrographique
Hydro Junction - Jonction hydro
Island - Île
Littoral - Littoral
Manmade Hydrographic Entity - Entité hydrographique anthropique
Manmade Line Event - Événement anthropique ligne
Manmade Point Event - Événement anthropique point
Named Feature - Entité nommée
Network Linear Flow - Filamentaire d'écoulement
Obstacle Line Event - Événement obstacle ligne
Obstacle Point Event - Événement obstacle point
Single Line Watercourse - Cours d'eau simple
Waterbody - Région hydrique

Feature Class not part of the NHN Standard:
NHN Work Unit Limit - Limite d'unité de travail RHN


























NB Attributes described in the Object Metadata Attributes section apply to all NHN feature classes.

Object Metadata Attributes:
Attribute Name Attribute Definition
Acquisition Technique The type of data source used to generate the data.
Domain:
Label Definition
-1 Unknown Impossible to determine the type.
0 None No source value available.
1 Other All possible values not explicitly mentioned in the domain.
2 GPS Data collected using a GPS device.
3 Orthoimage Satellite imagery orthorectified.
4 Orthophoto Aerial photo orthorectified.
5 Vector Data Vector digital data.
6 Paper Map Conventional sources of information like maps or plans.
7 Field Completion Information gathered from people directly on the field.
Completely Cover Flag indicating if Object Metadata cover the entire object or only a portion of it.
Domain:
Label Definition
-1 Unknown Impossible to determine.
0 No Partially covered.
1 Yes Completely covered.
Dataset Name NHN dataset identifier.
Domain:  7-character code based on the naming convention of the Water Survey of Canada Sub-Sub-Drainage Areas (WSCSSDA) and/or the Fondamental Drainage Areas from the Atlas of Canada (FDAAC).
Planimetric Accuracy Planimetric data accuracy expressed as the Circular Map Accuracy Standard (CMAS).
Domain:  [-1, 0...50] A real or integer number. Value "-1" is used when not applicable.
Provider The status of the agency that generated (created or revised) the object.
Domain:
Label Definition
1 Other All possible values not explicitly mentioned in the domain.
2 Federal Federal departments or agencies.
3 Provincial/Territorial Provincial / territorial departments or agencies.
4 Municipal Municipal departments or agencies.
Validity Date Date of the data source used to create, revise or confirm an object. A source corresponds to any analog or digital document or field validation (e.g. aerial photography, imagery, GPS).
Domain:  A date in the format YYYYMMDD. If the month or the day is unknown, the corresponding characters are left blank (e.g. 20060630, 200606, 2006). The whole field is left blank if unknown.



Return
Feature Class:
Name - (French name) Package Geometry
Bank - (Rive) Hydro Network Line
Definition
A feature delimiting all or part of a Waterbody feature.

Attributes:
Attribute Name Attribute Definition
From Junction The NID of the Hydro Junction marking the beginning of the Network Linear Element (foreign key).
Domain:  A UUID.
Island NID The NID of the Island delimited by the Bank or Littoral (foreign key).
Domain:  A UUID. The field is left blank when not applicable.
Isolated A Waterbody or a Single Line Watercourse disjoint from any other Waterbody, Single Line Watercourse or Littoral; or A Bank disjoint from any Delimiter (Contiguous Waterbodies, Tidal River, Coastline) or Network Linear Flow (Observed or Constructed); or A Network Linear Flow disjoint from any other Network Linear Flow, Bank or Littoral.
Domain:
Label Definition
0 False Not isolated
1 True Isolated
NID A unique national identifier assigned to each object.
Domain:  A UUID.
Permanency Nature of the occurrence through time.
Domain:
Label Definition
-1 Unknown Impossible to determine.
1 Permanent Intended to exist or function for a long, indefinite period.
2 Intermittent Coming and going at intervals.
Shoreline Water Level Elevation datum level of a body of water's free-water surface.
Domain:
Label Definition
-1 Unknown Impossible to determine.
0 None None of the other values.
1 HHWLT Higher high water, large tide. Average of the highest high waters, one from each of the 19 years of prediction.
2 HHWMT Higher high water, mean tide. Average of all the higher high waters from 19 years of prediction.
3 LLWMT Lower low water, mean tide. Average of all the lowest low water, one from each of the 19 years of prediction.
4 LLWLT Lower low water, large tide. Average of the lowest low water, one from each of the 19 years of prediction.
To Junction The NID of the Hydro Junction marking the end of the Network Linear Element (foreign key).
Domain:  A UUID.
Waterbody NID The NID of the Waterbody delimited by the Bank (foreign key).
Domain:  A UUID.
Water Definition The nature of a body of water defined according to its water velocity and usage.
Domain:
Label Definition
-1 Unknown Impossible to determine.
0 None None of the other values.
1 Canal An artificial body of water serving as a navigable waterway or to channel water.
4 Lake A natural and usually flat body of water.
5 Reservoir A wholly or partially manmade body of water for storing and/or regulating and controlling water.
6 Watercourse A natural body of water through which water may flow.
7 Tidal River A natural body of water in which flow and water surface elevation are affected by the tide.
8 Liquid Waste Liquid waste or discharge from an industrial complex.
9 Pond A body of standing water, usually smaller than a lake.
10 Side Channel A channel providing an alternative water way within a flowing body of water.
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




Return
Feature Class:
Name - (French name) Package Geometry
Delimiter - (Délimiteur) Hydro Network Line
Definition
A virtual feature delimiting all or part of a Waterbody or dividing an Island feature.

Attributes:
Attribute Name Attribute Definition
Delimiter Type The nature of the Delimiter based on the delimited features characteristics.
Domain:
Label Definition
0 None None of the other values.
1 Contiguous Waterbodies Separates two contiguous Waterbodies.
2 Tidal River Separates two contiguous Waterbodies of which one is affected by the tide.
3 Coastline Separates the ocean from its affluents.
4 NatProvTer Limit Delimits a Waterbody or an Island at a national, provincial or territorial boundary.
5 NHN Work Unit Delimits a Waterbody or an Island at a NHN Work Unit Limit.
From Junction The NID of the Hydro Junction marking the beginning of the Network Linear Element (foreign key).
Domain:  A UUID.
Island 1 NID The NID of the Island delimited by the Delimiter (foreign key).
Domain:  A UUID. The field is left blank when not applicable.
Island 2 NID The NID of the Island delimited by the Delimiter (foreign key).
Domain:  A UUID. The field is left blank when not applicable.
NID A unique national identifier assigned to each object.
Domain:  A UUID.
To Junction The NID of the Hydro Junction marking the end of the Network Linear Element (foreign key).
Domain:  A UUID.
Waterbody 1 NID The NID of the Waterbody delimited by the Delimiter (foreign key).
Domain:  A UUID. The field is left blank when not applicable.
Waterbody 2 NID The NID of the Waterbody delimited by the Delimiter (foreign key).
Domain:  A UUID. The field is left blank when not applicable.
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




Return
Feature Class:
Name - (French name) Package Geometry
External Geometry Event - (Événement externe géométrique) Hydro Events N/A
Definition
A point event, positioned at the intersection of a Network Linear Element and a network type phenomenon stored in an external database, providing linkage attributes to the latter.

Attributes:
Attribute Name Attribute Definition
External Agency The name of the external database custodian.
Domain:  An agency name or acronym.
External ID The identifier of the phenomenon stored in an external database used to facilitate the transfer of data between agencies and to provide a link between the NHN geometry and the external phenomenon.
Domain:  An external identifier.
From Point Position The planimetric distance, expressed in percentage, marking the position of a point event or the beginning of a linear event along a Network Linear Element, measured from the first vertex of this last versus its total length.
Domain:  [0-100] A real number.
Network Linear Element Class Name Class name of the Network Linear Element on which the event is positioned.
Domain:  A class name.
Network Linear Element NID The NID of the Network Linear Element on which the event is positioned (foreign key).
Domain:  A UUID.
NID A unique national identifier assigned to each object.
Domain:  A UUID.
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




Return
Feature Class:
Name - (French name) Package Geometry
External Line Event - (Événement externe ligne) Hydro Events N/A
Definition
A linear event, positioned along a Network Linear Element, providing linkage attributes to a linear or area type phenomenon stored in an external database.

Attributes:
Attribute Name Attribute Definition
Event Name The name of the phenomenon in the external database.
Domain:  A phenomenon name.
External Agency The name of the external database custodian.
Domain:  An agency name or acronym.
External ID The identifier of the phenomenon stored in an external database used to facilitate the transfer of data between agencies and to provide a link between the NHN geometry and the external phenomenon.
Domain:  An external identifier.
From Point Position The planimetric distance, expressed in percentage, marking the position of a point event or the beginning of a linear event along a Network Linear Element, measured from the first vertex of this last versus its total length.
Domain:  [0-100] A real number.
Network Linear Element Class Name Class name of the Network Linear Element on which the event is positioned.
Domain:  A class name.
Network Linear Element NID The NID of the Network Linear Element on which the event is positioned (foreign key).
Domain:  A UUID.
NID A unique national identifier assigned to each object.
Domain:  A UUID.
To Point Position The planimetric distance, expressed in percentage, marking the end of a linear event along a Network Linear Element, measured from the first vertex of this last versus its total length.
Domain:  [0-100] A real number.
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




Return
Feature Class:
Name - (French name) Package Geometry
External Point Event - (Événement externe point) Hydro Events N/A
Definition
A point event, positioned along a Network Linear Element, providing linkage attributes to a point or linear type phenomenon stored in an external database.

Attributes:
Attribute Name Attribute Definition
Event Name The name of the phenomenon in the external database.
Domain:  A phenomenon name.
External Agency The name of the external database custodian.
Domain:  An agency name or acronym.
External ID The identifier of the phenomenon stored in an external database used to facilitate the transfer of data between agencies and to provide a link between the NHN geometry and the external phenomenon.
Domain:  An external identifier.
From Point Position The planimetric distance, expressed in percentage, marking the position of a point event or the beginning of a linear event along a Network Linear Element, measured from the first vertex of this last versus its total length.
Domain:  [0-100] A real number.
Network Linear Element Class Name Class name of the Network Linear Element on which the event is positioned.
Domain:  A class name.
Network Linear Element NID The NID of the Network Linear Element on which the event is positioned (foreign key).
Domain:  A UUID.
NID A unique national identifier assigned to each object.
Domain:  A UUID.
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




Return
Feature Class:
Name - (French name) Package Geometry
Flow Property Event - (Événement écoulement hydrographique) Hydro Events N/A
Definition
A linear event, positioned along a Network Linear Flow, describing the properties of a body of water according to its water velocity and usage.

Attributes:
Attribute Name Attribute Definition
From Point Position The planimetric distance, expressed in percentage, marking the position of a point event or the beginning of a linear event along a Network Linear Element, measured from the first vertex of this last versus its total length.
Domain:  [0-100] A real number.
Network Linear Element Class Name Class name of the Network Linear Element on which the event is positioned.
Domain:  A class name.
Network Linear Element NID The NID of the Network Linear Element on which the event is positioned (foreign key).
Domain:  A UUID.
NID A unique national identifier assigned to each object.
Domain:  A UUID.
To Point Position The planimetric distance, expressed in percentage, marking the end of a linear event along a Network Linear Element, measured from the first vertex of this last versus its total length.
Domain:  [0-100] A real number.
Water Definition The nature of a body of water defined according to its water velocity and usage.
Domain:
Label Definition
-1 Unknown Impossible to determine.
0 None None of the other values.
1 Canal An artificial body of water serving as a navigable waterway or to channel water.
2 Conduit An artificial system, such as an Aqueduct, Penstock, Flume, or Sluice, designed to carry water for purposes other than drainage.
3 Ditch Small, open manmade channel constructed through earth or rock for the purpose of conveying water.
4 Lake A natural and usually flat body of water.
5 Reservoir A wholly or partially manmade body of water for storing and/or regulating and controlling water.
6 Watercourse A natural body of water through which water may flow.
7 Tidal River A natural body of water in which flow and water surface elevation are affected by the tide.
8 Liquid Waste Liquid waste or discharge from an industrial complex.
9 Pond A body of standing water, usually smaller than a lake.
10 Side Channel A channel providing an alternative water way within a flowing body of water.
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




Return
Feature Class:
Name - (French name) Package Geometry
Hydrographic Obstacle Entity - (Entité obstacle hydrographique) Hydrographic Point - Line - Area
Definition
A feature representing an obstacle that disturbs or impedes the natural flow of surface water.

Attributes:
Attribute Name Attribute Definition
Geographical Name Database Name of the database from which the geographical name comes from.
Domain:  The name or acronym of a geographical name database. The field is left blank when not applicable.
ID Date The date at which the geographical name identifier(s) was (were) associated to the feature.
Domain:  A date in the format YYYYMMDD. If the month or the day is unknown, corresponding characters are left blank (e.g. 20060630, 200606, 2006). The field is left blank if unknown or not applicable.
Name 1 Official geographical name from the geographical name database. For the Network Linear Flow feature, only river type geographical names apply.
Domain:  A geographical name. The field is left blank when not applicable.
Name 2 Official geographical name from the geographical name database. For the Network Linear Flow feature, only river type geographical names apply.
Domain:  A geographical name. The field is left blank when not applicable.
Name Date The date at which the geographical name(s) was (were) associated to its (their) geographical name identifier.
Domain:  A date in the format YYYYMMDD. If the month or the day is unknown, corresponding characters are left blank (e.g. 20060630, 200606, 2006). The field is left blank if unknown or not applicable.
Name ID 1 The geographical name identifier of the Name 1 attribute value from the geographical name database.
Domain:  A geographical name identifier. The field is left blank when not applicable.
Name ID 2 The geographical name identifier of the Name 2 attribute value from the geographical name database.
Domain:  A geographical name identifier. The field is left blank when not applicable.
NID A unique national identifier assigned to each object.
Domain:  A UUID.
Obstacle Type The nature of the hydrographic obstacle.
Domain:
Label Definition
-1 Unknown Impossible to determine.
0 None None of the other values.
1 Falls A perpendicular or steep drop in a body of water over which water flows.
2 Rapids A fast-flowing, often turbulent, section of a body of water, generally containing exposed rocks or boulders.
3 Reef A rock formation alternatively covered and uncovered by the tide.
4 Rocks A rock or earthen formation always visible above water surface.
5 Disappearing Stream Extremity of a body of water or a natural depression where water disappears into the ground.
6 Exposed Shipwreck The remains of a grounded ship partially above the water surface.
7 Ford A shallow part of a body of water suitable for crossing by people or vehicles.
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




Return
Feature Class:
Name - (French name) Package Geometry
Hydro Junction - (Jonction hydro) Hydro Network Point
Definition
A feature, always positionned at each end of a Network Linear Element, used to determine adjoining linear features to this last.

Attributes:
Attribute Name Attribute Definition
Junction Type The nature of the Hydro Junction defined by the adjoining Network Linear Elements or a boundary/limit.
Domain:
Label Definition
0 None None of the other values.
1 Network Linear Flow Adjoining to Network Linear Flows only.
2 Network Linear Flow and Shoreline Element Adjoining to a Network Linear Flow and a Littoral or Bank.
3 Water Boundary Element Adjoining to a Bank, a Littoral or a Delimiter.
4 Start and End of Network Linear Flow Adjoining to a single Network Linear Flow only.
5 NatProvTer Adjoining to a Network Linear Element and a national, provincial or territorial boundary; or Adjoining to a Littoral and a NHN Work Unit Limit.
6 Network Linear Flow and Delimiter Adjoining to a Network Linear Flow and a Delimiter.
7 Start of Network connected to Bank Adjoining to a single Network Linear Flow and a Bank.
NID A unique national identifier assigned to each object.
Domain:  A UUID.
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




Return
Feature Class:
Name - (French name) Package Geometry
Island - (Île) Hydrographic Area
Definition
Simple polygon feature defined by a single outer ring describing a land area surrounded by water.

Attributes:
Attribute Name Attribute Definition
Coastal Island An Island surrounded by the sea.
Domain:
Label Definition
-1 Unknown Impossible to determine.
0 No or False Not a coastal island.
1 Yes or True A coastal island.
Geographical Name Database Name of the database from which the geographical name comes from.
Domain:  The name or acronym of a geographical name database. The field is left blank when not applicable.
ID Date The date at which the geographical name identifier(s) was (were) associated to the feature.
Domain:  A date in the format YYYYMMDD. If the month or the day is unknown, corresponding characters are left blank (e.g. 20060630, 200606, 2006). The field is left blank if unknown or not applicable.
Name 1 Official geographical name from the geographical name database. For the Network Linear Flow feature, only river type geographical names apply.
Domain:  A geographical name. The field is left blank when not applicable.
Name 2 Official geographical name from the geographical name database. For the Network Linear Flow feature, only river type geographical names apply.
Domain:  A geographical name. The field is left blank when not applicable.
Name Date The date at which the geographical name(s) was (were) associated to its (their) geographical name identifier.
Domain:  A date in the format YYYYMMDD. If the month or the day is unknown, corresponding characters are left blank (e.g. 20060630, 200606, 2006). The field is left blank if unknown or not applicable.
Name ID 1 The geographical name identifier of the Name 1 attribute value from the geographical name database.
Domain:  A geographical name identifier. The field is left blank when not applicable.
Name ID 2 The geographical name identifier of the Name 2 attribute value from the geographical name database.
Domain:  A geographical name identifier. The field is left blank when not applicable.
NID A unique national identifier assigned to each object.
Domain:  A UUID.
Sand Island An island composed almost entirely of sand where the growth of trees and shrubs is limited by constant winds, salt spray, and blowing sand.
Domain:
Label Definition
-1 Unknown Impossible to determine.
1 No or False Not a sand island.
2 Yes or True A sand island.
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




Return
Feature Class:
Name - (French name) Package Geometry
Littoral - (Littoral) Hydro Network Line
Definition
A feature representing the boundary between land and sea.

Attributes:
Attribute Name Attribute Definition
From Junction The NID of the Hydro Junction marking the beginning of the Network Linear Element (foreign key).
Domain:  A UUID.
Island NID The NID of the Island delimited by the Bank or Littoral (foreign key).
Domain:  A UUID. The field is left blank when not applicable.
NID A unique national identifier assigned to each object.
Domain:  A UUID.
Shoreline Water Level Elevation datum level of a body of water's free-water surface.
Domain:
Label Definition
-1 Unknown Impossible to determine.
0 None None of the other values.
1 HHWLT Higher high water, large tide. Average of the highest high waters, one from each of the 19 years of prediction.
2 HHWMT Higher high water, mean tide. Average of all the higher high waters from 19 years of prediction.
3 LLWMT Lower low water, mean tide. Average of all the lowest low water, one from each of the 19 years of prediction.
4 LLWLT Lower low water, large tide. Average of the lowest low water, one from each of the 19 years of prediction.
To Junction The NID of the Hydro Junction marking the end of the Network Linear Element (foreign key).
Domain:  A UUID.
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




Return
Feature Class:
Name - (French name) Package Geometry
Manmade Hydrographic Entity - (Entité hydrographique anthropique) Hydrographic Point - Line - Area
Definition
A feature representing a manmade structure constructed to facilitate access to a water resource or control water level.

Attributes:
Attribute Name Attribute Definition
Geographical Name Database Name of the database from which the geographical name comes from.
Domain:  The name or acronym of a geographical name database. The field is left blank when not applicable.
ID Date The date at which the geographical name identifier(s) was (were) associated to the feature.
Domain:  A date in the format YYYYMMDD. If the month or the day is unknown, corresponding characters are left blank (e.g. 20060630, 200606, 2006). The field is left blank if unknown or not applicable.
Manmade Status The operational condition of the manmade structure at a specified time.
Domain:
Label Definition
-1 Unknown Impossible to determine.
1 Operational Ready for or in condition to undertake a destined function.
2 Abandoned No longer suitable for a destined function.
Manmade Type The nature of the hydrographic manmade structure.
Domain:
Label Definition
-1 Unknown Impossible to determine.
0 None None of the other values.
1 Dam A manmade structure built across a body of water to control the water flow.
2 Dock A waterway extending between two piers or wharves or cut into the land to receive ships.
3 Wharf A structure built along or at an angle to the shore of navigable waters so that ships may lie alongside to receive and discharge cargo and passengers.
4 Breakwater A structure used for breaking the force of waves to protect a beach, harbour, or other waterfront facilities.
5 Dike/Levee An embankment built to restrict the flow of water or other liquids.
6 Lock Gate A gate on a navigable canal used to raise or lower the water level so that boats may pass from one level to another.
7 Boat Ramp A sloped area partially above and partially below the water surface used for launching or landing watercraft.
8 Fish Ladder A constructed series of pools arranged like steps to enable fish to pass an obstacle. Fish ladders are also referred to as fish ways, fish passes, and fish passage facilities.
9 Slip A substructure serving as a place for building or repairing ships.
Name 1 Official geographical name from the geographical name database. For the Network Linear Flow feature, only river type geographical names apply.
Domain:  A geographical name. The field is left blank when not applicable.
Name 2 Official geographical name from the geographical name database. For the Network Linear Flow feature, only river type geographical names apply.
Domain:  A geographical name. The field is left blank when not applicable.
Name Date The date at which the geographical name(s) was (were) associated to its (their) geographical name identifier.
Domain:  A date in the format YYYYMMDD. If the month or the day is unknown, corresponding characters are left blank (e.g. 20060630, 200606, 2006). The field is left blank if unknown or not applicable.
Name ID 1 The geographical name identifier of the Name 1 attribute value from the geographical name database.
Domain:  A geographical name identifier. The field is left blank when not applicable.
Name ID 2 The geographical name identifier of the Name 2 attribute value from the geographical name database.
Domain:  A geographical name identifier. The field is left blank when not applicable.
NID A unique national identifier assigned to each object.
Domain:  A UUID.
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




Return
Feature Class:
Name - (French name) Package Geometry
Manmade Line Event - (Événement anthropique ligne) Hydro Events N/A
Definition
A linear event, positioned along a Network Linear Element, describing a line or area type Manmade Hydrographic Entity.

Attributes:
Attribute Name Attribute Definition
From Point Position The planimetric distance, expressed in percentage, marking the position of a point event or the beginning of a linear event along a Network Linear Element, measured from the first vertex of this last versus its total length.
Domain:  [0-100] A real number.
Hydrographic Entity Class Name Name of the referenced Hydrographic package feature class.
Domain:  A class name.
Manmade Hydrographic Entity NID The NID of the referenced Manmade Hydrographic Entity (foreign key).
Domain:  A UUID.
Manmade Status The operational condition of the manmade structure at a specified time.
Domain:
Label Definition
-1 Unknown Impossible to determine.
1 Operational Ready for or in condition to undertake a destined function.
2 Abandoned No longer suitable for a destined function.
Manmade Type The nature of the hydrographic manmade structure.
Domain:
Label Definition
-1 Unknown Impossible to determine.
0 None None of the other values.
1 Dam A manmade structure built across a body of water to control the water flow.
2 Dock A waterway extending between two piers or wharves or cut into the land to receive ships.
3 Wharf A structure built along or at an angle to the shore of navigable waters so that ships may lie alongside to receive and discharge cargo and passengers.
4 Breakwater A structure used for breaking the force of waves to protect a beach, harbour, or other waterfront facilities.
5 Dike/Levee An embankment built to restrict the flow of water or other liquids.
6 Lock Gate A gate on a navigable canal used to raise or lower the water level so that boats may pass from one level to another.
7 Boat Ramp A sloped area partially above and partially below the water surface used for launching or landing watercraft.
8 Fish Ladder A constructed series of pools arranged like steps to enable fish to pass an obstacle. Fish ladders are also referred to as fish ways, fish passes, and fish passage facilities.
9 Slip A substructure serving as a place for building or repairing ships.
Network Linear Element Class Name Class name of the Network Linear Element on which the event is positioned.
Domain:  A class name.
Network Linear Element NID The NID of the Network Linear Element on which the event is positioned (foreign key).
Domain:  A UUID.
NID A unique national identifier assigned to each object.
Domain:  A UUID.
To Point Position The planimetric distance, expressed in percentage, marking the end of a linear event along a Network Linear Element, measured from the first vertex of this last versus its total length.
Domain:  [0-100] A real number.
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




Return
Feature Class:
Name - (French name) Package Geometry
Manmade Point Event - (Événement anthropique point) Hydro Events N/A
Definition
A point event, positioned along a Network Linear Element, describing a point or line type Manmade Hydrographic Entity.

Attributes:
Attribute Name Attribute Definition
From Point Position The planimetric distance, expressed in percentage, marking the position of a point event or the beginning of a linear event along a Network Linear Element, measured from the first vertex of this last versus its total length.
Domain:  [0-100] A real number.
Hydrographic Entity Class Name Name of the referenced Hydrographic package feature class.
Domain:  A class name.
Manmade Hydrographic Entity NID The NID of the referenced Manmade Hydrographic Entity (foreign key).
Domain:  A UUID.
Manmade Status The operational condition of the manmade structure at a specified time.
Domain:
Label Definition
-1 Unknown Impossible to determine.
1 Operational Ready for or in condition to undertake a destined function.
2 Abandoned No longer suitable for a destined function.
Manmade Type The nature of the hydrographic manmade structure.
Domain:
Label Definition
-1 Unknown Impossible to determine.
0 None None of the other values.
1 Dam A manmade structure built across a body of water to control the water flow.
2 Dock A waterway extending between two piers or wharves or cut into the land to receive ships.
3 Wharf A structure built along or at an angle to the shore of navigable waters so that ships may lie alongside to receive and discharge cargo and passengers.
4 Breakwater A structure used for breaking the force of waves to protect a beach, harbour, or other waterfront facilities.
5 Dike/Levee An embankment built to restrict the flow of water or other liquids.
6 Lock Gate A gate on a navigable canal used to raise or lower the water level so that boats may pass from one level to another.
7 Boat Ramp A sloped area partially above and partially below the water surface used for launching or landing watercraft.
8 Fish Ladder A constructed series of pools arranged like steps to enable fish to pass an obstacle. Fish ladders are also referred to as fish ways, fish passes, and fish passage facilities.
9 Slip A substructure serving as a place for building or repairing ships.
Network Linear Element Class Name Class name of the Network Linear Element on which the event is positioned.
Domain:  A class name.
Network Linear Element NID The NID of the Network Linear Element on which the event is positioned (foreign key).
Domain:  A UUID.
NID A unique national identifier assigned to each object.
Domain:  A UUID.
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




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Feature Class:
Name - (French name) Package Geometry
Named Feature - (Entité nommée) Toponymy Point - Line - Area
Definition
A feature delineating the extent, in whole or in part, of a toponymic phenomenon for which the geometry does not fully correspond to that of another feature.

Attributes:
Attribute Name Attribute Definition
Entity Type The nature of the named phenomenon.
Domain:
Label Definition
1 Marine Waterbody A hydrographic phenomenon within the ocean.
2 Fault Line A fault line in the terrain.
3 Landscape A landscape area.
4 MassIce A mass of permanent ice or snow.
5 Mountains A mountain range or elevated lands.
6 Peninsula A projection of land into a body of water.
7 Undersea Feature An offshore undersea feature.
8 Inland Water A hydrographic phenomenon within an inland body of water; such as arms, bays, channels, lakes, rapids, waterfalls.
Geographical Name Database Name of the database from which the geographical name comes from.
Domain:  The name or acronym of a geographical name database. The field is left blank when not applicable.
ID Date The date at which the geographical name identifier(s) was (were) associated to the feature.
Domain:  A date in the format YYYYMMDD. If the month or the day is unknown, corresponding characters are left blank (e.g. 20060630, 200606, 2006). The field is left blank if unknown or not applicable.
Name Official geographical name from the geographical name database.
Domain:  A geographical name.
Name Date The date at which the geographical name(s) was (were) associated to its (their) geographical name identifier.
Domain:  A date in the format YYYYMMDD. If the month or the day is unknown, corresponding characters are left blank (e.g. 20060630, 200606, 2006). The field is left blank if unknown or not applicable.
Name ID The geographical name identifier from the geographical name database.
Domain:  A geographical name identifier.
NID A unique national identifier assigned to each object.
Domain:  A UUID.
Related NID The NID of the feature referenced by the Named Feature (foreign key).
Domain:  A UUID.
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




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Feature Class:
Name - (French name) Package Geometry
Network Linear Flow - (Filamentaire d'écoulement) Hydro Network Line
Definition
A feature that traces the movement of water in a one-dimension virtual water flow route.

Attributes:
Attribute Name Attribute Definition
Flow Direction The water flow direction compared to the feature digitizing direction.
Domain:
Label Definition
-1 Unknown Impossible to determine.
1 Same Direction The flow direction and the digitizing direction are the same.
2 Opposite Direction The flow direction and the digitizing direction are opposite.
3 N/A Not applicable.
From Junction The NID of the Hydro Junction marking the beginning of the Network Linear Element (foreign key).
Domain:  A UUID.
Geographical Name Database Name of the database from which the geographical name comes from.
Domain:  The name or acronym of a geographical name database. The field is left blank when not applicable.
ID Date The date at which the geographical name identifier(s) was (were) associated to the feature.
Domain:  A date in the format YYYYMMDD. If the month or the day is unknown, corresponding characters are left blank (e.g. 20060630, 200606, 2006). The field is left blank if unknown or not applicable.
Isolated A Waterbody or a Single Line Watercourse disjoint from any other Waterbody, Single Line Watercourse or Littoral; or A Bank disjoint from any Delimiter (Contiguous Waterbodies, Tidal River, Coastline) or Network Linear Flow (Observed or Constructed); or A Network Linear Flow disjoint from any other Network Linear Flow, Bank or Littoral.
Domain:
Label Definition
0 False Not isolated
1 True Isolated
Level Priority The Network Linear Flow route classification within the hydrographic network.
Domain:
Label Definition
-1 Unknown Impossible to determine.
1 Primary Main route.
2 Secondary Alternate route.
Name 1 Official geographical name from the geographical name database. For the Network Linear Flow feature, only river type geographical names apply.
Domain:  A geographical name. The field is left blank when not applicable.
Name 2 Official geographical name from the geographical name database. For the Network Linear Flow feature, only river type geographical names apply.
Domain:  A geographical name. The field is left blank when not applicable.
Name Date The date at which the geographical name(s) was (were) associated to its (their) geographical name identifier.
Domain:  A date in the format YYYYMMDD. If the month or the day is unknown, corresponding characters are left blank (e.g. 20060630, 200606, 2006). The field is left blank if unknown or not applicable.
Name ID 1 The geographical name identifier of the Name 1 attribute value from the geographical name database.
Domain:  A geographical name identifier. The field is left blank when not applicable.
Name ID 2 The geographical name identifier of the Name 2 attribute value from the geographical name database.
Domain:  A geographical name identifier. The field is left blank when not applicable.
Network Flow Type The nature of the Network Linear Flow.
Domain:
Label Definition
-1 Unknown Impossible to determine.
0 None None of the other values.
1 Observed Corresponds to a single line watercourse.
2 Inferred Located in a body of water, excluding liquid waste.
3 Constructed Joins disconnected networks and has no correspondence to a single line watercourse.
NID A unique national identifier assigned to each object.
Domain:  A UUID.
To Junction The NID of the Hydro Junction marking the end of the Network Linear Element (foreign key).
Domain:  A UUID.
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




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Feature Class:
Name - (French name) Package Geometry
Obstacle Line Event - (Événement obstacle ligne) Hydro Events N/A
Definition
A linear event, positioned along a Network Linear Flow, describing a line or area type Hydrographic Obstacle Entity.

Attributes:
Attribute Name Attribute Definition
From Point Position The planimetric distance, expressed in percentage, marking the position of a point event or the beginning of a linear event along a Network Linear Element, measured from the first vertex of this last versus its total length.
Domain:  [0-100] A real number.
Hydrographic Entity Class Name Name of the referenced Hydrographic package feature class.
Domain:  A class name.
Network Linear Element Class Name Class name of the Network Linear Element on which the event is positioned.
Domain:  A class name.
Network Linear Element NID The NID of the Network Linear Element on which the event is positioned (foreign key).
Domain:  A UUID.
NID A unique national identifier assigned to each object.
Domain:  A UUID.
Obstacle Hydrographic Entity NID The NID of the referenced Hydrographic Obstacle Entity (foreign key).
Domain:  A UUID.
Obstacle Type The nature of the hydrographic obstacle.
Domain:
Label Definition
-1 Unknown Impossible to determine.
0 Other Another type.
2 Rapids A fast-flowing, often turbulent, section of a body of water generally containing exposed rocks or boulders.
3 Reef A rock formation alternatively covered and uncovered by the tide.
4 Rocks A rock or earthen formation always visible above water surface.
5 Disappearing Stream Extremity of a body of water or a natural depression where water disappears into the ground.
6 Exposed Shipwreck The remains of a grounded ship partially above the water surface.
7 Ford A shallow part of a body of water suitable for crossing by people or vehicles.
To Point Position The planimetric distance, expressed in percentage, marking the end of a linear event along a Network Linear Element, measured from the first vertex of this last versus its total length.
Domain:  [0-100] A real number.
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




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Feature Class:
Name - (French name) Package Geometry
Obstacle Point Event - (Événement obstacle point) Hydro Events N/A
Definition
A point event, positioned along a Network Linear Flow, describing a point or line type Hydrographic Obstacle Entity.

Attributes:
Attribute Name Attribute Definition
From Point Position The planimetric distance, expressed in percentage, marking the position of a point event or the beginning of a linear event along a Network Linear Element, measured from the first vertex of this last versus its total length.
Domain:  [0-100] A real number.
Hydrographic Entity Class Name Name of the referenced Hydrographic package feature class.
Domain:  A class name.
Network Linear Element Class Name Class name of the Network Linear Element on which the event is positioned.
Domain:  A class name.
Network Linear Element NID The NID of the Network Linear Element on which the event is positioned (foreign key).
Domain:  A UUID.
NID A unique national identifier assigned to each object.
Domain:  A UUID.
Obstacle Hydrographic Entity NID The NID of the referenced Hydrographic Obstacle Entity (foreign key).
Domain:  A UUID.
Obstacle Type The nature of the hydrographic obstacle.
Domain:
Label Definition
-1 Unknown Impossible to determine.
0 Other Another type.
1 Falls A perpendicular or steep drop in a body of water over which water flows.
2 Rapids A fast-flowing, often turbulent, section of a body of water, generally containing exposed rocks or boulders.
3 Reef A rock formation alternatively covered and uncovered by the tide.
4 Rocks A rock or earthen formation always visible above water surface.
5 Disappearing Stream Extremity of a body of water or a natural depression where water disappears into the ground.
6 Exposed Shipwreck The remains of a grounded ship partially above the water surface.
7 Ford A shallow part of a body of water suitable for crossing by people or vehicles.
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




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Feature Class:
Name - (French name) Package Geometry
Single Line Watercourse - (Cours d'eau simple) Hydrographic Line
Definition
A linear feature describing the path of a narrow flow of water on the earth's surface.

Attributes:
Attribute Name Attribute Definition
Geographical Name Database Name of the database from which the geographical name comes from.
Domain:  The name or acronym of a geographical name database. The field is left blank when not applicable.
ID Date The date at which the geographical name identifier(s) was (were) associated to the feature.
Domain:  A date in the format YYYYMMDD. If the month or the day is unknown, corresponding characters are left blank (e.g. 20060630, 200606, 2006). The field is left blank if unknown or not applicable.
Isolated A Waterbody or a Single Line Watercourse disjoint from any other Waterbody, Single Line Watercourse or Littoral; or A Bank disjoint from any Delimiter (Contiguous Waterbodies, Tidal River, Coastline) or Network Linear Flow (Observed or Constructed); or A Network Linear Flow disjoint from any other Network Linear Flow, Bank or Littoral.
Domain:
Label Definition
0 False Not isolated
1 True Isolated
Name 1 Official geographical name from the geographical name database. For the Network Linear Flow feature, only river type geographical names apply.
Domain:  A geographical name. The field is left blank when not applicable.
Name 2 Official geographical name from the geographical name database. For the Network Linear Flow feature, only river type geographical names apply.
Domain:  A geographical name. The field is left blank when not applicable.
Name Date The date at which the geographical name(s) was (were) associated to its (their) geographical name identifier.
Domain:  A date in the format YYYYMMDD. If the month or the day is unknown, corresponding characters are left blank (e.g. 20060630, 200606, 2006). The field is left blank if unknown or not applicable.
Name ID 1 The geographical name identifier of the Name 1 attribute value from the geographical name database.
Domain:  A geographical name identifier. The field is left blank when not applicable.
Name ID 2 The geographical name identifier of the Name 2 attribute value from the geographical name database.
Domain:  A geographical name identifier. The field is left blank when not applicable.
NID A unique national identifier assigned to each object.
Domain:  A UUID.
Permanency Nature of the occurrence through time.
Domain:
Label Definition
-1 Unknown Impossible to determine.
1 Permanent Intended to exist or function for a long, indefinite period.
2 Intermittent Coming and going at intervals.
Water Definition The nature of a body of water defined according to its water velocity and usage.
Domain:
Label Definition
0 None None of the other values.
1 Canal An artificial body of water serving as a navigable waterway or to channel water.
2 Conduit An artificial system, such as an aqueduct, penstock, flume, or sluice, designed to carry water for purposes other than drainage.
3 Ditch Small, open manmade channel constructed through earth or rock for the purpose of conveying water.
6 Watercourse A natural body of water through which water may flow.
7 Tidal River A natural body of water in which flow and water surface elevation are affected by the tide
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




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Feature Class:
Name - (French name) Package Geometry
Waterbody - (Région hydrique) Hydrographic Area
Definition
A polygon feature describing a body of water delimited by one or more Bank or Delimiter features.

Attributes:
Attribute Name Attribute Definition
Geographical Name Database Name of the database from which the geographical name comes from.
Domain:  The name or acronym of a geographical name database. The field is left blank when not applicable.
ID Date The date at which the geographical name identifier(s) was (were) associated to the feature.
Domain:  A date in the format YYYYMMDD. If the month or the day is unknown, corresponding characters are left blank (e.g. 20060630, 200606, 2006). The field is left blank if unknown or not applicable.
Isolated A Waterbody or a Single Line Watercourse disjoint from any other Waterbody, Single Line Watercourse or Littoral; or A Bank disjoint from any Delimiter (Contiguous Waterbodies, Tidal River, Coastline) or Network Linear Flow (Observed or Constructed); or A Network Linear Flow disjoint from any other Network Linear Flow, Bank or Littoral.
Domain:
Label Definition
0 False Not isolated
1 True Isolated
Lake ID 1 The geographical name identifier of the Lake Name 1 attribute value from the geographical name database.
Domain:  A geographical name identifier. The field is left blank when not applicable.
Lake ID 2 The geographical name identifier of the Lake Name 2 attribute value from the geographical name database.
Domain:  A geographical name identifier. The field is left blank when not applicable.
Lake Name 1 The official lake type geographical name from the geographical name database.
Domain:  A geographical name. The field is left blank when not applicable.
Lake Name 2 The official lake type geographical name from the geographical name database.
Domain:  A geographical name. The field is left blank when not applicable.
Name Date The date at which the geographical name(s) was (were) associated to its (their) geographical name identifier.
Domain:  A date in the format YYYYMMDD. If the month or the day is unknown, corresponding characters are left blank (e.g. 20060630, 200606, 2006). The field is left blank if unknown or not applicable.
NID A unique national identifier assigned to each object.
Domain:  A UUID.
Permanency Nature of the occurrence through time.
Domain:
Label Definition
-1 Unknown Impossible to determine.
1 Permanent Intended to exist or function for a long, indefinite period.
2 Intermittent Coming and going at intervals.
River ID 1 The geographical name identifier of the River Name 1 attribute value from the geographical name database.
Domain:  A geographical name identifier. The field is left blank when not applicable.
River ID 2 The geographical name identifier of the River Name 2 attribute value from the geographical name database.
Domain:  A geographical name identifier. The field is left blank when not applicable.
River Name 1 The official river type geographical name from the geographical name database.
Domain:  A geographical name. The field is left blank when not applicable.
River Name 2 The official river type geographical name from the geographical name database.
Domain:  A geographical name. The field is left blank when not applicable.
Water Definition The nature of a body of water defined according to its water velocity and usage.
Domain:
Label Definition
-1 Unknown Impossible to determine.
0 None None of the other values.
1 Canal An artificial body of water serving as a navigable waterway or to channel water.
4 Lake A natural and usually flat body of water.
5 Reservoir A wholly or partially manmade body of water for storing and/or regulating and controlling water.
6 Watercourse A natural body of water through which water may flow.
7 Tidal River A natural body of water in which flow and water surface elevation are affected by the tide.
8 Liquid Waste Liquid waste or discharge from an industrial complex.
9 Pond A body of standing water, usually smaller than a lake.
10 Side Channel A channel providing an alternative water way within a flowing body of water.
Object Metadata Link to the attributes described in the Object Metadata Attributes section.




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The NHN Work Unit Limit feature class is not part of the NHN model. However, this class is provided in all NHN distribution formats, therefore it is included in this catalogue.

Feature Class:
Name - (French name) Package Geometry
NHN Work Unit Limit - (Limite d'unité de travail RHN) N/A Area
Definition
Polygon delimiting an NHN dataset.

Attributes:
Attribute Name Attribute Definition
Dataset Name NHN dataset identifier.
Domain:  7-character code based on the naming convention of the Water Survey of Canada Sub-Sub-Drainage Areas (WSCSSDA) and/or the Fondamental Drainage Areas from the Atlas of Canada (FDAAC).
Edition The edition of the NHN Work Unit Limit.
Domain:  [1, ...] An integer number.
Province Code 1 Province or territory code where the NHN Work Unit is located.
Domain:
Label Definition
AB Alberta
BC British Columbia
MB Manitoba
NB New Brunswick
NL Newfoundland and Labrador
NS Nova Scotia
NT Northwest Territories
NU Nunavut
ON Ontario
PE Prince Edward Island
QC Quebec
SK Saskatchewan
YT Yukon Territory
Province Code 2 Province or territory code where the NHN Work Unit is located. The field is left blank if not applicable.
Domain:
Label Definition
AB Alberta
BC British Columbia
MB Manitoba
NB New Brunswick
NL Newfoundland and Labrador
NS Nova Scotia
NT Northwest Territories
NU Nunavut
ON Ontario
PE Prince Edward Island
QC Quebec
SK Saskatchewan
YT Yukon Territory
Province Code 3 Province or territory code where the NHN Work Unit is located. The field is left blank if not applicable.
Domain:
Label Definition
AB Alberta
BC British Columbia
MB Manitoba
NB New Brunswick
NL Newfoundland and Labrador
NS Nova Scotia
NT Northwest Territories
NU Nunavut
ON Ontario
PE Prince Edward Island
QC Quebec
SK Saskatchewan
YT Yukon Territory
Province Code 4 Province or territory code where the NHN Work Unit is located. The field is left blank if not applicable.
Domain:
Label Definition
AB Alberta
BC British Columbia
MB Manitoba
NB New Brunswick
NL Newfoundland and Labrador
NS Nova Scotia
NT Northwest Territories
NU Nunavut
ON Ontario
PE Prince Edward Island
QC Quebec
SK Saskatchewan
YT Yukon Territory
Validity Date Creation or revision date of the NHN Work Unit Limit.
Domain:  A date in the format YYYYMMDD. If the month or the day is unknown, the corresponding characters are left blank (e.g. 20060630, 200606, 2006). The whole field is left blank if unknown.
Version The version of the NHN Work Unit Limit.
Domain:  [1, ...] Un nombre entier.