Layer: Residual Flows (ID: 23)

Name: Residual Flows

Display Field: ReferenceNo

Type: Feature Layer

Geometry Type: esriGeometryPoint

Description: <DIV STYLE="text-align:Left;font-size:12pt">Many resource consents contain a condition limiting the taking of water when a river or waterway is on restrictionA residual flow applies to specific consents that take water from a tributary of a main river. A residual flow recognises that a tributary stream often has different flow characteristics from the main river stem. It is set at the point of take on a case-by-case basis, to provide for the aquatic ecosystems and natural character of the source water body.Intended UseThe residual flow sites layer is intended to show the location of the monitoring sites associated with maintaining residual flows.Attribute InformationMonitoring Site information<UL STYLE="margin:0 0 0 0;padding:0 0 0 0;"><LI STYLE="margin:0 0 0 48;">SiteID – Unique identification number for this site in Environment Canterbury database systems</LI><LI STYLE="margin:0 0 0 48;">Waterway – name of the water feature that this site relates to for residual flow purposes</LI><LI STYLE="margin:0 0 0 48;">Location – name for the location that the monitoring is undertaken</LI><LI STYLE="margin:0 0 0 48;">RestrictionType – type of restriction (in this case Residual Flow restriction) that this site is used for monitoring.</LI><LI STYLE="margin:0 0 0 48;">ReferenceSystem – Environment Canterbury data management system that the monitoring site information is being managed within.</LI><LI STYLE="margin:0 0 0 48;">ReferenceNo – Internal ID for this site within the listed reference data management system</LI><LI STYLE="margin:0 0 0 48;">SiteAccount – Internal account for monitoring site.</LI><LI STYLE="margin:0 0 0 48;">GroupAccount – Monitoring group.</LI><LI STYLE="margin:0 0 0 48;">QARCode – Quality assurance code that describes the spatial accuracy of the site information. 1 = Differential GPS (advanced) or Geodetic Land Survey (1 - 2m); 2 = Standard handheld GPS (2 - 15m); 3 = Site visit (10 - 50m); 4 = Old Grid reference ±100m, no location sketch, or location not checked (50 - 300m); 5 = Proposed Location, should be within 50m (< 50m)</LI><LI STYLE="margin:0 0 0 48;">Altitude – Approximate altitude of the monitoring site (above mean sea level) relative to the datum listed in the AltitudeDatum field. Values where the data is missing or displays 0 represent sites where that information is not available.</LI><LI STYLE="margin:0 0 0 48;">AltitudeDatum – The vertical datum that the listed altitude value was recorded using. See <A href="https://www.linz.govt.nz/data/geodetic-system/datums-projections-and-heights/vertical-datums" STYLE="text-decoration:underline;">https://www.linz.govt.nz/data/geodetic-system/datums-projections-and-heights/vertical-datums</A> for more information about the vertical datums commonly used in New Zealand.</LI><LI STYLE="margin:0 0 0 48;">IsActive – Current status on whether a site is being used for residual flow monitoring. Records with this value set to No are not currently part of residual flow monitoring for consents.</LI><LI STYLE="margin:0 0 0 48;">CatchmentNo – unique identification number for the hydrological catchment that the monitoring site lies within. See <A href="https://opendata.canterburymaps.govt.nz/datasets/catchment-boundaries/explore" STYLE="text-decoration:underline;">https://opendata.canterburymaps.govt.nz/datasets/catchment-boundaries/explore</A> for more details.</LI><LI STYLE="margin:0 0 0 48;">CatchmentDesc – name used for hydrological catchment that the monitoring site lies within. Typically this is the name of water body that that the catchment area represents.</LI></UL>GIS Attributes<UL STYLE="margin:0 0 0 0;padding:0 0 0 0;"><LI STYLE="margin:0 0 0 48;">Spatial IDs: OBJECTID</LI><LI STYLE="margin:0 0 0 48;">Spatial Fields: SHAPE, NZTMX & NZTMY – Approximate location of monitoring site in New Zealand Transverse Mercator coordinates</LI><LI STYLE="margin:0 0 0 48;">LowFlowSource – Environment Canterbury data management system that the low flow site information is being managed within.</LI></UL></DIV>

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OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
Shape ( type: esriFieldTypeGeometry, alias: Shape )
SiteID ( type: esriFieldTypeSmallInteger, alias: SiteID )
Waterway ( type: esriFieldTypeString, alias: Waterway, length: 29 )
Location ( type: esriFieldTypeString, alias: Location, length: 40 )
RestrictionType ( type: esriFieldTypeString, alias: RestrictionType, length: 9 )
ReferenceSystem ( type: esriFieldTypeString, alias: ReferenceSystem, length: 200 )
ReferenceNo ( type: esriFieldTypeString, alias: ReferenceNo, length: 200 )
SiteAccount ( type: esriFieldTypeString, alias: SiteAccount, length: 10 )
GroupAccount ( type: esriFieldTypeString, alias: GroupAccount, length: 50 )
NZTMX ( type: esriFieldTypeInteger, alias: NZTMX )
NZTMY ( type: esriFieldTypeInteger, alias: NZTMY )
QARCode ( type: esriFieldTypeString, alias: QARCode, length: 200 )
Altitude ( type: esriFieldTypeDouble, alias: Altitude )
AltitudeDatum ( type: esriFieldTypeString, alias: AltitudeDatum, length: 100 )
IsActive ( type: esriFieldTypeString, alias: IsActive, length: 4 )
CatchmentNo ( type: esriFieldTypeInteger, alias: CatchmentNo )
CatchmentDesc ( type: esriFieldTypeString, alias: CatchmentDesc, length: 34 )
LowFlowSource ( type: esriFieldTypeString, alias: LowFlowSource, length: 10 )

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