Layers:

Layer: River Water Quality Modelled Current State (0)


Name: River Water Quality Modelled Current State

Display Field: NO3medState

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description:

This GIS layer has been produced by using the Northland river water quality current state predictive model developed by NIWA using Random Forest statistical method.

The uncertainty of model prediction is high for DRP, suspended fine sediment and E.coli, particularly in Aupouri, Herekino and Bream Bay Freshwater Management Unit (FMU) area.

For any water quality attribute this predictive model should always be viewed together with the current water quality state at the SOE monitoring sites.

Attribute field

streamOrde

Stream order

nzsegment

UID for river segment based on REC (River Environment Classification model)

NH4medState

Ammonia median - NPSFM band

NH4maxState

Ammonia max concentration (95th percentile) - NPSFM band

NO3medState

Nitrate median - NPSFM band

NO3maxState

Nitrate max concentration (95th percentile) - NPSFM band

DRPmedState

DRP median concentration - NPSFM band

DRPmaxState

DRP max concentration (95th percentile) - NPSFM band

ClarityState

Horizontal visual clarity (Suspended fine sediment) - NPSFM band

EcolMedState

E.coli median - NPSFM band

EcolMaxState

E.coli max concentration (95th percentile) - NPSFM band

Shape_Length

River segment length

The details of NIWA water quality model with its methodology, accuracy level and uncertainty can be found in the Northland water quality model by NIWA - Draft report.

Created: 22/01/2021



Copyright Text: NIWA, NRC

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: 1569849.4283
YMin: 5971623.9006
XMax: 1744110.7101
YMax: 6192385.6036
Spatial Reference: 2193 (2193)


Drawing Info:

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Object ID Field: OBJECTID

Unique ID Field:

Name : OBJECTID

IsSystemMaintained : True


Global ID Field:

Type ID Field:

Fields:
• OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• NO3medState (type: esriFieldTypeString, alias: Nitrate median - NPSFM band, SQL Type: sqlTypeOther, length: 10, nullable: true, editable: true)
• NO3maxState (type: esriFieldTypeString, alias: Nitrate max concentration (95th percentile) - NPSFM band, SQL Type: sqlTypeOther, length: 10, nullable: true, editable: true)
• NH4medState (type: esriFieldTypeString, alias: Ammonia median - NPSFM band, SQL Type: sqlTypeOther, length: 10, nullable: true, editable: true)
• NH4maxState (type: esriFieldTypeString, alias: Ammonia max concentration (95th percentile) - NPSFM band, SQL Type: sqlTypeOther, length: 10, nullable: true, editable: true)
• DRPmedState (type: esriFieldTypeString, alias: DRP median - NPSFM band, SQL Type: sqlTypeOther, length: 10, nullable: true, editable: true)
• DRPmaxState (type: esriFieldTypeString, alias: DRP max concentration (95th percentile) - NPSFM band, SQL Type: sqlTypeOther, length: 10, nullable: true, editable: true)
• EcolMedState (type: esriFieldTypeString, alias: E.coli median - NPSFM band, SQL Type: sqlTypeOther, length: 10, nullable: true, editable: true)
• EcolMaxState (type: esriFieldTypeString, alias: E.coli max concentration (95th percentile) - NPSFM band, SQL Type: sqlTypeOther, length: 10, nullable: true, editable: true)
• ClarityState (type: esriFieldTypeString, alias: Horizontal visual clarity (Suspended fine sediment) - NPSFM band, SQL Type: sqlTypeOther, length: 10, nullable: true, editable: true)
• streamOrde (type: esriFieldTypeInteger, alias: Stream Order, SQL Type: sqlTypeOther, nullable: true, editable: true)
• nzsegment (type: esriFieldTypeInteger, alias: REC UID, SQL Type: sqlTypeOther, nullable: true, editable: true)
• FMU (type: esriFieldTypeString, alias: Freshwater Management Unit, SQL Type: sqlTypeOther, length: 256, nullable: true, editable: true)
• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Templates:

Name: River Water Quality Modelled Current State
Description:
Drawing Tool: esriFeatureEditToolLine
Prototype:

Attributes:


Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 8/18/2021 2:16:22 AM

Schema Last Edit Date: 8/18/2021 2:16:22 AM

Data Last Edit Date: 8/18/2021 2:16:22 AM