Name: Groundwater Salinity 2017

Display Field: created_user

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Two areas of freshwater with low mineral content are found in Abu Dhabi Emirate:In the northeast, rainfall from the Hajjar Mountains recharges the aquifer and slowly flows towards the Arabian Gulf. The longer the water remains in the aquifer, the more time it has to dissolve minerals and interact with the rocks: In general, the water gets more saline as it flows towards the sea. Another area of low salinity is found north of Liwa, where recharge from rainfall is minimal and the resulting groundwater is older. Most of it entered the aquifer thousands of years ago, in a time with a more humid climate. Very slow groundwater flow, uniform sandy lithology, and a distinct vertical salinity gradient in the aquifer have kept the uppermost groundwater fresh for centuries. Along the coast in the west, as well as in the southeast, the groundwater table is very shallow. In these sabkha flats, the groundwater comes close to the surface and some of it evaporates. The dissolved minerals stay behind and lead to a further salinisation of the groundwater. Water in these regions can be as salty as 140,000 mg/L; that is more than three times as salty as the water of the Arabian Gulf.Field Descriptions:-OBJECTID:A unique, not null integer field used to uniquely identify rows in tables in a geodatabase.-Shape:Field which shows the stored geometry type created through ArcGIS (Point, Line, Polygon, Multipoint or Multipatch)-Classes:Consecutively numbered classes of Salinity (0-7)-Value_Max:Upper value of TDS [mg/L] for the selected, corresponding salinity class-Shape_Length:Represents the total length of a polygon's perimeter, in the units used by the feature class' coordinate system-Shape_Area:Represents the total area of a polygon, in square units of the linear distance unit used by the feature class' coordinate system-RuleID:Range of salinity class in mg/L for labeling purposes-Override:A BLOB field that stores feature-specific override to the representation rulesProcessing Steps: Geospatial TDS data from groundwater sampling has been interpolated using Kriging to create polygons showing the distribution of groundwater salinity in eight classes ranging from 0 to 50,000 mg/LResolution: n/aData Quality: data was QC checked for consistency

Service Item Id: 335f1c2b6ad14dfd801c2e8abda7b139

Copyright Text: Source Agency: DCI (2018) Collection Agency: DCI (2016/17) Maintenance Agency: EAD Custodial Agency: EAD Contact: EAD - Environment Information, Science & Outreach Management (EISOM)

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0.0

Max Scale: 0.0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: 51.58273163200005
YMin: 22.63162140000003
XMax: 56.010128733000045
YMax: 24.91124780000007
Spatial Reference: 4326  (4326)  LatestVCSWkid(0)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: RuleID
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
N/A
Default Label: N/A
UniqueValueInfos:
• Value: 1
  Label: < 500 Fresh (WHO Standard)
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [0, 77, 168, 255]
  Outline:
  Style: esriSLSNull
  Color: [110, 110, 110, 255]
  Width: 0
• Value: 2
  Label: 500 - <1,000 Fresh (Abu Dhabi Standard)
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [0, 112, 255, 255]
  Outline:
  Style: esriSLSNull
  Color: [110, 110, 110, 255]
  Width: 0
• Value: 3
  Label: 1,000 - <1,500 Fresh
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [102, 134, 185, 255]
  Outline:
  Style: esriSLSNull
  Color: [110, 110, 110, 255]
  Width: 0
• Value: 4
  Label: 1,500 - <4,000 Slightly Brackish
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [115, 178, 255, 255]
  Outline:
  Style: esriSLSNull
  Color: [110, 110, 110, 255]
  Width: 0
• Value: 5
  Label: 4,000 - <7,000 Medium Brackish
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [190, 232, 255, 255]
  Outline:
  Style: esriSLSNull
  Color: [110, 110, 110, 255]
  Width: 0
• Value: 6
  Label: 7,000 - <10,000 Strongly Brackish
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [233, 255, 190, 255]
  Outline:
  Style: esriSLSNull
  Color: [110, 110, 110, 255]
  Width: 0
• Value: 7
  Label: 10,000 - <25,000 Slightly Saline
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [217, 199, 86, 255]
  Outline:
  Style: esriSLSNull
  Color: [110, 110, 110, 255]
  Width: 0
• Value: 8
  Label: 25,000 - <50,000 Saline
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [213, 65, 70, 255]
  Outline:
  Style: esriSLSNull
  Color: [110, 110, 110, 255]
  Width: 0
Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
Supports Percentile Statistics: true
Supports Having Clause: true
Supports Count Distinct: true
Supports Time Relation: true
Supports Sql Format: false
Supports Query Analytic: true
Supports Query With Current User: true

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• Classes ( type: esriFieldTypeInteger, alias: Classes )
• Value_Max ( type: esriFieldTypeDouble, alias: Value_Max )
• RuleID ( type: esriFieldTypeInteger, alias: Rule ID , Coded Values: [1: < 500 Fresh (WHO Standard)] , [2: 500 - <1,000 Fresh (Abu Dhabi Standard)] , [3: 1,000 - <1,500 Fresh] , ...6 more... )
• SHAPE ( type: esriFieldTypeGeometry, alias: SHAPE )
• SHAPE.STArea() ( type: esriFieldTypeDouble, alias: SHAPE.STArea() )
• SHAPE.STLength() ( type: esriFieldTypeDouble, alias: SHAPE.STLength() )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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