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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", "geometryType": "esriGeometryPolygon", "sourceSpatialReference": { "wkid": 4326, "latestWkid": 4326, "xyTolerance": 8.98315284119521E-9, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -400, "falseY": -400, "xyUnits": 9.999999999999999E8, "falseZ": 0, "zUnits": 1, "falseM": 0, "mUnits": 1 }, "copyrightText": "Source Agency: DCI (2018)\nCollection Agency: DCI (2016/17)\nMaintenance Agency: EAD\nCustodial Agency: EAD\nContact: EAD - Environment Information, Science & Outreach Management (EISOM)", "parentLayer": null, "subLayers": [], "minScale": 0, "maxScale": 0, "referenceScale": 0.0, "drawingInfo": { "renderer": { "type": "uniqueValue", "field1": "RuleID", "uniqueValueGroups": [ { "heading": "", "classes": [ { "label": "< 500 Fresh (WHO Standard)", "description": "< 500 Fresh (WHO Standard)", "symbol": { "type": "esriSFS", "style": "esriSFSSolid", "color": [ 0, 77, 168, 255 ], "outline": { "type": "esriSLS", "style": "esriSLSNull", "color": [ 110, 110, 110, 255 ], "width": 0 } }, "values": [ [ "1" ] ] }, { "label": "500 - <1,000 Fresh (Abu Dhabi Standard)", "description": "500 - <1,000 Fresh (Abu Dhabi Standard)", "symbol": { "type": "esriSFS", "style": "esriSFSSolid", "color": [ 0, 112, 255, 255 ], "outline": { "type": "esriSLS", "style": "esriSLSNull", "color": [ 110, 110, 110, 255 ], "width": 0 } }, "values": [ [ "2" ] ] }, { "label": "1,000 - <1,500 Fresh", "description": "1,000 - <1,500 Fresh", "symbol": { "type": "esriSFS", "style": "esriSFSSolid", "color": [ 102, 134, 185, 255 ], "outline": { "type": "esriSLS", "style": "esriSLSNull", "color": [ 110, 110, 110, 255 ], "width": 0 } }, "values": [ [ "3" ] ] }, { "label": "1,500 - 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