View In:   ArcGIS Online Map Viewer

Name: SRK_Munic_Landslide_Hazard

Display Field: MUNICNAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This dataset contains municipal‑level landslide hazard values derived from a composite susceptibility model built using DEM‑derived slope, long‑term rainfall patterns, and soil/geological characteristics. A weighted overlay was used to generate the regional landslide susceptibility raster, reflecting the combined influence of steep gradients, high precipitation, and weak or weathered soil conditions on slope instability. Zonal Statistics were applied to calculate susceptibility metrics for each municipality, with the median value selected as the most robust indicator of overall landslide hazard. The resulting values were joined to the municipal boundary layer and classified into categorical hazard levels for integration into multi‑hazard assessments, geotechnical risk reduction strategies, and development planning processes. 

Service Item Id: 982857dcb0774327b9468c0ed6e20f76

Copyright Text: Prepared by: Herman Booysen, Principal GIS Scientist / Associate Partner Organisation: SRK Consulting

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports ValidateSQL: true

Supports Calculate: true

Supports Datum Transformation: true

Extent:

XMin: 28.873479941000028
YMin: -31.082629940999936
XMax: 32.944984945000044
YMax: -26.804419936999977
Spatial Reference: 4148  (4148)

Drawing Info:

Renderer:
Class Breaks Renderer:
Field: Landslide
Min. Value: 1.0
ClassBreakInfos:
• Class Maximum Value: 1
  Label: 1
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [245, 245, 0, 255]
  Outline:
  Style: esriSLSSolid
  Color: [110, 110, 110, 255]
  Width: 0
• Class Maximum Value: 3
  Label: 2 - 3
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [245, 122, 0, 255]
  Outline:
  Style: esriSLSSolid
  Color: [110, 110, 110, 255]
  Width: 0
• Class Maximum Value: 5
  Label: 4 - 5
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [245, 0, 0, 255]
  Outline:
  Style: esriSLSSolid
  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: true
Supports Returning Geometry Centroid: true
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: false
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:

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID_1, editable: false, nullable: false, defaultValue: null, modelName: OBJECTID )
• PROVINCE ( type: esriFieldTypeString, alias: PROVINCE, editable: true, nullable: true, length: 50, defaultValue: null, modelName: PROVINCE )
• CAT2 ( type: esriFieldTypeString, alias: CAT2, editable: true, nullable: true, length: 254, defaultValue: null, modelName: CAT2 )
• CAT_B ( type: esriFieldTypeString, alias: CAT_B, editable: true, nullable: true, length: 150, defaultValue: null, modelName: CAT_B )
• MUNICNAME ( type: esriFieldTypeString, alias: MUNICNAME, editable: true, nullable: true, length: 100, defaultValue: null, modelName: MUNICNAME )
• DISTRICT ( type: esriFieldTypeString, alias: DISTRICT, editable: true, nullable: true, length: 25, defaultValue: null, modelName: DISTRICT )
• DISTRICT_N ( type: esriFieldTypeString, alias: DISTRICT_N, editable: true, nullable: true, length: 100, defaultValue: null, modelName: DISTRICT_N )
• DATE ( type: esriFieldTypeDate, alias: DATE, editable: true, nullable: true, length: 8, defaultValue: null, modelName: DATE )
• Landslide ( type: esriFieldTypeInteger, alias: Landslide, editable: true, nullable: true, defaultValue: null, modelName: Landslide )
• Shape__Area ( type: esriFieldTypeDouble, alias: Shape.STArea(), editable: false, nullable: true, defaultValue: null, modelName: Shape.STArea(), required: true )
• Shape__Length ( type: esriFieldTypeDouble, alias: Shape.STLength(), editable: false, nullable: true, defaultValue: null, modelName: Shape.STLength(), required: true )

Templates:

• Name: SRK_Munic_Landslide_Hazard
  Description:
  Prototype:
  Landslide: null
  DATE: null
  PROVINCE: null
  CAT2: null
  CAT_B: null
  MUNICNAME: null
  DISTRICT: null
  DISTRICT_N: null
  
  Drawing Tool: esriFeatureEditToolPolygon

Capabilities: Query,Create,Update,Delete,Uploads,Editing

Sync Can Return Changes: false

Is Data Versioned: false

Supports Rollback On Failure: true

Supports ApplyEdits With Global Ids: false

Supports Query With Historic Moment: false

Supports Coordinates Quantization: true

Child Resources:   Field Groups   Contingent Values

Supported Operations:   Query   Query Analytic   Apply Edits   Add Features   Update Features   Delete Features   Calculate   Validate SQL   Generate Renderer   Return Updates   Iteminfo   Thumbnail   Metadata   Update Metadata