Name: Subwatersheds (2 km buffer of City limit)

Display Field: COL_Subwatershed

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: City of London Subwatersheds represent drainage areas where water flows into bodies of water or watercourses within or nearby the City of London. The subwatersheds are derived from adjacent watershed data (administered by regional conservation authorities) and storm drain analysis (see description below). The three conservation authorities (CA) having jurisdiction in the City of London include: Kettle Creek CA (Dodd, Upper Kettle Creeks), Lower Thames Valley CA (Sharon Creek), and Upper Thames River CA (remaining subwatersheds). Fansawe Reservoir, Central London, Downstream Thames and South Thames are not actual subwatersheds, rather they are subwatershed groupings along the river corridor for management purposes. Assumptions on individual lot drainage were made without detailed subdivision grading plan information.Boundary Creation - Generally speaking, in the urban portion of the City, subwatershed boundaries were determined using the Minor Flow stormwater system controlled by storm sewers (storm road grates and subsurface drainage pipes). In the rural portion of the City where stormwater sewers do not occur, subwatershed boundaries are derived by contours illustrating landscape topography. A combination of City “sewershed” mapping and CA “subwatershed” mapping were used to complete these subwatershed maps.

Copyright Text: Planning, Environmental & Engineering Services - Envirnmental Programs; Geomatics

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Supported Query Formats: JSON, geoJSON, PBF

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Extent:

XMin: 466138.8828999996
YMin: 4739394.805
XMax: 493254.4763000002
YMax: 4770944.957
Spatial Reference: 26917  (26917)  LatestVCSWkid(0)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: COL_Subwatershed
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
N/A
Default Label: N/A
UniqueValueInfos:
• Value: Dingman Creek
  Label: Dingman Creek
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [207, 155, 187, 255]
  Outline:
  N/A
• Value: Dodd Creek
  Label: Dodd Creek
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [156, 214, 161, 255]
  Outline:
  N/A
• Value: Downstream Thames
  Label: Downstream Thames
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [164, 163, 191, 255]
  Outline:
  N/A
• Value: Fanshawe Reservoir
  Label: Fanshawe Reservoir
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [188, 194, 138, 255]
  Outline:
  N/A
• Value: Medway Creek
  Label: Medway Creek
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [151, 152, 207, 255]
  Outline:
  N/A
• Value: Oxbow Creek
  Label: Oxbow Creek
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [178, 212, 194, 255]
  Outline:
  N/A
• Value: Pottersburg Creek
  Label: Pottersburg Creek
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [201, 151, 147, 255]
  Outline:
  N/A
• Value: Sharon Creek
  Label: Sharon Creek
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [199, 204, 173, 255]
  Outline:
  N/A
• Value: South Thames
  Label: South Thames
  Description: N/A
  Symbol:
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  Color: [147, 186, 207, 255]
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• Value: Stoney Creek
  Label: Stoney Creek
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [157, 194, 161, 255]
  Outline:
  N/A
• Value: Upper Kettle Creek
  Label: Upper Kettle Creek
  Description: N/A
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  Color: [214, 189, 165, 255]
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• Value: Waubuno Creek
  Label: Waubuno Creek
  Description: N/A
  Symbol:
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  Color: [207, 174, 186, 255]
  Outline:
  N/A
• Value: Wye Creek
  Label: Wye Creek
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [145, 201, 197, 255]
  Outline:
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Transparency: 0
Labeling Info:

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Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• GIS_ID ( type: esriFieldTypeInteger, alias: Subwatershed ID )
• COL_Subwatershed ( type: esriFieldTypeString, alias: Subwatershed (City of London), length: 50 )
• UTRCA_Watershed ( type: esriFieldTypeString, alias: Watershed (UTRCA), length: 50 )
• Source ( type: esriFieldTypeString, alias: Oriiginal Source, length: 100 )
• Area_Ha ( type: esriFieldTypeDouble, alias: Area (Ha ±) )
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Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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