Name: Bedrock_Aquifer_Vulnerability

Display Field: NAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: The Colorado Department of Public Health and Environment (CDPHE) Tracking program collaborated with the Water Quality Control Division (WQCD), OPS and the Colorado Geologic Survey (CGS) to create an atlas of groundwater vulnerability. The Groundwater Vulnerability Tool is comprised of datasets representing potential impacts related to groundwater quality.Estimated groundwater aquifer vulnerability. Based on SWAP program GW_PhysicalSetting_scores. These points were jittered using a random direction and approximately 0.5 mile offset. Jittered points were then run through IDW with a cell size of 6436 meters (~4 miles) and a variable search using 12 points or 6436 meters. IDW output raster was processed using the Math>Int tool to create integer values from random float type. Calculate gridcodes based on weighted scores from oringinal dataset. Some accuracy in vulnerabilty was lost here in rounding. Using the Int output the raster could be transformed to a polygon. The output GW_PhysicalSetting vulnerability IDW output polygon was clipped to the boundaries of the bedrock aquifers. Finally, the clipped IDW output was spatially joined to the original bedrock aquifer file in order to get aquifer designations and ancillary bedrock aquifer info.

Copyright Text: Groundwater Vulnerability Tool built by: Eric Brown Colorado Department of Public Health and Environment Center for Health and Environmental Data Environmental Public Health Tracking Program ericm.brown@state.co.us (303) 692-3630

Default Visibility: true

MaxRecordCount: 10000

Supported Query Formats: JSON, geoJSON

Min Scale: 5000000

Max Scale: 10000

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: -1.21405240944E7
YMin: 4438140.927299999
XMax: -1.13592244136E7
YMax: 5012812.4690999985
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Class Breaks Renderer:
Field: gridcode
Min. Value: 15.0
ClassBreakInfos:
• Class Maximum Value: 16
  Label: Low
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [0, 97, 0, 255]
  Outline:
  Style: esriSLSNull
  Color: [110, 110, 110, 255]
  Width: 0
• Class Maximum Value: 22
  Label: Moderately Low
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [122, 171, 0, 255]
  Outline:
  Style: esriSLSNull
  Color: [110, 110, 110, 255]
  Width: 0
• Class Maximum Value: 29
  Label: Moderate
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [255, 255, 0, 255]
  Outline:
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  Color: [110, 110, 110, 255]
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• Class Maximum Value: 36
  Label: Moderately High
  Description:
  Symbol:
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  Outline:
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• Class Maximum Value: 42
  Label: High
  Description:
  Symbol:
  Style: esriSFSSolid
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  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

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID_1 ( type: esriFieldTypeOID, alias: OBJECTID_1 )
• OBJECTID ( type: esriFieldTypeInteger, alias: OBJECTID )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• Id ( type: esriFieldTypeInteger, alias: Id )
• gridcode ( type: esriFieldTypeInteger, alias: gridcode )
• FID_1 ( type: esriFieldTypeInteger, alias: FID_1 )
• AREA ( type: esriFieldTypeDouble, alias: AREA )
• PERIMETER ( type: esriFieldTypeDouble, alias: PERIMETER )
• AQUIFER_ ( type: esriFieldTypeInteger, alias: AQUIFER_ )
• AQUIFER_ID ( type: esriFieldTypeInteger, alias: AQUIFER_ID )
• ACRES ( type: esriFieldTypeDouble, alias: ACRES )
• HECTARES ( type: esriFieldTypeDouble, alias: HECTARES )
• NAME ( type: esriFieldTypeString, alias: NAME, length: 50 )
• Vulnerability ( type: esriFieldTypeString, alias: Vulnerability, length: 50 )

Supported Operations:   Query   Query Attachments   Generate Renderer   Return Updates

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