Name: 1857 Structures

Display Field: Name

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Based on Herman Au's 1857 Map of Coloma, with additions made based upon deed descriptions. The map has been georeferenced by block, using extant Gold Rush structures as primary reference points. Reference structures include Bekeart's Gun Shop, Bell & Allen's Store, Shawl's Brick Block (footing extant), the Odd Fellows Hall, the Williams House, the Coloma Jail Ruins, and the Emmanuel Church.

Copyright Text: Ian Springer

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -13459606.4725
YMin: 4692206.0508
XMax: -13457022.4715
YMax: 4693897.4373
Spatial Reference: 102100 (3857)

Drawing Info:

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HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: FID

Unique ID Field:

Name : FID

IsSystemMaintained : True

Global ID Field:

Type ID Field:

Fields:

• FID (type: esriFieldTypeOID, alias: FID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• Id (type: esriFieldTypeInteger, alias: Id, SQL Type: sqlTypeOther, nullable: true, editable: true)
• Name (type: esriFieldTypeString, alias: Name, SQL Type: sqlTypeOther, length: 100, nullable: true, editable: true)
• Accuracy (type: esriFieldTypeString, alias: Accuracy, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
• Verified (type: esriFieldTypeString, alias: Verified, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
• Dimensions (type: esriFieldTypeInteger, alias: Dimensions, SQL Type: sqlTypeOther, nullable: true, editable: true)
• Condition (type: esriFieldTypeString, alias: Condition, SQL Type: sqlTypeOther, length: 100, nullable: true, editable: true)
• Material (type: esriFieldTypeString, alias: Material, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
• Descrip (type: esriFieldTypeString, alias: Descrip, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• Deed1 (type: esriFieldTypeString, alias: Deed1, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• Deed2 (type: esriFieldTypeString, alias: Deed2, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• Deed3 (type: esriFieldTypeString, alias: Deed3, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• Deed4 (type: esriFieldTypeString, alias: Deed4, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• Article1 (type: esriFieldTypeString, alias: Article1, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• Shape__Area (type: esriFieldTypeDouble, alias: Shape__Area, SQL Type: sqlTypeDouble, nullable: true, editable: false)
• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Templates:

Name: 1857 Structures
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 9/8/2026 8:37:22 PM

Schema Last Edit Date: 9/8/2026 8:37:22 PM

Data Last Edit Date: 9/8/2026 8:37:22 PM

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