View In:   ArcGIS Online Map Viewer

Name: Contour_Tiles_2018

Display Field: section

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This dataset represents the tiled grid used for processing and organizing the elevation contours covering Napa County at a 2-foot interval. Contour extents were clipped such that they extend 100-ft. beyond the county boundary.</SPAN></P><P><SPAN>Elevation data was derived from bare-earth surface digital elevation models (DEMs) created from LiDAR data flown in 2018 in response to the widespread 2017 fires in Northern California as part of ongoing nationwide 3DEP (U.S. Geological Survey 3D Elevation Program) efforts.</SPAN></P><P><SPAN>In limited areas, located along the western edge of the county boundary, supplemental DEMs were acquired from other sources to fill in gaps in the 3DEP data. Use of this supplemental data was negligible, totaling 24 acres out of 507,475 acres countywide (0.005% of total land area).</SPAN></P><P><SPAN>All DEM tiles (n=41) were merged into a single mosaic. Due to computing limitations, the mosaic was cut into three sections (north, central, and south) of roughly equal size for processing purposes. Two-foot contour lines were generated for each section, then further divided into 1-mile x 1-mile tiles, for a total or 886 tiles.</SPAN></P><P><SPAN>For metadata or details bout the contours themselves, see the GIS files themselves.</SPAN></P></DIV></DIV></DIV>

Service Item Id: dec4984aaa5744fda226bd9b1a9984a9

Copyright Text: Napa County Planning, Building, and Environmental Services Department, 2022

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

Extent:

XMin: 6376772.591725394
YMin: 1812888.4729664773
XMax: 6545732.5917312205
YMax: 2076888.472852558
Spatial Reference: 102642  (2226)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSFSSolid
Color: [255, 190, 190, 0]
Outline:
Style: esriSLSSolid
Color: [0, 92, 230, 255]
Width: 1
Label: N/A
Description: N/A
Transparency: 0
Labeling Info:
Label Placement: esriServerPolygonPlacementAlwaysHorizontal
Label Expression: N/A
Use Coded Values: true
Symbol:
Color: [0, 0, 0, 255]
Background Color: N/A
Outline Color: N/A
Vertical Alignment: bottom
Horizontal Alignment: left
Right to Left: false
Angle: 0
XOffset: 0
YOffset: 0
Size: 10
Font Family: Tahoma
Font Style: normal
Font Weight: normal
Font Decoration: none

Min. Scale: 167652.42041705234
Max. Scale: 0.0

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: false
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: true
Supports Returning Geometry Centroid: false
Supports Binning LOD: true
Supports Query With LOD Spatial Reference: true

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field:

Fields:

• objectid ( nullable: false, defaultValue: null, editable: false, length: 4, type: esriFieldTypeOID, modelName: objectid, alias: OBJECTID )
• id ( modelName: id, nullable: true, editable: true, defaultValue: null, alias: id, type: esriFieldTypeInteger )
• left_ ( modelName: left_, nullable: true, editable: true, defaultValue: null, alias: left, type: esriFieldTypeDouble )
• top_ ( modelName: top_, nullable: true, editable: true, defaultValue: null, alias: top, type: esriFieldTypeDouble )
• right_ ( modelName: right_, nullable: true, editable: true, defaultValue: null, alias: right, type: esriFieldTypeDouble )
• bottom ( modelName: bottom, nullable: true, editable: true, defaultValue: null, alias: bottom, type: esriFieldTypeDouble )
• section ( modelName: section, nullable: true, editable: true, defaultValue: null, length: 25, alias: Section, type: esriFieldTypeString )
• column_ ( modelName: column_, nullable: true, editable: true, defaultValue: null, length: 3, alias: Column, type: esriFieldTypeString )
• row ( modelName: row, nullable: true, editable: true, defaultValue: null, length: 3, alias: Row, type: esriFieldTypeString )
• tile ( modelName: tile, nullable: true, editable: true, defaultValue: null, length: 5, alias: Tile, type: esriFieldTypeString )
• SHAPE__Length ( virtual: true, nullable: true, editable: false, defaultValue: null, alias: SHAPE__Length, type: esriFieldTypeDouble )
• SHAPE__Area ( virtual: true, nullable: true, editable: false, defaultValue: null, alias: SHAPE__Area, type: esriFieldTypeDouble )

Templates:

• Name: Contour_Tiles_2018
  Description:
  Prototype:
  column_: null
  right_: null
  bottom: null
  tile: null
  left_: null
  section: null
  row: null
  id: null
  top_: null
  
  Drawing Tool: esriFeatureEditToolPolygon

Capabilities: Query

Sync Can Return Changes: true

Is Data Versioned: false

Supports Rollback On Failure: true

Supports ApplyEdits With Global Ids: false

Supports ApplyEdits By Upload Id: true

Supports Query With Historic Moment: false

Supports Coordinates Quantization: true

Supported Operations:   Query   Query Attachments   Query Analytic   Query Top Features   Calculate   Append   Validate SQL   Generate Renderer   Return Updates   Metadata