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Service Description:

2015 Orthophoto - This document describes the processes used to create the orthoimagery data produced for the District of Columbia from 2015 digital aerial photography.  It was flown in mid to Late April, completed on April 24, 2015.

DUE TO THE LOW ALTITUDE FLOWN TO CAPTURE THE COMPLETE IMAGERY FOR THE 2015 SENSOR FLIGHT,  THERE IS INCOMPLETE AERIAL PHOTOGRAPHY COVERAGE AROUND THE WHITE HOUSE AND CAPITOL.  FOR THESE AREAS, 2013 IMAGERY WAS MERGED IN USING STREET CENTERLINES TO DEFINE THE 2013 MERGE AREAS TO MINIMIZE DISTORTION OF FEATURES.. 

The project area covers the entire District of Columbia which is approximately 69 square miles. The digital imagery was used to create natural color digital orthophotography with 8cm pixel resolution. The final orthophotography deliverable products for this project consist of 328 ortho tiles at a scale of 1 to 2400. The tile dimensions are 800 meters by 800 meters. A corresponding MrSid image was created by mosaicking the 328 ortho tiles together and compressing the image using an 80 to 1 compression ration. All DC GIS data is stored and exported in Maryland State Plane coordinates NAD 83 meters.

METADATA CONTENT IS IN PROCESS OF VALIDATION AND SUBJECT TO CHANGE.

Map Name: Ortho 2015

Legend

All Layers and Tables

Layers:

• Ortho 2015 (0)

Description:

Copyright Text: DC GIS

Spatial Reference: 26985  (26985)


Single Fused Map Cache: true

Tile Info:

• Height: 512
• Width: 512
• DPI: 120
• Levels of Detail: 11
  • Level ID: 0 [ Start Tile, End Tile ]
  • Resolution: 63.50012700025401
  • Scale: 300000
  • Level ID: 1 [ Start Tile, End Tile ]
  • Resolution: 42.33341800016934
  • Scale: 200000
  • Level ID: 2 [ Start Tile, End Tile ]
  • Resolution: 21.16670900008467
  • Scale: 100000
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  • Scale: 25000
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  • Resolution: 2.54000508001016
  • Scale: 12000
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  • Resolution: 1.27000254000508
  • Scale: 6000
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  • Resolution: 0.63500127000254
  • Scale: 3000
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  • Scale: 1500
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  • Resolution: 0.21166709000084669
  • Scale: 1000
  • Level ID: 10 [ Start Tile, End Tile ]
  • Resolution: 0.10583354500042334
  • Scale: 500
• Format: MIXED
• Compression Quality: 75.0
• Origin: X: 379605.402
  Y: 148256.304
  
• Spatial Reference: 26985  (26985)
  

Storage Info:

• Storage Format: esriMapCacheStorageModeCompactV2
• Packet Size: 128

Initial Extent:

XMin: 365473.78337961773
YMin: 114621.33513968863
XMax: 426584.09443388705
YMax: 157778.66486031137
Spatial Reference: 26985  (26985)

Full Extent:

XMin: 389400
YMin: 124200
XMax: 408600
YMax: 148200
Spatial Reference: 26985  (26985)

Units: esriMeters

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

Document Info:

Title: Ortho 2015
Author:
Comments:
Subject:
Category:
Keywords: aerial photography,orthophoto,planimetrics,District of Columbia,ortho,DC,D.C.,Washington,D.C.,Orthophotography,Planning,United States of America (USA),Imagery,Orthos,Aerial Photography,imageryBaseMapsEarthCover
AntialiasingMode: None
TextAntialiasingMode: Force

Supports Dynamic Layers: false

MaxRecordCount: 1000

MaxImageHeight: 4096

MaxImageWidth: 4096

Supported Query Formats: JSON, geoJSON, PBF

Supports Query Data Elements: true

Min Scale: 300000

Max Scale: 500

Supports Datum Transformation: true



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