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Service Description: The USGS Medium Scale Shaded Relief from The National Map is a cached tile service that contains shaded relief elevation layers derived from the National Elevation Dataset (NED). The NED was developed by merging the highest resolution, best-quality elevation data available across the United States into a seamless raster format. Medium scale shaded relief represents NED data with a horizontal grid spacing of 1 arc-second (approximately 30 meters) as if it were a surface illuminated by a light source 45 degrees above the northwest horizon. Medium scale shaded relief can be viewed from 1:4.6M to 1:578,000 in The National Map viewer. Go to http://ned.usgs.gov/ and http://extract.cr.usgs.gov/distmeta/servlet/gov.usgs.edc.MetaBuilder?TYPE=HTML&DATASET=NED for more information on 1 arc-second NED.

Map Name: NED

Layers:

• NED_1_16 (0)
• NED_1_8 (1)
• NED_1_4 (2)
• NED_1_AK_16 (3)
• NED_1_AK_8 (4)
• NED_1_AK_4 (5)

Description:

Copyright Text:

Spatial Reference: 102113

Single Fused Map Cache: true

Tile Info:

• Height: 256
  
• Width: 256
  
• DPI: 96
  
• Levels of Detail: (# Levels: 4)
  
• Level ID: 0 [Start Tile, End Tile]
  Resolution: 1222.99245256249
  Scale: 4622324.434309
• Level ID: 1 [Start Tile, End Tile]
  Resolution: 611.49622628138
  Scale: 2311162.217155
• Level ID: 2 [Start Tile, End Tile]
  Resolution: 305.748113140558
  Scale: 1155581.108577
• Level ID: 3 [Start Tile, End Tile]
  Resolution: 152.874056570411
  Scale: 577790.554289
• Format: PNG32
• Compression Quality: 0
• Origin:
  X: -20037508.342787
  Y: 20037508.342787
  
• Spatial Reference: 102113

Intial Extent:

XMin: -10907969.9129186
YMin: 4927189.50113418
XMax: -10393248.4375996
YMax: 5255808.722608
Spatial Reference: 102113

Full Extent:

XMin: -20601773.0994368
YMin: -2281435.19273253
XMax: -6543445.4329462
YMax: 12216172.0125243
Spatial Reference: 102113

Units: esriMeters

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

Document Info:

• Title: TNM Medium Scale Shaded Relief
• Author: U.S. Geological Survey – National Geospatial Program
• Comments: See http://viewer.nationalmap.gov/help for assistance with The National Map viewer, services or metadata.
• Subject:
• Category:
• Keywords:

Supported Interfaces:   REST   SOAP   WMS

Supported Operations:   Export Map   Identify   Find   Generate KML