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Service Description: The USGS Elevation Contours web feature service (WFS) from The National Map displays contours generated for the United States at various scales. Small-scale contours were created by USGS TNM from 1 arc-second data with 100-meter contours, and are visible at 1:600,000 and smaller scales. Medium-scale contours were created by USGS EROS from 1/3-arc-second data with 100-foot intervals, and are visible between 1:150,000 and 1:600,000. Additional medium-scale contours were created by USGS EROS from 1/3-arc-second data with 50-foot intervals, and are visible between 1:50,000 and 1:150,000. Large scale contours are updated every quarter, and are created by USGS TNM for the 7.5' 1:24,000-scale US Topo digital map series. These contours are derived from 1/3 arc-second or better resolution data, and are visible at scales 1:50,000 and larger. Large scale contour intervals are variable across the United States depending on complexity of topography, and as contours are generated per US Topo quadrangle, lines may not match across quad boundaries. The National Map download client allows free downloads of public domain contour data in either Esri File Geodatabase or Shapefile formats. The 3D Elevation Program (3DEP) provides elevation data for The National Map and basic elevation information for earth science studies and mapping applications. Scientists and resource managers use elevation data for global change research, hydrologic modeling, resource monitoring, mapping and visualization, and many other applications. For additional information on 3DEP, go to http://nationalmap.gov/3DEP/.

Map Name: Layers

Legend

All Layers and Tables

Dynamic Legend

Dynamic All Layers

Layers:

• Contours US 100 Foot (0)
  • Contours US 100 Foot Lines (1)
• Contours US 50 Foot (2)
  • Contours US 50 Foot Lines (3)
• Contours - Large Scale (4)
  • Contours Lines - Large Scale (5)

Description: Elevation

Copyright Text: USGS The National Map: 3D Elevation Program. Data Refreshed July, 2020.

Spatial Reference: 4326  (4326)


Single Fused Map Cache: false

Initial Extent:

XMin: -94.68900438714822
YMin: 31.675085210564472
XMax: -94.2643353704862
YMax: 31.823355684102598
Spatial Reference: 4326  (4326)

Full Extent:

XMin: -173.11972092819238
YMin: 17.681172491230498
XMax: -64.56569198243491
YMax: 71.38645513281853
Spatial Reference: 4326  (4326)

Units: esriDecimalDegrees

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

Document Info:

Title: USGS TNM Elevation – Contours
Author: U. S. Geological Survey - National Geospatial Program
Comments: See http://viewer.nationalmap.gov/help for assistance with TNM viewer, services, or metadata.
Subject: Large Scale USGS Topo Contours, visible at scales larger than 1:50,000
Category:
Keywords: a-16,ngda,contour,line,elevation,topography,topographic,terrain,relief,altitude,United States,US,NGP-TNM,REST,WMS
AntialiasingMode: Fast
TextAntialiasingMode: Force

Supports Dynamic Layers: true

MaxRecordCount: 1000

MaxImageHeight: 4096

MaxImageWidth: 4096

Supported Query Formats: JSON, geoJSON

Min Scale: 577791

Max Scale: 0

Supports Datum Transformation: true



Child Resources:   Info   Dynamic Layer

Supported Operations:   Export Map   Identify   QueryDomains   QueryLegends   Find   Return Updates