View Footprint In:
The USGS Elevation Contours service from The National Map (TNM) consists of contours generated for the conterminous United States from 1- and 1/3 arc-second elevation data. Small scale contours derived from 1 arc-second data are displayed at scales ranging from 1:577K to 1:72K in The National Map viewer. Contour intervals are 100 foot between 1:577K and 1:144K, and 50 foot at 1:72K. Large scale contours derived from 1/3 arc-second data are displayed at 1:50K (and larger). Large scale contour intervals are variable across the United States depending on complexity of topography. The National Map viewer 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/.
All Layers and Tables
Dynamic All Layers
USGS The National Map: 3D Elevation Program
Single Fused Map Cache:
Supported Image Format Types:
Title: USGS TNM Elevation – Contours
Supports Dynamic Layers:
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
Keywords: a-16,ngda,contour,line,elevation,topography,topographic,terrain,relief,altitude,United States,US,NGP-TNM,REST,WMS
Supported Query Formats: