Contour Maps

Contour Maps. The Historical Topographic Map Collection (HTMC) is the set of scanned images of USGS topographic quadrangle maps originally published as paper documents in the period 1884-2006 Step 3: Use the Contour Map If 3D trees or buildings hide the contours, uncheck 3D buildings in the left-side Layers panel


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The mobile app has GPS integration allowing you to see your real-time location on the map and is convenient for accessing maps on the go. Please note, as for now, the drawing below is square and you may want to stretch it to cover the actual area in a map.

Visit Historical Topographic Maps - Preserving the Past for more information. The Historical Topographic Map Collection (HTMC) is the set of scanned images of USGS topographic quadrangle maps originally published as paper documents in the period 1884-2006 Large scale contour intervals are variable across the United States depending on complexity.

. USGS topographic maps fall into three primary product categories: 1 TopoExport - Your tool to export highly detailed topography

. Visit Historical Topographic Maps - Preserving the Past for more information. Please note, as for now, the drawing below is square and you may want to stretch it to cover the actual area in a map.