Map Data: USGS Historical Topos
February 20, 2024
This essay is the work of a dumb dinobaby. No smart software required.
The ESRI blog published “Access Over 181,000 USGS Historical Topographic Maps.” The map outfit teamed with the US Geological Survey to provide access to an additional 1,745 maps. The total maps in the collection is now 181,008.
The blog reports:
Esri’s USGS historical topographic map collection contains historical quads (excluding orthophoto quads) dating from 1884 to 2006 with scales ranging from 1:10,000 to 1:250,000. The scanned maps can be used in ArcGIS Pro, ArcGIS Online, and ArcGIS Enterprise. They can also be downloaded as georeferenced TIFs for use in other applications.
These data are useful. Maps can be viewed with ESRI’s online service called the Historical Topo Map Explorer. You can access that online service at this link.
If you are not familiar with historical topos, ESRI states in an ARCGIS post:
The USGS topographic maps were designed to serve as base maps for geologists by defining streams, water bodies, mountains, hills, and valleys. Using contours and other precise symbolization, these maps were drawn accurately, made mathematically correct, and edited carefully. The topographic quadrangles gradually evolved to show the changing landscape of a new nation by adding symbolization for important highways; canals; railroads; and railway stations; wagon roads; and the sites of cities, towns and villages. New and revised quadrangles helped geologists map the mineral fields, and assisted populated places to develop safe and plentiful water supplies and lay out new highways. Primary considerations of the USGS were the permanence of features; map symbolization and legibility; and the overall cost of compiling, editing, printing and distributing the maps to government agencies, industry, and the general public. Due to the longevity and the numerous editions of these maps they now serve new audiences such as historians, genealogists, archeologists, and people who are interested in the historical landscape of the U.S.
This public facing data service is one example of extremely useful information gathered by US government entities can be made more accessible via a public-private relationship. When I served on the board of the US National Technical Information Service, I learned that other useful information is available, just not easily accessible to US citizens.
Good work, ESRI and USGS! Now what about making that volcano data a bit easier to find and access in real time?
Stephen E Arnold, February 20, 2024
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