Railroads and terrain

map of the region showing hills and rail lines

Historical rail lines and terrain around Baltimore, Washington, and the Potomac River.

A work in progress.

Sources

Railroad data

USGS National Transportation Dataset, OpenStreetMap (CC BY-SA 2.0), and U.S. Railroads, 1826–1911, by Jeremy Atack. The OSM data includes extracts from older versions of the database.

Other data sources

NASADEM 30m, USGS National Boundary Dataset, and USGS National Hydrography Dataset — NHD and NHD Plus HR.