Send a comment on this item to LII: Send a comment on this item to LII staff, who on weekdays will usually reply within 24 hours. Topographic Map Symbols This online guide has three brief descriptive sections: "What is a Topographic Map?"; "Reading Topographic Maps"; and "Topographic Map Information," which includes information on buying topo maps. Explains map symbols for elevation; boundaries; land surface features; water features; buildings and related features; and roads, railroads, and transmission lines and pipelines. From the U.S. Geological Survey (USGS). http://egsc.usgs.gov/isb/pubs/booklets/symbols/reading.html Asterisk * indicates required field. Your Name Your Email Address * We will not sell or provide your email address to anyone else. Comment * Enter the verification code as it is shown in the box below. This helps prevent automated submissions. *