How to Determine Latitude and Longitude from Topographic Maps

HOW TO DETERMINE LATITUDE AND LONGITUDE FROM TOPOGRAPHIC MAPS 

Latitude is the distance north or south of the equator. Longitude is the distance east or west of the prime meridian (Greenwich, Engiand). Latitude and longitude are measured in seconds, minutes, and degrees. 

To determine the latitude and longitude of your facility you will need a topographic map from United States Geological Survey (USGS). 

USGS maps used for determining latitude and longitude may be obtained from the USGS distribution center. These maps are available in both the 7.5 minute and 15 minute series. For maps of the United States, including Alaska, Hawaii, American Samoa, Guam, Puerto Rico, and the U.S. Virgin Islands, contact  

Branch of Distribution U.S. Geological Survey Box 25286 Federal Center Denver, CO 80225 

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Appendix F—How to Determine Latitude and Longitude from Topographic Maps. .. 99... 

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