There are different answers to this question for different products. In all cases, we must know what product you are addressing. Please read the following guidelines and email error reports to email@example.com:
US Topo maps (topographic maps published 2009-present)
Please include the following information:
- The map title, state, and date (from the title block in the lower right corner).
- Description of the error.
- Location of the error.
For location, coordinates are preferred in latitude/longitude, UTM, or USNG. Otherwise include a detailed description of the feature and its location so someone not familiar with the area can find it on the map. A screenshot image would be most helpful.
The US Topo project does not edit data and performs only limited data verification. Data sources include both government and non-government organizations. If errors are determined to be a source-data issue, they will be passed to the data owner. Unless there is a serious error, US Topo maps will not be reissued. The corrected data will be included when the map is remade in the regular 3-year cycle.
Historical Topographic Maps (topographic maps published before 2007)
USGS maps in the Historical Topographic Map Collection are historical documents and will not be revised or corrected. Historical USGS maps are often used as a base map for commercial map products that make modifications or add enhancements and put a current date on the map. The USGS has no control over those products.
Confirm that the application is owned by USGS. Send us the URL of the application and coordinates of the feature in question. If you don't know how to extract coordinates, send a screen-grab image and a description of its location, such as city and state, or direction and distance from a town or highway intersection.
Confirm that the data are from the USGS. Send us the dataset title and date from the metadata file or the download URL. Please provide the coordinates of the feature in question and any relevant feature attribute information. Screenshot images are helpful.