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These Delaware DataMIL 7.5-minute topographic maps replace the USGS 7.5-minute Primary Map Series for the State of Delaware. In January 2008, copies of the maps were deposited to the University of Delaware Library Institutional Repository as the first in a series of an annual archived copies. Files are in Adobe PDF format.

The DataMIL Topo maps have retained the original Delaware USGS quadrangle names, although there is over edge of the quad grid to accommodate the common 36-inch width of large format printers/plotters. If you do not have access to a large format printer/plotter, you may wish to contact your nearest copy center with the ability to accommodate large format files.

Topographic maps of Delaware are generated every two weeks using the most current data and may be downloaded from the Delaware DataMIL.