As one of the cornerstones of the u s. It has many uses ranging from recreation to scientific analysis to emergency response.

Maps Gates Of The Arctic National Park Preserve U S National Park Service

Depending on latitude the area portrayed by the 7 5 minute series ranges from 49 to 64 square miles.

Us government topographic maps. The project was launched in late 2009 and the term us topo refers specifically to quadrangle topographic maps published in 2009 and later. Current generation topographic maps are created from digital gis databases and are branded us topo historic maps originally published as paper documents in the period. Building on the success of more than 130 years of usgs topographic mapping the us topo series is a new generation of maps of the american landscape.

Usgs topographic maps come in a variety of scales. Us topo topographic maps are produced by the national geospatial program of the u s. These are general use maps at medium scales that present elevation contour lines hydrography geographic place names and a variety of cultural features.

It takes about 57 000 7 5 minute maps to cover the 48 contiguous states. The most popular and the most detailed are the 7 5 minute or 1 24 000 scale 1 inch 2 000 feet quadrangle series. Geological survey s usgs national geospatial program the national map is a collaborative effort among the usgs and other federal state and local partners to improve and deliver topographic information for the nation.