Representation, usually on a flat surface, of a part or whole of the Earth or other parts of the universe. Collections of maps linked digitally or bound together in a book are called atlases.
Maps of the ranges of tree species in North America compiled by Elbert Little and others were digitized for use in USGS vegetation and climate modeling studies. Can be downloaded as ArcView shapefiles and in PDF graphic files.
National seismic hazards maps, global seismic hazards map, predictive intensity maps, shaking hazards maps and probabilities for California, and a variety of fact sheets on earthquakes.
Links to charts of the Earth's magnetic field in different projections showing declination, inclination, and total, horizontal and vertical intensities plus references and note on limitations.
Overview of hydrologic unit maps adapted from USGS Water-Supply Paper 2294 giving description of hydrologic units, link to list of hydrologic units, paper maps and digital spatial data sets.
The USGS provides map-on-demand (MOD) printing for selected infrequently requested geologic and other theme map products providing high-quality paper-copy maps as needed. Site links to available map products with thumbnail views and how to order.
Links to maps of breeding distributions of bird species on grasslands and shrublands in the northern Great Plains. Maps can also be downloaded from *.zip files in HTML format.
Near-real-time maps of location, ground motion, and shaking intensity of earthquakes in California and Nevada for the past hour, past day, and past week and links to other earthquake information.
Links to maps of New Jersey showing nitrate levels, pesticides, Total Volatile Organic Compounds (VOCs), and radium in wells and land use of the 1970s.