Maps - Topographic Maps Carousel
These are general-use maps at medium scales that present elevation (contour lines), hydrography, geographic place names, and a variety of cultural features. 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 1884-2006 are available as scanned images.
Grayscale Scanned 100K USGS Quadrangles
View topographic and bathymetric contour data and simulate Shawnee (Twin Lakes) Reservoir inundation areas for selected (and real-time) water-surface elevations.
Funding partners: City of Shawnee
All data collected during this project will be available online in the USGS National Water Information System (NWIS).
All data collected and analyzed by the USGS will be archived in the USGS National Water Information System (NWIS) database
Georgia Augusta Richmond County Groundwater Level Network
The USGS and EPA project will be conducted at the North Carolina State University (NCSU) Lake Wheeler Road Field Laboratory (LWRFL) in Wake County, North Carolina. The LWRFL is an agricultural site used for both research and teaching purposes. The farm contains both a swine facility and a dairy facility with each having two animal-waste storage lagoons.
The Roanoke River Near Roanoke, Virginia
This map shows the location of stream gages where the water level is currently at or above flood stage (depicted as a black triangle) or at high flow (depicted as blue circles) The high flow conditions are expressed as percentiles that compare the current (i.e., within the past several hours) instantaneous flow value to historical daily mean flow values
This map is based on data from more than 70 raingages operated by the U.S. Geological Survey in cooperation with the City of Charlotte and Mecklenburg County as part of the Flood Information and Notification System (FINS).
US Topo maps are modeled on the familiar 7.5-minute, 1:24,000-scale quadrangle maps of the period 1947-1992, but are mass-produced from national GIS databases on a 3-year cycle.The maps are layered PDF documents with geospatial extensions. They are downloadable free of charge through several interfaces.
This is the primary search and download application for USGS topographic maps and base-layer GIS data. The same topographic maps are also downloadable through other interfaces.
USGS topographic maps originally published on paper in the period 1884-2006 have been scanned and published as PDF documents. This collection is of topographic quadrangle maps with scales between 1:10,000 and 1:250,000. These historic documents are downloadable free of charge through several interfaces.