-
Federal
USGS Governmental Unit Boundaries Overlay Map Service from The National Map
U.S. Geological Survey, Department of the Interior —
The USGS Governmental Unit Boundaries service from The National Map (TNM) represents major civil areas for the Nation, including States or Territories, counties (or... -
Federal
USGS Map Indices Overlay Map Service from The National Map
U.S. Geological Survey, Department of the Interior —
The USGS Map Indices service from The National Map (TNM) consists of 1x1 Degree, 30x60 Minute (100K), 15 Minute (63K), 7.5 Minute (24K), and 3.75 Minute grid polygons...