Standardized layout of map collar and traditional reference system (latitude/longitude & U.S.Same extents as the popular 7.5-minute, 1:24,000-scale* quadrangle maps released 1947 - 2006 *scale varies in Alaska & Puerto Rico.Characteristics Common to US Topo and Traditional USGS Topographic Maps The most up-to-date status of US Topo map production for the current year. Please visit The National Map Viewer with the US Topo Availability service enabled to view exact publish dates and access the latest US Topos.
