Get Converting US Topo GeoPDF Layers To GeoTIFF Table Of Contents

US Topo is a digital topographic map based on the 1:24,000-scale quadrangle design containing orthoimagery, shaded relief, and data from the geographic themes of transportation, hydrography, elevation, boundaries, geographic names, structures, and land cover.

1:24,000 or 1/24,000). For example, the USGS publishes a series of topographic maps at a scale of 1:24,000 (also known as the 7.5 minute quadrangles). This scale means that 1 inch on the map is equal to a distance of 24,000 inches on the ground (2,000 feet).

US Topo maps are produced by the National Geospatial Program of the U.S. Geological Survey (USGS). First launched in 2009, US Topos combine the familiar look and feel of legacy paper USGS topographic maps with technological advances of the 21st century.

General topographical maps usually have scales ranging from 1:50000 to 1:250000. These are small-scale maps . In most countries, 1 :50000 maps are now available. You can use these for general planning of aquaculture development, including the planning of your fish-farm.

US Topo maps are updated on a three-year production cycle (maps covering one third of the country are updated each year).