Whois & Analysis for topozone.com

Terrain or relief is an essential aspect of physical geography, and as such its portrayal presents a central problem in cartography, and more recently GIS and geovisualization.

The United States Geological Survey (USGS, formerly simply Geological Survey) is a scientific agency of the United States government.

The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it.

The organization has four major science disciplines, concerning biology, geography, geology, and hydrology.

The USGS is a fact-finding research organization with no regulatory responsibility.

In modern mapping, a topographic map is a type of map characterized by large-scale detail and quantitative representation of relief, usually using contour lines, but historically using a variety of methods.

Traditional definitions require a topographic map to show both natural and man-made features.

A topographic map is typically published as a map series, made up of two or more map sheets that combine to form the whole map.

A contour line is a line connecting places of equal elevation.

Satellite imagery consists of images of Earth or other planets collected by satellites.

Imaging satellites are operated by governments and businesses around the world.

Satellite imaging companies sell images under licence.

Images are licensed to governments and businesses such as Apple Maps and Google Maps.

The United States Forest Service (USFS) is an agency of the U.S. Department of Agriculture that administers the nation's 154 national forests and 20 national grasslands, which encompass.

Major divisions of the agency include the National Forest System, State and Private Forestry, Business Operations, and the Research and Development branch.

Managing approximately 25% of federal lands, it is the only major national land agency that is outside the U.S. Department of the Interior.