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The work begins with a detailed account of the climate of the western United States, founded on Smithsonian climate data and Powell's personal observations from his own extensive surveys of the region. [2] Powell describes the extent and potential of three main types of land in the region: irrigable lands, timber lands, and pasturage lands.
Köppen climate types of the United States. The climate of the United States varies due to changes in latitude, and a range of geographic features, including mountains and deserts. Generally, on the mainland, the climate of the U.S. becomes warmer the farther south one travels, and drier the farther west, until one reaches the West Coast.
The Köppen climate types of the United States, including the five inhabited U.S. territories) A map of average precipitation across the contiguous United States. Due to its large size and wide range of geographic features, the United States contains examples of nearly every global climate.
Image:Blank US Map with borders.svg, a blank states maps with borders. Image:BlankMap-USA.png, a map with no borders and states separated by transparency. Image:US map - geographic.png, a geographical map. On Wikimedia Commons, a free online media resource: commons:Category:Maps of the United States, the category for all maps with subcategories.
Topographic maps are also commonly called contour maps or topo maps. In the United States, where the primary national series is organized by a strict 7.5-minute grid, they are often called or quads or quadrangles. Topographic maps conventionally show topography, or land contours, by means of contour lines.
Shaded relief map of the United States, showing 10 geological provinces The richly textured landscape of the United States is a product of the dueling forces of plate tectonics, weathering and erosion. Over the 4.5 billion-year history of the Earth, tectonic upheavals and colliding plates have raised great mountain ranges while the forces of ...
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The United States contains varied landforms across its territory. These include: List of beaches in the United States; List of fjords of the United States; List of glaciers in the United States; List of islands of the United States; List of lakes of the United States; List of rivers of the United States; List of volcanoes in the United States