Search results
Results from the WOW.Com Content Network
Title page of J.W. Powell's 1879 Report on the Lands of the Arid Region of the United States. Report on the Lands of the Arid Region of the United States is a scientific report and policy recommendation written by American explorer, geologist, and anthropologist John Wesley Powell, and first published in 1878. The work sought to create an ...
The separately defined western arid regions of North America are continental regions of aridity based on available water in addition to rain shadow-diminished rainfall [3] and which have many non-desert shrub-steppe (EPA) and xeric shrublands (WWF) in addition to desert ecosystems and ecoregions.
The Ohio water resource region is one of 21 major geographic areas, or regions, in the first level of classification used by the United States Geological Survey to divide and sub-divide the United States into successively smaller hydrologic units. These geographic areas contain either the drainage area of a major river, or the combined drainage ...
Watersheds of North America are large drainage basins which drain to separate oceans, seas, gulfs, or endorheic basins. There are six generally recognized hydro-logical continental divides which divide the continent into seven principal drainage basins spanning three oceans ( Arctic , Atlantic and Pacific ) and one endorheic basin.
The Great Lakes Basin consists of the Great Lakes and the surrounding lands of the states of Illinois, Indiana, Michigan, Minnesota, New York, Ohio, Pennsylvania, and Wisconsin in the United States, and the province of Ontario in Canada, whose direct surface runoff and watersheds form a large drainage basin that feeds into the
It can be traced to Stephen H. Long's 1820 scientific expedition which put the Great American Desert on the map. [3] [4] Today the area is usually referred to as the High Plains, and the original term is sometimes used to describe the arid region of North America, which includes parts of northwestern Mexico and the American southwest.
The list of drainage basins by area identifies basins (also known as "catchments" or, in North American usage, "watersheds"), sorted by area, which drain to oceans, mediterranean seas, rivers, lakes and other water bodies.
A water resource region is the first level of classification used by the United States Geological Survey to divide and sub-divide the United States into successively smaller hydrologic units as part of the U.S. hydrologic unit system. This first level of classification divides the United States into 21 major geographic areas, or regions.