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The Boundary Waters is the largest wilderness area east of the Rocky Mountains. It spans more than 1 million acres along the U.S.-Canada border and is filled with forests, glacial lakes and streams.
The Ogallala Aquifer (oh-gə-LAH-lə) is a shallow water table aquifer surrounded by sand, silt, clay, and gravel located beneath the Great Plains in the United States. As one of the world's largest aquifers, it underlies an area of approximately 174,000 sq mi (450,000 km 2) in portions of eight states (South Dakota, Nebraska, Wyoming, Colorado, Kansas, Oklahoma, New Mexico, and Texas). [1]
The Pacific Basin is bounded by the Continental divide to the east and Pacific Ocean to the west; the basin excludes the endorheic Great Basin in the west. The Great Basin has a closed loop boundary encompassing substantially all of Nevada, the western half of Utah and parts of Oregon, California, Idaho, and Wyoming.
"Great Plains", or Western Plains, is also the ecoregion of the Great Plains or alternatively the western portion of the Great Plains. The Great Plains lie across both the Central United States and Western Canada, encompassing: Most or all of the U.S. states of Kansas, Nebraska, and North and South Dakota;
Boundary Waters advocacy groups say they are concerned that a proposed platform for the next Republican president would have devastating environmental impacts by allowing mining in a protected ...
The Boundary Waters Canoe Area Wilderness doesn't take a backseat to, well, anything, but it'll have to now in one instance: it's no longer the largest dark sky "sanctuary" in the world. The skies ...
Two great continental watersheds drained into it from east and west, diluting its waters and bringing resources in eroded silt that formed shifting delta systems along its low-lying coasts. There was little sedimentation on the eastern shores of the seaway; the western boundary, however, consisted of a thick clastic wedge eroded eastward from ...
The Red River Valley is a region in central North America that is drained by the Red River of the North; it is part of both Canada and the United States.Forming the border between Minnesota and North Dakota when these territories were admitted as states in the United States, this fertile valley has been important to the economies of these states and to Manitoba, Canada.