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55d - The Pre-Wisconsinan Drift Plains. 55f - The Whitewater Interlobate Area. 56 Southern Michigan/Northern Indiana Drift Plains. 56a - The Lake Country. 56b - The Elkhart Till Plains. 56c - The Middle Tippecanoe Plains. 56d - The Michigan Lake Plain. 57 Huron/Erie Lake Plains. 57a - The Maumee Lake Plains.
The Arkansas Valley is a Level III ecoregion designated by the Environmental Protection Agency (EPA) in the U.S. states of Arkansas and Oklahoma.It parallels the Arkansas River between the flat plains of western Oklahoma and the Arkansas Delta, dividing the Ozarks and the Ouachita Mountains with the broad valleys created by the river's floodplain, occasionally interrupted by low hills ...
2 Puget Lowland. 3 Willamette Valley. 111 Ahklun Mountains and Kilbuck Mountains. 113 Alaska Peninsula Mountains. 115 Cook Inlet. 119 Pacific Coastal Mountains. 120 Coastal Western Hemlock-Sitka Spruce Forests. The corresponding CEC ecoregion in Canada is called the Pacific Maritime Ecozone.
The geography of Arkansas varies widely. The state is covered by mountains, river valleys, forests, lakes, and bayous in addition to the cities of Arkansas. Hot Springs National Park features bubbling springs of hot water, formerly sought across the country for their healing properties. [ 1 ][ 2 ] Crowley's Ridge is a geological anomaly rising ...
The Springfield Plateau is the only Ozark Highland Level IV ecoregion within all four states. [1] The nearly level to rolling Springfield Plateau is underlain by cherty limestone of the Mississippian Boone Formation and Burlington Limestone; it is less rugged and wooded than Ecoregions 38, 39b, and 39c, and lacks the Ordovician dolomite and limestone of Ecoregions 39c and 39d.
The Athens Plateau or Athens Piedmont (EPA Level IV ecoregion 36a) consists of a series of low relief ridges, none exceeding 1,000 feet (300 m). It is located south of the Ouachitas and extends to the Arkansas-Oklahoma border. The Athens Piedmont runs from Arkadelphia, Arkansas into Oklahoma through Clark, Howard, Pike, and Sevier counties in ...
Eastern Temperate Forests. The Eastern Temperate Forests is a Level I ecoregion of North America designated by the Commission for Environmental Cooperation (CEC) in its North American Environmental Atlas. The region covers much of the Eastern and Midwestern United States, the U.S. Interior Highlands, and parts of Ontario, Quebec, and the Maritimes.
Overview. Indiana is bordered on the north by Lake Michigan and the state of Michigan; on the east by Ohio; on the south by Kentucky, with which it shares the Ohio River as a border; and on the west by Illinois. Indiana is one of the Great Lakes states. The northern boundary of the states of Ohio, Indiana, and Illinois was originally defined to ...