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The largest county is Baldwin (1,590 sq mi, 4,118 km 2) and the smallest is Etowah (535 sq mi, 1,386 km 2). [8] The Constitution of Alabama requires that any new county in Alabama cover at least 600 square miles (1,600 km 2) in area, effectively limiting the creation of new counties in the state. [9]
The Allegheny Ridge is prominently shown in the map center-left, the gaps of the Allegheny Front are located in the border area between Cambria County (uplands) and Huntingdon County (lowlands). USGS - Appalachians Mountain chain showing the lines of the barrier ridges in central, western, and northwestern Pennsylvania.
As the route leaves Allegheny for Butler County, Pittsburgh's suburban regions transition toward rural hills, and the freeway connection continues to Kittanning. US 30: The famous Lincoln Highway enters Allegheny County from a sparsely portion of southern Beaver County. The first mile encompasses one of the few rural patches of Allegheny County ...
The Pittsburgh, Allegheny and McKees Rocks Railroad was, and the Pittsburgh and Ohio Central Railroad is, located in an area along the river known as the "Bottoms". The McKees Rocks Bridge, which carries traffic between McKees Rocks and Pittsburgh, is the longest bridge in Allegheny County, at 7,293 feet (2,223 m).
Allegheny County, Pennsylvania, geography stubs (2 C, 69 P) Pages in category "Geography of Allegheny County, Pennsylvania" The following 12 pages are in this category, out of 12 total.
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Swapped to more accurate version based on File:Map of Alabama highlighting Madison County.svg: 03:58, 25 February 2009: 558 × 887 (106 KB) Spyder Monkey: removed extra whitespace: 04:19, 23 February 2009: 744 × 1,052 (107 KB) Spyder Monkey
The Pennsylvania Mine Map Atlas is a joint project of PASDA and the Pennsylvania Department of Environmental Protection. [14] This Mine Map Atlas provides access to thousands of scanned, georeferenced underground mine maps in the Commonwealth of Pennsylvania. [14] It allows users to view their homes and see if any mines are beneath those homes ...