The Great Appalachian Valley, also called The Great Valley or Great Valley Region, is one of the major landform features of eastern North America. It is a gigantic trough, including a chain of valley lowlands, and the central feature of the Appalachian Mountains system. The trough stretches about 1,200 miles (1,900 km) from Quebec in the north to Alabama in the south and has been an important north–south route of travel since prehistoric times.
The Ridge-and-Valley Appalachians, also called the Ridge and Valley Province or the Valley and Ridge Appalachians, are a physiographic province of the larger Appalachian Highlands division. The physiographic province is divided into three sections, the Hudson Valley, the Central, and the Tennessee.
The Cumberland Valley is a northern constituent valley of the Great Appalachian Valley, within the Atlantic Seaboard watershed in Pennsylvania and Maryland. The Appalachian Trail crosses through the valley.
Blue Mountain, Blue Mountain Ridge, or the Blue Mountains of Pennsylvania is a ridge of the Appalachian Mountains in eastern Pennsylvania. Forming the southern and eastern edge of the Ridge-and-Valley Appalachians physiographic province in Pennsylvania, Blue Mountain extends 150 miles (240 km) from the Delaware Water Gap on the New Jersey border in the east to Big Gap in Franklin County in south-central Pennsylvania at its southwestern end.
Regions of Pennsylvania in the United States include:
The geography of Pennsylvania varies from sea level marine estuary to mountainous plateau. The state is known for its natural resources, ports, and the leading role it played in the nation's founding and history.
Black Creek is a long source tributary of Nescopeck Creek so part of the Susquehanna River drainage basin. It is also the second & longer stream of the same name recognized by the USGS GNIS system in Luzerne County, Pennsylvania, in the United States—compared to the Black Creek beyond the ridgeline of the drainage divide, so in the Lehigh River valley and Carbon County. The headwaters of both Black Creeks in Luzerne county are only a few miles apart, and both valleys were traversed by the Lausanne-Nescopeck Turnpike in the first half of the 19th-century.
Bald Eagle Mountain – once known locally as Muncy Mountain – is a stratigraphic ridge in the Ridge-and-Valley Appalachians of central Pennsylvania, United States, running east of the Allegheny Front and northwest of Mount Nittany. It lies along the southeast side of Bald Eagle Creek and south of the West Branch Susquehanna River, and is the westernmost ridge in its section of the Ridge-and-Valley Appalachians. The ridge line separates the West Branch Susquehanna Valley from the Nippenose and White Deer Hole valleys, and Bald Eagle Valley from Nittany Valley.
The geography of New York (state) varies widely. Most of New York is dominated by farms, forests, rivers, mountains, and lakes. New York's Adirondack Park is larger than any U.S. National Park in the contiguous United States. Niagara Falls, on the Niagara River as it flows from Lake Erie to Lake Ontario, is a popular attraction. The Hudson River begins near Lake Tear of the Clouds and flows south through the eastern part of the state without draining lakes George or Champlain. Lake George empties at its north end into Lake Champlain, whose northern end extends into Canada, where it drains into the Richelieu River and then the St. Lawrence. Four of New York City's five boroughs are on the three islands at the mouth of the Hudson River: Manhattan Island, Staten Island, and Brooklyn and Queens on Long Island.
The Geology of Pennsylvania consists of six distinct physiographic provinces, three of which are subdivided into different sections. Each province has its own economic advantages and geologic hazards and plays an important role in shaping everyday life in the state. From the southeast corner to the northwest corner of the state, the include: the Atlantic Plain Province province, the Piedmont Province, the New England Province, the Ridge and Valley Province, the Appalachain Province, and the Central Lowlands Province.
Clarks Knob is a summit in Franklin County, Pennsylvania. It is the highest point on Blue Mountain, the eastern front range of Pennsylvania's Ridge and Valley Appalachians region.
The Lehigh Gap or Lehigh Water Gap is a water gap located in the townships of Lehigh, Washington, Lower Towamensing, and East Penn in the Lehigh Valley and Coal Region regions of eastern Pennsylvania. It was formed by the Lehigh River, where it cuts through the Blue Mountain in Pennsylvania.
Pochuck Mountain is a ridge in the New York-New Jersey Highlands region of the Appalachian Mountains. Pochuck Mountain's summit and most of its peaks lie within Vernon Township, Sussex County, New Jersey, although the south-western portion of the ridge lies within Hardyston Township, and the north-eastern tip of the ridge extends over the New York state line into Orange County. The ridge marks the eastern edge of the Great Appalachian Valley, and it divides the watersheds of the Wallkill River and its tributary Pochuck Creek. The two rivers meet at Pochuck Neck, marking the terminus of the ridge.
Nesquehoning Mountain or Nesquehoning Ridge is a 15–17-mile-long (24–27 km) coal bearing ridge dividing the waters of Lehigh Valley to the north from the Schuylkill River valley and the several near parallel ridgelines of the Ridge-and-valley Appalachians barrier range all local members of which run generally WSW-ENE in the greater overall area.
Mauch Chunk Ridge or Mauch Chunk Mountain is a historically important barrier ridgeline north of the Blue Mountain escarpment and 3rd parallel ridgeline south of the Nesquehoning Creek after Nesquehoning Mountain and Pisgah Ridge in the Ridge-and-Valley Appalachians of Northeastern Pennsylvania. The three lengthy ridges and two valley formations together are literally the first ridges and valleys just south of the Poconos on the opposite side of the Lehigh River—geological formations which contain some of the richest Anthracite coal bearing sedimentary rocks of Northeastern Pennsylvania. Historically, the first Anthracite mines in America were located atop Pisgah Mountain at Summit Hill and caravanned by pack mule through the Mauch Chunk Creek valley. Then the historic Mauch Chunk and Summit Hill Switchback Railroad, the second railway in North America was built along the Pisgah Mountain side of the same valley—and become quite a tourist attraction and is known as the world's first roller coaster, and would inspire others in purpose built amusement parks. The Mauch Chunk and Summit Hill Switchback Railroad became only a tourist road in the 1890s and thrilled riders until it was liquidated in the 1930s, a casualty of the Great depression.
Broad Mountain or Broad Ridge in the Ridge-and-Valley Appalachians in Carbon County and Schuylkill County in Pennsylvania is a steep-faced, anthracite-bearing barrier ridge just south of both Beaver Meadows and Weatherly, north of Nesquehoning and west and south of the Lehigh River basin west of the southwest border of the Poconos. The mountain ridge line is mostly flat and looks very similar to the man-made piles of culm in the region from the roads and towns looking up.
The gaps of the Allegheny, meaning gaps in the Allegheny Ridge in west-central Pennsylvania, is a series of escarpment eroding water gaps along the saddle between two higher barrier ridge-lines in the eastern face atop the Allegheny Ridge or Allegheny Front escarpment. The front extends south through Western Maryland and forms much of the border between Virginia and West Virginia, in part explaining the difference in cultures between those two post-Civil War states. While not totally impenetrable to daring and energetic travelers on foot, passing the front outside of the water gaps with even sure footed mules was nearly impossible without navigating terrain where climbing was necessary on slopes even burros would find extremely difficult.
Hazle Creek is an American tributary source stream of the Lehigh and Delaware Rivers in the Commonwealth of Pennsylvania in the United States.
