|
Clarion River
The Clarion River is a tributary of the Allegheny River, approximately 110 mi (177 km) long, in west central Pennsylvania in the United States. It drains a rugged area of the Allegheny Plateau in the Ohio River watershed, flowing through narrow serpentine valleys and hardwood forests. Course The river is formed at Johnsonburg in central Elk County by the confluence of its East and West Branches. The East Branch, approximately 15 mi (24 km) long, rises in northeastern Elk County and flows southwest through East Branch Clarion River Lake to join the West Branch. The river flows generally west-southwest across western Pennsylvania in a tight meandering course past Ridgway and Clarion. It joins the Allegheny from the east in western Clarion County approximately 5 mi (8 km) south of Emlenton. The Clarion is a designated part of the National Wild and Scenic River program. Discharges History Before 1817, the Clarion River was more commonly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
I-80
Interstate 80 (I-80) is an east–west transcontinental freeway that crosses the United States from downtown San Francisco, California, to Teaneck, New Jersey, in the New York metropolitan area. The highway was designated in 1956 as one of the original routes of the Interstate Highway System; its final segment was opened in 1986. The second-longest Interstate Highway in the United States after I-90, it runs through many major cities, including Oakland, Sacramento, Reno, Salt Lake City, Omaha, Des Moines, and Toledo and passes within of Chicago, Cleveland, and New York City. I-80 is the Interstate Highway that most closely approximates the route of the historic Lincoln Highway, the first road across the United States. The highway roughly traces other historically significant travel routes in the Western United States: the Oregon Trail across Wyoming and Nebraska, the California Trail across most of Nevada and California, the first transcontinental airmail route, and the r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emlenton, Pennsylvania
Emlenton is a borough in Clarion and Venango counties in the U.S. state of Pennsylvania. The population was 625 at the 2010 census. Of these, 617 were in Venango County, and eight were in Clarion County. The borough is home to the Emlenton Bridge on I-80, which spans the Allegheny River. History Emlenton is named for Emlen, the wife of John T. Sherer, one of its founders. The Emlenton Historic District was added to the National Register of Historic Places in 1997. Geography According to the United States Census Bureau, the borough has a total area of , of which , or 0.77%, is water. Demographics As of the census of 2000, there were 784 people, 322 households, and 200 families residing in the borough. The population density was 947.1 people per square mile (364.7/km2). There were 360 housing units at an average density of 434.9 per square mile (167.5/km2). The racial makeup of the borough was 98.85% White, 0.26% Native American, 0.38% Asian, and 0.51% from two or more races ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of National Wild And Scenic Rivers
This is a list of the designated National Wild and Scenic Rivers in the United States. Each river has been designated by Congress, or, if certain requirements were met, the Secretary of the Interior. A designation may include multiple watercourses; for example, the Saint Croix National Scenic Riverway includes the Namekagon River as well as the St. Croix River. Rivers are managed by one or more federal, state, local government agencies. Only federal agencies are listed in this table. Abbreviations used are: *USACE = U.S. Army Corps of Engineers *BLM = Bureau of Land Management *NPS = National Park Service *USFS = United States Forest Service *USFWS = United States Fish and Wildlife Service Gallery Oregon Salmon River Clackamas County from bridge looking west P1651.jpeg, Salmon River in Oregon Ontonagon River.jpg, Ontonagon River, Michigan Wilson Creek-27527-1.jpg, Wilson Creek Red River of New Mexico Picture 2010.jpg, Red River, New Mexico Lower Flathead River.jpg, lower Flath ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wilderness
Wilderness or wildlands (usually in the plural), are natural environments on Earth that have not been significantly modified by human activity or any nonurbanized land not under extensive agricultural cultivation. The term has traditionally referred to terrestrial environments, though growing attention is being placed on marine wilderness. Recent maps of wilderness suggest it covers roughly one quarter of Earth's terrestrial surface, but is being rapidly degraded by human activity. Even less wilderness remains in the ocean, with only 13.2% free from intense human activity. Some governments establish protection for wilderness areas by law to not only preserve what already exists, but also to promote and advance a natural expression and development. These can be set up in preserves, conservation preserves, national forests, national parks and even in urban areas along rivers, gulches or otherwise undeveloped areas. Often these areas are considered important for the survival of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acid Mine Drainage
Acid mine drainage, acid and metalliferous drainage (AMD), or acid rock drainage (ARD) is the outflow of acidic water from metal mines or coal mines. Acid rock drainage occurs naturally within some environments as part of the rock weathering process but is exacerbated by large-scale earth disturbances characteristic of mining and other large construction activities, usually within rocks containing an abundance of sulfide minerals. Areas where the earth has been disturbed (e.g. construction sites, subdivisions, and transportation corridors) may create acid rock drainage. In many localities, the liquid that drains from coal stocks, coal handling facilities, coal washeries, and coal waste tips can be highly acidic, and in such cases it is treated as acid rock drainage. This liquid often contains highly toxic metals, such as copper or iron. These, combined with reduced pH, have a detrimental impact on the streams aquatic environments. The same type of chemical reactions and pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pittsburgh
Pittsburgh ( ) is a city in the Commonwealth of Pennsylvania, United States, and the county seat of Allegheny County. It is the most populous city in both Allegheny County and Western Pennsylvania, the second-most populous city in Pennsylvania behind Philadelphia, and the 68th-largest city in the U.S. with a population of 302,971 as of the 2020 census. The city anchors the Pittsburgh metropolitan area of Western Pennsylvania; its population of 2.37 million is the largest in both the Ohio Valley and Appalachia, the second-largest in Pennsylvania, and the 27th-largest in the U.S. It is the principal city of the greater Pittsburgh–New Castle–Weirton combined statistical area that extends into Ohio and West Virginia. Pittsburgh is located in southwest Pennsylvania at the confluence of the Allegheny River and the Monongahela River, which combine to form the Ohio River. Pittsburgh is known both as "the Steel City" for its more than 300 steel-related businesses and as the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tanning (leather)
Tanning is the process of treating skins and hides of animals to produce leather. A tannery is the place where the skins are processed. Tanning hide into leather involves a process which permanently alters the protein structure of skin, making it more durable and less susceptible to decomposition and coloring. Before tanning, the skins are dehaired, degreased, desalted and soaked in water over a period of six hours to two days. Historically this process was considered a noxious or "odoriferous trade" and relegated to the outskirts of town. Historically, tanning used tannin, an acidic chemical compound from which the tanning process draws its name, derived from the bark of certain trees. An alternative method, developed in the 1800s, is chrome tanning, where chromium salts are used instead of natural tannins. History The English word for tanning is from medieval Latin , derivative of ( oak bark), from French (tanbark), from old-Cornish (red oak). These terms are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Forest Service
The United States Forest Service (USFS) is an agency of the U.S. Department of Agriculture that administers the nation's 154 national forests and 20 national grasslands. The Forest Service manages of land. Major divisions of the agency include the Chief's Office, National Forest System, State and Private Forestry, Business Operations, and Research and Development. The agency manages about 25% of federal lands and is the only major national land management agency not part of the U.S. Department of the Interior, which manages the National Park Service, the U.S. Fish and Wildlife Service, and the Bureau of Land Management. History The concept of national forests was born from Theodore Roosevelt's conservation group, Boone and Crockett Club, due to concerns regarding Yellowstone National Park beginning as early as 1875. In 1876, Congress formed the office of Special Agent in the Department of Agriculture to assess the quality and conditions of forests in the United Stat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Titusville, Pennsylvania
Titusville is a city in the far eastern corner of Crawford County, Pennsylvania, United States. The population was 5,601 at the 2010 census and an estimated 5,158 in 2019. Titusville is known as the birthplace of the American oil industry and for a number of years was the leading oil-producing region in the world. Titusville was notable for its lumber industry, including 17 sawmills, as well as its plastic and toolmaking industries. History The area was first settled in 1796 by Jonathan Titus. Within 14 years, others bought and improved land lying near his, along the banks of what is now Oil Creek. Titus named the village Edinburg(h), but as it grew, the settlers began to call the hamlet Titusville. The village was incorporated as a borough in 1849. It was a slow-growing community until the 1850s, when petroleum was discovered in the region. Oil was known to exist there, but there was no practical way to extract it. Its main use at that time had been as a medicine for both ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edwin Drake
Edwin Laurentine Drake (March 29, 1819 – November 9, 1880), also known as Colonel Drake, was an American businessman and the first American to successfully drill for oil. Early life Edwin Drake was born in Greenville, New York on March 29, 1819, the son of Lyman and Laura Drake. He grew up on family farms around New York state and Castleton, Vermont before leaving home at the age of 19. He spent the early parts of his life working the railways around New Haven, Connecticut as a clerk, express agent and a conductor. During this time, in 1845, he married Philena Adams who died while giving birth to their second child in 1854. Drake remarried three years later to Laura Dowd, sixteen years his junior, in 1857. During this summer, illness prevented Drake from carrying on with his job. He retained the privileges of a train conductor, including free travel on the railroads. By 1858, the Drake family found themselves living in Titusville, Pennsylvania. Seneca Oil While petroleu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allegheny National Forest
The Allegheny National Forest is a National Forest in Northwestern Pennsylvania, about 100 miles northeast of Pittsburgh. The forest covers of land. Within the forest is Kinzua Dam, which impounds the Allegheny River to form Allegheny Reservoir. The administrative headquarters for the Allegheny National Forest is in Warren. The Allegheny National Forest has two ranger stations, one in Marienville, Forest County, and the other in Bradford, McKean County. The Allegheny National Forest lies in the heart of Pennsylvania's oil and gas region. It is only from the site of the first commercial oil well in the United States at Titusville, Pennsylvania. In 1981, about 17 percent of the state's crude oil production came from mineral rights owned by private individuals within the Forest boundary. History before 1923 Today the Allegheny Plateau is known for black cherry, maple and other hardwoods, but two hundred years ago these species were less numerous. Today's forest is largely the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clarion (instrument)
Clarion is a common name for a trumpet in the Middle Ages and the Renaissance. It also is used as a name for a 4' organ reed stop. There is wide confusion over whether clarion invariably refers to a type of trumpet or simply the upper register of the standard trumpet. Etymology "Clarion" derives from three Latin words: the noun ''clario'' (trumpet), the adjective ''clarus'' (bright or clear), and the verb ''claro'' (to make clear). Throughout Europe, an eclectic set of variations on clarion came into use. The meaning of these variations was not standard. It is not clear whether they are meant to refer to an actual instrument or simply the high register of the trumpet. In France, the usage evolved into words like "clairin", "clarin", "clerain", "clerin", "clairon", "claroncel", and "claronchiel". Clairon become the most commonly used version. English variants were "claro", "clario", "clarone", "clarasius", "clarioune", "claryon" and "clarion". In Spain, the terminology became "cla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Emlenton, Pennsylvania")
