|
Great Lakes Areas Of Concern
Great Lakes Areas of Concern are designated geographic areas within the Great Lakes Basin that show severe environmental degradation. There are a total of 43 areas of concern within the Great Lakes, 26 being in the United States, 12 in Canada, and five shared by the two countries. The Great Lakes, the largest system of fresh water lakes in the world, are shared by the United States and Canada. They make up 95% of the surface freshwater in the contiguous United States and have 10,000 miles of coastline (including connecting channels, mainland and islands)—more than the contiguous United States' Pacific and Atlantic coastlines combined. The lakes are a system of transport and shipping, as well as a place of recreation. Description of an area of concern An area of concern must have at least "one beneficial use impairment which means that it has undergone a change in its chemical, physical, or biological integrity of a water body." These include: *restrictions on fish an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Clean Water Act
The Clean Water Act (CWA) is the primary federal law in the United States governing water pollution. Its objective is to restore and maintain the chemical, physical, and biological integrity of the nation's waters; recognizing the primary responsibilities of the states in addressing pollution and providing assistance to states to do so, including funding for publicly owned treatment works for the improvement of wastewater treatment; and maintaining the integrity of wetlands.Jim Hanlon, Mike Cook, Mike Quigley, Bob Wayland"Water Quality: A Half Century of Progress."EPA Alumni Association. March 2016. The Clean Water Act was one of the United States' first and most influential modern environmental laws. Its laws and regulations are primarily administered by the U.S. Environmental Protection Agency (EPA) in coordination with state governments, though some of its provisions, such as those involving filling or dredging, are administered by the U.S. Army Corps of Engineers. Its impl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Lake Erie
Lake Erie ( ) is the fourth-largest lake by surface area of the five Great Lakes in North America and the eleventh-largest globally. It is the southernmost, shallowest, and smallest by volume of the Great Lakes and also has the shortest average water lake retention time, residence time. At its deepest point, Lake Erie is deep, making it the only Great Lake whose deepest point is above sea level. Located on the Canada–United States border, International Boundary between Canada and the United States, Lake Erie's northern shore is the Provinces and territories of Canada, Canadian province of Ontario, specifically the Ontario Peninsula, with the U.S. states of Michigan, Ohio, Pennsylvania, and New York (state), New York on its western, southern, and eastern shores. These jurisdictions divide the surface area of the lake with water boundaries. The largest city on the lake is Cleveland, anchoring the third largest U.S. metro area in the Great Lakes region, after Chicago metropoli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Torch Lake (Houghton County, Michigan)
Torch Lake is an approximately lake lying mostly within Torch Lake Township, Houghton County, Michigan, Torch Lake Township with portions within Osceola Township, Houghton County, Michigan, Osceola and Schoolcraft Township, Houghton County, Michigan, Schoolcraft townships in Houghton County in the U.S. state of Michigan. The lake is fed by the Traprock River. The village of Lake Linden, Michigan, Lake Linden at the north end of the lake was once the site of the largest copper milling operation in North America. About of copper mill stamp sands were dumped into Torch Lake itself, filling about 20 percent of the lake's volume. The United States Environmental Protection Agency, Environmental Protection Agency believes the contaminated sediments to be thick in some areas, and surface sediments contain up to 2,000 parts per million (ppm) of copper. The lake is about east-northeast of Houghton, Michigan, Houghton and is approximately long and wide at . The lake has a total surface ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Saint Louis River (Lake Superior Tributary)
The Saint Louis River (abbreviated St. Louis River) is a river in the U.S. states of Minnesota and Wisconsin that flows into Lake Superior. The largest U.S. river to flow into the lake, it is in lengthU.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed May 1, 2012 and starts east of Hoyt Lakes, Minnesota. The river's watershed covers . Near the Twin Ports of Duluth, Minnesota and Superior, Wisconsin, the river becomes a freshwater estuary. History According to Warren Upham, the Ojibwe name of the river is ''Gichigami-ziibi'' (Great-lake River). He notes: "The river was probably so named by Pierre Gaultier de Varennes, sieur de La Vérendrye (1685–1749), who was a very active explorer, in the years 1731 and onward. Shortly before his death the king of France in 1749 conferred on him the cross of Saint Louis as a recognition of the importance of his discoveries, and thence the name of the Saint Louis River appears ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Thunder Bay (Ontario)
Thunder Bay is a large bay on the northern shore of Lake Superior, in Thunder Bay District, Ontario, Canada. The bay is bordered to the east by the Sibley Peninsula at the southern tip of which is Thunder Cape, marking the entrance to the bay for ships approaching from the east. The mesas and sills on the peninsula are known as the Sleeping Giant due to their appearance when viewed from Thunder Bay. The harbour at the City of Thunder Bay is Canada's westernmost port on the Great Lakes. The Ojibwa called it ''Animikie'', meaning "thunder". French explorers called it ''Baie du Tonnerre'' which was translated to Thunder Bay in English. In 1871, the bay gave its name to the newly created Thunder Bay District, and in 1970, the amalgamated city of Port Arthur and Fort William also adopted the name Thunder Bay. The waters along the bay's shores form part of the Lake Superior Water Trail. This long water trail is a link in the Trans Canada Trail network and provides paddlers acce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Nipigon
Nipigon () is a township in Thunder Bay District, Northwestern Ontario, Canada, located along the west side of the Nipigon River and south of the small Helen Lake running between Lake Nipigon and Lake Superior. Lake Nipigon is located approximately north of Nipigon. Located at latitude 49.0125° N, Nipigon is the northernmost community on the Great Lakes. A communications tower near Nipigon broadcasts a local radio station and television channels from Thunder Bay, including CKPR (TBT), CFNO and CBQT. The Nipigon Crater or Crater Nipigon on Mars is named after this town. Geography Nipigon is located northeast of Thunder Bay, southwest of Geraldton and Beardmore (both in the municipality of Greenstone), west of Marathon, and northwest of Sault Ste. Marie. Nipigon is surrounded with pine and other varieties of forests. History First Nations have lived in the Nipigon area for thousands of years, leaving behind rock paintings on the cliffs at the mouth of the Nipigon River. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Lake Superior
Lake Superior is the largest freshwater lake in the world by surface areaThe Caspian Sea is the largest lake, but is saline, not freshwater. Lake Michigan–Huron has a larger combined surface area than Superior, but is normally considered two separate lakes. and the third-largest freshwater lake by volume, holding 10% of the fresh water in all of the world's rivers and lakes. Located in central North America, it is the northernmost and westernmost of the Great Lakes of North America, straddling the Canada–United States border with the Canadian province of Ontario to the north and east and the U.S. states of Minnesota to the west and Michigan and Wisconsin to the south. It drains into Lake Huron via St. Marys River, then through the lower Great Lakes to the St. Lawrence River and ultimately the Atlantic Ocean. Name The Ojibwe name for the lake is ''gichi-gami'' (in syllabics: , pronounced ''gitchi-gami'' or ''kitchi-gami'' in different dialects), meaning "great sea". ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Nitrogen Oxides
In atmospheric chemistry, is shorthand for nitric oxide () and nitrogen dioxide (), the nitrogen oxides that are most relevant for air pollution. These gases contribute to the formation of smog and acid rain, as well as affecting tropospheric ozone. gases are usually produced from the reaction between nitrogen and oxygen during combustion of fuels, such as hydrocarbons, in air; especially at high temperatures, such as in car engines. In areas of high motor vehicle traffic, such as in large cities, the nitrogen oxides emitted can be a significant source of air pollution. gases are also produced naturally by lightning. does not include nitrous oxide (), a fairly inert oxide of nitrogen that contributes less severely to air pollution, notwithstanding its involvement in ozone depletion and high global warming potential. is the class of compounds comprising and the compounds produced from the oxidation of which include nitric acid, nitrous acid (HONO), din ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Sulfur Dioxide
Sulfur dioxide (IUPAC-recommended spelling) or sulphur dioxide (traditional Commonwealth English) is the chemical compound with the formula . It is a colorless gas with a pungent smell that is responsible for the odor of burnt matches. It is released naturally by volcanic activity and is produced as a by-product of metals refining and the burning of Sour gas, sulfur-Sour crude oil, bearing fossil fuels. Sulfur dioxide is somewhat toxic to humans, although only when inhaled in relatively large quantities for a period of several minutes or more. It was known to medieval alchemy, alchemists as "volatile spirit of sulfur". Structure and bonding SO2 is a bent molecule with ''C''2v Point groups in three dimensions, symmetry point group. A valence bond theory approach considering just ''s'' and ''p'' orbitals would describe the bonding in terms of resonance (chemistry), resonance between two resonance structures. The sulfur–oxygen bond has a bond order of 1.5. There is support f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Acid Rain
Acid rain is rain or any other form of Precipitation (meteorology), precipitation that is unusually acidic, meaning that it has elevated levels of hydrogen ions (low pH). Most water, including drinking water, has a neutral pH that exists between 6.5 and 8.5, but acid rain has a pH level lower than this and ranges from 4–5 on average. The more acidic the acid rain is, the lower its pH is. Acid rain can have harmful effects on plants, aquatic animals, and infrastructure. Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the Properties of water, water molecules in the atmosphere to produce acids. Acid rain has been shown to have adverse impacts on forests, Fresh water, freshwaters, soils, microbes, insects and aquatic life-forms. In ecosystems, persistent acid rain reduces tree bark durability, leaving flora more susceptible to environmental stressors such as drought, heat/cold and pest infestation. Acid rain is also capable of detriment ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Fossil Fuel
A fossil fuel is a flammable carbon compound- or hydrocarbon-containing material formed naturally in the Earth's crust from the buried remains of prehistoric organisms (animals, plants or microplanktons), a process that occurs within geological formations. Reservoirs of such compound mixtures, such as coal, petroleum and natural gas, can be extracted and burnt as fuel for human consumption to provide energy for direct use (such as for cooking, heating or lighting), to power heat engines (such as steam or internal combustion engines) that can propel vehicles, or to generate electricity via steam turbine generators. Some fossil fuels are further refined into derivatives such as kerosene, gasoline and diesel, or converted into petrochemicals such as polyolefins ( plastics), aromatics and synthetic resins. The origin of fossil fuels is the anaerobic decomposition of buried dead organisms. The conversion from these organic materials to high-carbon fossil fuels is ty ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
