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Kopili River
Kopili River is an interstate river in Northeast India that flows through the states of Meghalaya and Assam and is the largest south bank tributary of the Brahmaputra in Assam. Course The Kopili originates in the Meghalaya plateau and flows through Central Assam and the hill districts of Assam before its confluence with the Brahmaputra. In Assam it drains the districts of Karbi Anglong, Dima Hasao, Kamrup and Nagaon. The river flows for a total length of and has a catchment area of . It is noted for several spectacular waterfalls along its course which has several deep gorges and rapids in the of its flow before debouching into the plains at Nagaon district. Waterworks Completed in 1975, the Kopili Flow Irrigation Scheme in Kamrup district irrigates of land across 14 revenue villages and facilitates paddy cultivation. The Kopili Hydro Electric Project, located across the districts of Dima Hasao in Assam and Jaintia Hills in Meghalaya and run by the North Eastern Elect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nagaon
Nagaon (previously Nowgong; Assamese নগাঁও), is a town and a municipal board in Nagaon district in the Indian state of Assam. It is situated east of Guwahati. History This division was organised on the both banks of Kalang river by Momai Tamuli Borbarua in 1611 during the reign of Pratap Singha. Its settlement was completed during the reign of Gadadhar Singha. Nagoan was under the administration of the Borphukan. From Nagoan 1,310 soldiers took part in the Kachari invasion of Swargadeo Rudra Singha in 1707 Geography The Kolong River, a tributary of the Brahmaputra River, flows through Nagaon and in the process divides the city into two distinct regions: Nagaon and Haibargaon. Nagaon is bounded on the north by the Sonitpur district and the Brahmaputra River. On the south, it borders the West Karbi Anglong district, Dima Hasao and Hojai District. On the east it is bounded by East Karbi Anglong district and the Golaghat district, while on the west it neighbours the Ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gorge
A canyon (from ; archaic British English spelling: ''cañon''), or gorge, is a deep cleft between escarpments or cliffs resulting from weathering and the erosion, erosive activity of a river over geologic time scales. Rivers have a natural tendency to cut through underlying surfaces, eventually wearing away rock layers as sediments are removed downstream. A river bed will gradually reach a baseline elevation, which is the same elevation as the body of water into which the river drains. The processes of weathering and erosion will form canyons when the river's River source, headwaters and estuary are at significantly different elevations, particularly through regions where softer rock layers are intermingled with harder layers more resistant to weathering. A canyon may also refer to a rift between two mountain peaks, such as those in ranges including the Rocky Mountains, the Alps, the Himalayas or the Andes. Usually, a river or stream carves out such splits between mountains. Examp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rivers Of Assam
A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of water. Small rivers can be referred to using names such as creek, brook, rivulet, and rill. There are no official definitions for the generic term river as applied to geographic features, although in some countries or communities a stream is defined by its size. Many names for small rivers are specific to geographic location; examples are "run" in some parts of the United States, "burn" in Scotland and northeast England, and "beck" in northern England. Sometimes a river is defined as being larger than a creek, but not always: the language is vague. Rivers are part of the water cycle. Water generally collects in a river from precipitation through a drainage basin from surface runoff and other sources such as groundwater recharge, springs, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rivers Of Meghalaya
A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of water. Small rivers can be referred to using names such as creek, brook, rivulet, and rill. There are no official definitions for the generic term river as applied to geographic features, although in some countries or communities a stream is defined by its size. Many names for small rivers are specific to geographic location; examples are "run" in some parts of the United States, " burn" in Scotland and northeast England, and "beck" in northern England. Sometimes a river is defined as being larger than a creek, but not always: the language is vague. Rivers are part of the water cycle. Water generally collects in a river from precipitation through a drainage basin from surface runoff and other sources such as groundwater recharge, sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kopili Hydro Electric Project
Kopili Hydro Electric Project is a , hydroelectric power project on the Kopili river and its tributary, Umrong stream. It is located in Dima Hasao district of Assam state in India. The project is developed and operated by North Eastern Electric Power Corporation Limited. It is an important project since the indian State of Assam, Arunachal Pradesh, Manipur, Meghalaya, Mizoram, Nagaland and Tripura benefit from this project. Overview The Khandong dam impounds Kopili river and Umrong dam impounds Umrong river creating Kopili reservoir and Umrong reservoir. Kopili reservoir partially falls in Meghalaya state as Kopili river forms geographical boundary between Assam and Meghalaya in this region. Water from Kopili reservoir is fed to Khandong power station, releasing water into Umrong reservoir. Water from Umrong reservoir is diverted via tunnels to Kopili power station on the bank of Kopili river. Tail race waters of Kopili power house are released back into the Kopil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biologically Dead
Dead zones are hypoxic (low-oxygen) areas in the world's oceans and large lakes. Hypoxia occurs when dissolved oxygen (DO) concentration falls to or below 2 mg of O2/liter. When a body of water experiences hypoxic conditions, aquatic flora and fauna begin to change behavior in order to reach sections of water with higher oxygen levels. Once DO declines below 0.5 ml O2/liter in a body of water, mass mortality occurs. With such a low concentration of DO, these bodies of water fail to support the aquatic life living there. Historically, many of these sites were naturally occurring. However, in the 1970s, oceanographers began noting increased instances and expanses of dead zones. These occur near inhabited coastlines, where aquatic life is most concentrated. In March 2004, when the recently established UN Environment Programme published its first Global Environment Outlook Year Book (''GEO Year Book 2003''), it reported 146 dead zones in the world's oceans where marine life coul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Acidification
Freshwater acidification occurs when acidic inputs enter a body of fresh water through the weathering of rocks, invasion of acidifying gas (e.g. carbon dioxide), or by the reduction of acid anions, like sulfate and nitrate within the lake. Freshwater acidification is primarily caused by sulfur oxides (SOx) and nitrogen oxides (NOx) entering the water from atmospheric depositions and soil leaching. Carbonic acid and dissolved carbon dioxide can also enter freshwaters in a similar manner associated with runoff through carbon dioxide-rich soils. Runoff that contains these compounds may be accompanied by acidifying hydrogen ions and inorganic aluminum, which can be toxic to marine organisms. Acid rain is also a contributor to freshwater acidification. It is created when SOx and NOx react with water, oxygen, and other oxidants within the clouds. The buffering capacity of soils and bedrocks within the freshwater ecosystem can contribute to the acidity of the water. Each freshwater reserv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opencast Coal Mining
Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content and since the 1880s has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine is called a 'pit', and the above-ground structures are a 'pit head'. In Australia, "colliery" generally refers to an underground coal mine. Coal mining has had many developments in recent years, from the early days of men tunneling, digging and manually extracting the coal on carts to large open-cut and longwall mines. Mining at this scale requires the use of draglines, trucks, conveyors, hydraulic jacks and shearers. The coal mining industry has a long history of significant negative environmental impacts on local ecosystems, health impacts on local communities and workers, and contributes heavily to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Eastern Electric Power Corporation Limited
North Eastern Electric Power Corporation Limited (NEEPCO) is a central public sector undertaking. It is under the ownership of Ministry of Power, Government of India. It was formed on 2 April 1976 to plan, investigate, design, construct, generate, operate and maintain power stations in the North Eastern Region of India. NEEPCO is conferred with the Schedule A- Miniratna Category-I CPSU status. Venture NEEPCO is embarking on a plan to generate power from non-conventional sources of energy, especially by tapping solar power and wind in the coming years. Current capacity of NEEPCO is 2057 MW (2021). NTPC Limited takeover On 21 November 2019, the Government of India approved the take over of North Eastern Electric Power Corporation Limited (NEEPCO) by NTPC Limited. See also * Kopili Hydro Electric Project * Ranganadi Dam The Ranganadi Dam is a concrete-gravity diversion dam on the Ranganadi River (also known as Panyor River) in Arunachal Pradesh, India which serves a run- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jaintia Hills District
Jaintia Hills District was a district in Meghalaya, India that was established in 1972 with headquarters at Jowai which was taken from the United Khasi Jaintia Hills District Council. It was once part of the ancient Jaintia Kingdom. The present inhabitants of the District are the Pnar, the War, the Bhoi (Karbis), Tiwa (Lalung) and the Biates In 2012 the district has been bifurcated into two districts:- * East Jaintia Hills district headquartered at Khliehriat * West Jaintia Hills district West Jaintia Hills (Pron: ˈʤeɪnˌtɪə) is an administrative District in the state of Meghalaya in India. The united district (Jaintia Hills District) was created on 22 February 1972 and occupied an area of 3819 km2. It had a popul ... headquartered at Jowai References {{Reflist 1972 establishments in Meghalaya 2012 disestablishments in India Former districts of Meghalaya ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Debouch
In hydrology, a debouch (or debouche) is a place where runoff from a small, confined space discharges into a larger, broader body of water. The word is derived from the French verb ''déboucher'' (), which means "to unblock, to clear". The term also has a military usage. Geology In fluvial geomorphology, a debouch is a place where runoff from a small, confined space emerges into a larger, broader space. Common examples are when a stream runs into a river or when a river runs into an ocean. Debouching can generate massive amounts of sediment transport. When a narrow stream travels down a mountain pass into a basin, an alluvial fan will form from the mass deposit of the sediment. The four largest rivers (the Amazon, the Ganges-Brahmaputra, the Yangtze and the Yellow) are responsible for 20% of the global discharge of sediment in to the oceans by debouches. Geography In fluvial geography, a debouch is a place where a body of water pours forth from a narrow opening. Some examples ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapids
Rapids are sections of a river where the river bed has a relatively steep gradient, causing an increase in water velocity and turbulence. Rapids are hydrological features between a ''run'' (a smoothly flowing part of a stream) and a ''cascade''. Rapids are characterized by the river becoming shallower with some rocks exposed above the flow surface. As flowing water splashes over and around the rocks, air bubbles become mixed in with it and portions of the surface acquire a white color, forming what is called "whitewater". Rapids occur where the bed material is highly resistant to the erosive power of the stream in comparison with the bed downstream of the rapids. Very young streams flowing across solid rock may be rapids for much of their length. Rapids cause water aeration of the stream or river, resulting in better water quality. Rapids are categorized in classes, generally running from I to VI. A Class 5 rapid may be categorized as Class 5.1-5.9. While Class I rapids are eas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
