A mother, we know, has to suffer for her children. It has been estimated that 75 percent of the potential hydropower in the contiguous United States has been developed, and about 13 percent of the total annual electrical energy demands of the country are met by hydroelectric power plants.
This also results in the breeding of mosquitoes and other insects that are infectious and cause appalling diseases. In some cases, this lowering of the river bottom has caused the water table of the surrounding area to drop, which has adversely affected agriculture. Although upper limits for concentrations of unquestionably toxic chemicals such as arsenic, barium, cyanide, lead, and phenols have been established for drinking water, no general rules exist for the treatment of industrial wastes because of the wide variety of organic and inorganic compounds involved.
Such storage opportunities are typically increased in catchments of larger size, thus leading to a lower yield and sediment delivery ratio. Thus, baseline data provide comparisons of the same site through time, whereas reference data provide comparisons among sites at the same time.
The actual width of the river varies from about m at rocky narrows to 5 km including flooded areas. An alternative or conjoint possibility is that continued irrigation promoted progressive salinization of the soils of irrigated lands, eventually preventing effective cropping.
The idea that local features of a stream or river are created, undergo change through time, and eventually disappear, while the overall pattern e. At the same time, it can be argued that early riverine and river-dependent civilizations bore the seeds of their own destruction, independent of major climatic variations and natural evolutionary changes in the river systems.
River restoration and river monitoring must take the structural and functional organization of river systems into account. The hyporheic zone may extend many stream widths to either side of the channel.
Birds such as kingfishers eat small fish from the river. How hard their journey is! Quantitative data are lacking on the extent of watershed and bank treatment and returns of native fish. The National Academies Press. In the Mississippi Delta, similar impoundments and practices drastically reduce the access of fish and crustaceans to freshwater marshes that are utilized as nurseries Herke et al.
And, what is more, it is our own mother. It also may cause rapid depletion of the oxygen supply by promoting algal blooms. The term upriver or upstream refers to the direction towards the source of the river, i.
River water is turned into a new power called electricity, and thus, in turn, helps our trade and industry. The food energy that remains from the upstream part is used downstream. They feed not only our land and plants but also our mills and factories.Rivers carry water and nutrients to areas all around the earth.
They play a very important part in the water cycle, acting as drainage channels for surface water. Rivers drain nearly 75% of the earth's land surface. Rivers provide excellent habitat and food for many of the earth's organisms.
Many. Short essay on Importance of Rivers in India Category: Essays, Paragraphs and Articles On December 26, By Vikash Pathak The rivers in India are all holy.
introduction—importance of rivers and streams The intensive use of rivers and streams for industrial and municipal water supply, irrigation, transportation, hydropower, cooling of thermoelectric generating plants, assimilation of human waste, and commercial fisheries is summarized in a variety of compendia (CEQ, ; Guldin, ).
Chapter 1 The Importance of Rivers 1. Why Study Rivers?
2. Rivers as Landscape Elements in the Arts 3. Rivers as Hazards 4. Rivers as Resources 5. Rivers as Recreational Assets 6. Rivers as Transportation Corridors examples of the importance of rivers and is not meant to be exhaustively comprehensive; you are. River: River, (ultimately from Latin ripa, “bank”), any natural stream of water that flows in a channel with defined banks.
Modern usage includes rivers that are multichanneled, intermittent, or ephemeral in flow and channels that are practically bankless. The concept of channeled surface flow, however. Because fish originate in ponds, rivers, streams, lakes, and oceans that have different pH levels, their needs are different.
Saltwater fish prefer an alkaline pH of or above.
Freshwater fish thrive in a range lower than that, somewhere between anddepending on the specific species.Download