A rivers flow is the volume of water that moves past point on the river in a given time. Volume of flow is also called discharge. As more water flows through a river, its speed increases. A flooding river can carry huge amounts of sand, soil, and other many
Rockslides are very common in the oversteepened canyons and drainages of Idaho, particularly in those areas like the Salmon River Canyon where more than 5,000 feet of elevation may exist between the ridge tops and the canyon bottoms. Debris Slide A debris slide is a small sudden downstope movement of unconsolidated material. This type of slide produces a hummocky surface of low relief. Mudflow A mudflow is a mass of saturated rock particles of all sizes. This type of landslide is caused by a sudden flood of water from a cloudburst in semi-arid country or a sudden thaw.
Water pollution can be very harmful and destructive to many animals and is a serious issue in the world today that we must face. The different types of water pollution are: chemical, nutrients, oxygen depleting, microbiological, and suspended matter. Chemical pollution is the result of industrial and agricultural chemicals such as metals, solvents, pesticides, and petroleum that run off into rivers, streams, and oceans. Nutrients are essential for plant growth but if there is too much it can result in an excessive amount of weeds and algae in the water that can contaminate drinking water, clog filters, and use up oxygen in the water that is needed for the organisms living in the water. Oxygen depleting pollution is caused by an increase in biodegradable substances which ultimately results in microorganisms using up the available oxygen.
The water passes the propeller, and goes to the river. The electricity generated by the hydro power plants, is used for almost all the things that surround us. The hydro power has its disadvantage and advantage. The hydropower dams cause several environmental issues. The damming rivers can alter wildlife habitats and river systems permanently.
The pressure of the ice often grows so high that pieces may crack off of the whole rock. Erosion is a natural process; but like many other natural processes, humans end up interfering in several different ways. When humans place too many animals on one piece of land, overgrazing can occur. After animals have eaten all the plant cover in an area, rain will fall directly on the uncovered soil. As the rain falls more rapidly, the soil will wash away faster
This controls flooding Water is usually stored in a reservoir behind the dam. This water can then be used to generate hydroelectric power or for recreation purposes. Building a dam can be very expensive. Sediment is often trapped behind the wall of the dam, leading to erosion further downstream. Settlements and agricultural land may be lost when the river valley is flooded to form a reservoir.
National Ocean Disasters Coastal destruction during a hurricane is mostly caused by high winds and storm surge. Storm surge is the abnormal rise of water generated by the storm. Storm Tides are the rise of the water due to storm surge and the astronomical tides. If a hurricane coincides with a normal high tide, the flooding can be extreme in the coastal areas. Storm surge has many factors as to how bad the storm surge will be.
In addition to the huge risks of drowning, polluted and unsafe recreational waters can lead to infections, due to the exposure to chemicals, injuries and death. Aquatic-based recreation can expose people to a variety of health risks, which vary according to the type of water, geographical location and local conditions. According to World Health Organization (WHO), “Millions of liters of raw or partially-treated sewage are pumped into seas every day, polluting the environment and resulting in an estimated 250 million cases of bathing-related gastroenteritis and upper respiratory disease each year” ("Healthy recreational waters-world," 2003). Pathogenic viruses and bacteria such as E. Coli are commonly found in untreated waste, which exposes anyone who participates in water-based recreation to such deadly illnesses. “The majority of outbreaks are caused by viruses or bacteria from fecal contamination” ("Healthy recreational waters-world," 2003).
Rejuvenation: What is it, what are its causes and its resulting landforms? Rejuvenation occurs when the base level that the river is flowing down to is lowered. Rejuvenation may result from causes which are dynamic, eustatic or isostatic in nature. All of these cause the river to undergo a sudden increase in vertical erosion as the river gains gravitational potential energy. Dynamic rejuvenation often occurs because of the uplift of a land mass.
This has lead to a greater use of energy, food and more relevant to this topic, a greater need for water. This puts immense pressure on the environment and policy makers to provide water for the increased number of people, who are not always located close to the usual water supplies and therefore exert additional pressures on already scarce supplies, which can lead to drought. In areas where water is scarce, groundwater pumping has been utilised to pump water to different locations. In India, this has caused a 100m fall in the water table, something only accelerated by further pressure on water supply. This brings in the