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Rain and Flooding

Rain is a type of precipitation which is readily absorbed by the ground. However, flooding might occur if there is a downpour or heavy rain. Flooding can result in damage to property, illness and even death.


Asked in Rain and Flooding, Grasslands


Seasonal grassland are found?

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   Seasonal grasslands can be found in places where there are drastic changes in the weather from one season to the next. For example, it could be found in the tundra and parts of the northern steppes, where the grassland turns to an icy desert in winter. It can also be found in North-Central Africa south of the Sahara Desert, in a region called the Sahel, where a deserted landscape could turn into a grassland during the rainy season.

Asked in Rain and Flooding, Snow and Ice


How many inches of snow would one inch of rain produce?

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   The ratio of snow to water can vary a great deal depending on the vertical profiles of temperature and moisture, and how they change during a storm. Typically 1 inch of rain is equal to 1 foot of snow, a 12-1 ratio. Depending on the temperature and moisture profiles of the snow growth region of the atmosphere and the origin area of the storm system, that ratio can go higher, say 20-1, which would be 20 inches, or lower, say 6-1 or so. 12-1 is most forecasters starting point, and if you go to your local NWS page and read the area forecast discussion, they usually tell what ratio they believe a system will have as it moves through your area.

Asked in Rain and Flooding, Geography, Lakes and Rivers


Why does river straightening reduce flood risk?

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   Straightening of river reduces floods in the immediate area because it allows the water to go straight instead of having to turn through curves. A natural meandering river has a curvy or sinusoidal shape to its path. A straight river would travel only a kilometer per kilometer of valley floor. Water associated with a curvy river will have to follow the natural sinusoidal curves and will travel considerably more distance per kilometer of valley floor. Also, water in a natural river will have a slower velocity because the course of the river is altered with every curve. A straight river sheds water faster from the immediate area because it has less distance to travel and is not slowed by the curves, however the straightening a river is associated with negative consequences including increased risk of flooding downstream and increased erosion. Increasing the velocity causes more erosion. If a river is straight then erosion digs the river into a deeper and deeper channel. A curvy river is
   typically has a slower velocity and erodes less. Also the erosion in a curvy river is associated with the 'cut bank' or outside of each curve not with a deepening channel as seen in straightened rivers. If you imagine yourself as a water molecule traveling down the river when you arrive at the outside of a curve your inertia will cause you to run into the 'cut bank' until the outer bank slows your speed and alters your course. You may have caused a slight bit of erosion but because you keep hitting curves you can not build up the speed needed to induce much erosion. After eroding from the "cut bank" sediment is often deposited in the 'point bar' or inside of the next curve. This causes the curves to slowly meander sometimes leaving 'ox bows' or multiple channels. Building roads or structures in these meandering curves is unwise as inevitably erosion will destroy the structure. The fast moving waters of a straight river can carry far more sediments down stream because of the increased
   velocity. Straightened streams often had to be lined with concrete or 'rip rap' where the original curvy river did not because the high velocity induced severe deepening of streams and both banks would then collapse in. Straitened rivers increase the risk of flooding downstream. A straight river or stream holds less water per distance unit of valley floor than a natural and curvy river. In a rain event a natural curvy river will hold more water. Also, since it is not slowed by the curves of a natural river, a straight river will shed what little water it holds faster. This is exacerbated by the draining of wetlands upstream and the tiling of agricultural lands to shed standing water. Wetlands and intermittent pools act as large sponges, holding and delivering rain and snow-melt slowly to downstream rivers. Furthermore, the loss of flood planes by building levies causes rivers to rise higher during flood events and again delivers more water downstream in a short amount of time. Floods
   downstream have become more 'flashy' and acute because of straightening of rivers, building of levies and draining of wetlands. A rain event in the Midwest of North America prior to European settlement would have induced far less of a flood height down stream than the same rain event would cause today. This is because the water would be delivered to downstream locations slowly over a greater duration of time.

Asked in Rain and Flooding, Gardening


Name a chore you might get out of doing if it rains?

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   Gardening Taking out the Trash washing the car raking mowing the lawn cleaning your windows

Asked in Rain and Flooding, Earth Sciences


What is the driving force for water intake?

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   thirst :) answer --> pressure differential

Asked in Rain and Flooding, Earth Sciences, Water Cycle


What role does temperature play in the water cycle?

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   If the temperature is on the higher side, water from the rivers, oceans evaporate at a faster pace. The more the heat in the summer, the more the possibility of excessive rain during rainy season. In this way, temperature plays a crucial role in the water cycle.

Asked in Rain and Flooding, Lakes and Rivers


How do rivers contribute to flooding?

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   Floods are natural events. They mainly happen when the river catchments, (that is the area of land that feeds water into the river and the streams that flow into the main river) Which receives greater than usual amounts of water Here is an example through rainfall or melting snow. The river cannot cope and this extra water causes the level of the water in the river to rise and a flood to take place. This flooding may take place at any point along the river course and not necessarily at the place where the extra water has entered.

Asked in Ancient History, Rain and Flooding, The River Nile


How far does the nile rivers flood plain stretch?

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   it doesn't anymore. a dam was built in 1970 so the river doesn't flood anymore.

Asked in Environmental Issues, Rain and Flooding, Natural Disasters


Which are the most vulnerable homes during floods?

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   MOST VULNERABLE HOMES 1. Buildings, which are constructed with earth-based materials or using stone and brick in mud mortar are highly vulnerable to damage in heavy rains and/or floods. 2. The huts made from biomass materials like bamboo, leaves, thatch or light construction using metal sheets are easily destroyed in floods and washed away. 3. The occupation of areas within the flood plain of rivers has increased the vulnerability, especially in areas of high population concentration. Flood plains attract poor people because of inexpensive land values.

Asked in Rain and Flooding, Air Pollution


How is pollution related to acid rain?

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   it goes into the atmosphere and the clouds absorb it and if there is sulphur in the pollution it then mixes with the water in the clouds and rains it back down as acid rain

Asked in Rain and Flooding, Definitions, Prefixes Suffixes and Root Words


What is the the prefix meaning for water?

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   Greek: Hydro- Hydra- Latin: Aqua- Aque-

Asked in Rain and Flooding


What is average rainfall in Washington state?

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   27.66 inches per year

Asked in Rain and Flooding, Deserts


How long can some desert places go without rain?

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   There are some deserts, such as the Atacama Desert of South America where parts have not received any significant precipitation in centuries.

Asked in Rain and Flooding


How do you make rain go away?

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   You pray to God or do the rain dance (look up "Rain Dance" on Youtube.)

Asked in Rain and Flooding


Why does the southwest monsoon bring heavy rains?

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   The air is carrying much moisture.

Asked in Meteorology and Weather, Rain and Flooding


Is red sky in the morning sailors take warning red sky at night sailors delight is based on a myth or a fact?

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   Both, but more on fact. Since the sun comes up in the east, a red sky in the morning often means there is adverse weather developing, whereas if there's red sky at dusk, then the inclement weather has passed and there will be a nice day the following day. _______________________________ It's a simplification based on the fact that most weather systems move from west to east. It's not a "fact", but it is based on probable events in the next 12 to 24 hours.

Asked in Rain and Flooding


Where does it rain the most in the US?

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Asked in Rain and Flooding


What effects do floods have on buildings?

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   EFFECT ON BUILDINGS The damage to buildings due to floods are as follows: 1) Houses are washed away due to the impact of the water under high stream velocity. The houses are commonly destroyed or dislocated so severely that their reconstruction is not feasible. 2) Houses constructed out of light weight materials like wood float when they are not anchored properly. 3) Damage caused by inundation of house. The house may remain intact on its foundation, but damage to materials may be severe. Repair is often feasible but may require special procedures to dry out properly. 4) Undercutting of houses. The velocity of the water may scour and erode the foundation of the house or the earth under the foundation. This may result in the collapse of the house or require substantial repair. 5) Damage caused by debris. Massive floating objects like trees, electric poles, etc. may damage the standing houses.

Asked in Rain and Flooding, Snow and Ice


How much is 15cm of snow in inches?

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   Just convert cm to inches. If there is 2.54 cm in 1 inch. 5 inches of snow.

Asked in Rain and Flooding


How big are raindrops?

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   About the size of a pea

Asked in Mining, Rain and Flooding


What happens to ore after it's been mined?

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   Extracted Ore is crushed smelted, a chemical process usually requiring huge quantities of heat at very high temperature, to extract the metal from the mineral that was the ore. Eventually each specific ore deposit is exhausted and the mine falls into disuse.

Asked in Rain and Flooding, Air Pollution


What type of energy causes acid rain?

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   Non renewable energy along with other pollutions.

Asked in Tundra, Rain and Flooding, Ecosystems


How does acid rain effect the tundra?

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   it makes leaves to turn brown as in autum and fall and sickens animals

Asked in Rain and Flooding, Snow and Ice


How much rain is in 1 foot of snow?

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   One inch typically

Asked in Rain and Flooding, Air Pollution


How does acid rain affect buildings and structures?

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   the acid erodes the surfae of the building
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