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It depends on many factors. In urbanised areas, the surface run off is increased due to more impermeable materials (tarmac as opposed to a field). These impermeable surfaces don't allow as much (sometimes any) percolation, infiltration etc to happen. This means that the water travels faster by surface run off, therefore increasing the volume of water in the river. Areas of high density rain often make the river exceed the carrying capacity, and if sediment etc is washed in, the competence can be exceeded as well which can cause a flood. More water on a surface leads to more water into rivers. Take Boscastle in Southern England. I live near to Boscastle and in 2004 it flooded very badly due to the geology of the area (the rock type was highly impermeable), the urbanisation of the area, the fact that there is a confluence of 3 rivers there. There was also a large about of localised rainfall in the area in the weeks before saturating the ground. Its usually due to urbanisation and geology. There's many reasons, often a combination of them. I do A-level Geography in Dorset, further studying it at university. It's rarely just one thing.
What else can I help you with?
What are rain-fed rivers?
Rain-fed rivers are watercourses whose flow is predominantly sustained by precipitation in the form of rainfall. These rivers rely on seasonal rain patterns for their water supply and can experience fluctuations in water levels based on the amount of rainfall they receive.
If snow falls instead of rain Will it cause a flood more quickly?
No, in fact it is quite the opposite. If snow falls and remains on the ground, it helps to stagger the runoff into rivers so that flooding is less likely to occur. Though if a lot of rain ends up falling onto a snowpack, the flooding potential is then amplified.
Why is the rivers source in the highlands?
The rivers source is in the highland because that is where the rain falls and gets collected. love addie carter
What does rain collect in?
Rain collects in bodies of water such as rivers, lakes, and oceans, as well as in containers like buckets, ponds, and reservoirs. Additionally, rain can also be absorbed by soil and plants, contributing to groundwater.
What effect does acid rain have on lakes and rivers?
When acid rain enters lakes and rivers, it can turn the lake or river acidic if there is enough acid rain. This can kill the fish and anything living in the water. It can cause some of the aluminum in the surrounding soil to enter the water, which is also very toxic. Some types of plants are able to survive in water or soil of an acidic pH while others cannot.
Which rivers cause floods?
Well, mostly rivers where there is a lot of rain. All rivers could flood with enough rain.
What is the longest river in Malta?
There are no permanent rivers in Malta due to selective rainfall, meaning that the rivers dry out very quickly, only then leaving a ditch where the river was. Rain then falls and fills these ditches, creating rivers that only last for so long.
Why the rivers of south India are less suitable for irrigation than the rivers of north India?
the north indian rivers are perinnial as they are snow fed but the south indian rivers are seasonal as they are rain fed. Since they are rain fed there is no garranty of rain . So the south indian rivers are less suitable for irrigation than the rivers of north India.
Where do your rivers take their source?
in the rain
Do rivers precipitate?
No, because rivers aren't condensed clouds or rain.... ಠ_ಠ
What causes sudden rain?
water evaporating quickly from earth's surface and condensing quickly forming rain droplets.
What are some effects of acid rain?
Acid rain destroy's forest damages property and harms wildlife. Lakes and rivers are effected by acid rain because when the acid rain falls in to the lakes and rivers it turns into polluted water.
How does the Tigris and Euphrates rivers get their water?
It falls as rain/snow in the watershed of the two rivers.
What is the adverb in this sentence I ran quickly through the rain?
quickly
What makes the rain?
when the sun heat the rivers, it evaporate, and so the evaporation becomes rain.
What are rain-fed rivers?
Rain-fed rivers are watercourses whose flow is predominantly sustained by precipitation in the form of rainfall. These rivers rely on seasonal rain patterns for their water supply and can experience fluctuations in water levels based on the amount of rainfall they receive.
How quickly do you need to respond to an auto insurance adjuster?
As quickly as you can. Your claim is in limbo until you do.
