Water naturally goes with the downgrade so when the water can't go into the ground it flows down resulting in what we call a flash flood.
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When the ground is saturated, rainfall is unable to infiltrate into the soil and instead runs off the surface, increasing the risk of flooding and erosion. This can lead to surface water accumulation and potential waterlogging of the area.
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what happens to the ground is it is stripped of its oxygen levels and the water begins to overflow and run off
The Cumbria flood in 2009 was caused by heavy rainfall that overwhelmed rivers and drainage systems in the region. The prolonged and intense rainfall led to significant flooding across Cumbria, impacting homes, roads, and infrastructure. The flood was exacerbated by the already saturated ground from previous rainfall events.
Overland flow refers to the movement of water over the land surface, typically as a result of precipitation or snowmelt. This runoff can occur when the ground is saturated, impermeable, or when the rainfall intensity exceeds the infiltration capacity of the soil.
Earthflow occurs in areas with steep slopes where the soil becomes saturated with water, causing it to flow downhill. This process is common in regions with clay-rich soil and heavy rainfall.