which one of the following is not associated with reducing the run off loss of water
Answers
Surface runoff (also known as overland flow) is the flow of water occurring on the ground surface when excess rainwater, stormwater, meltwater, or other sources, can no longer sufficiently rapidly infiltrate in the soil. This can occur when the soil is saturated by water to its full capacity, and that the rain arrives more quickly than the soil can absorb it. Surface runoff often occurs because impervious areas (such as roofs and pavement) do not allow water to soak into the ground. Surface runoff is a major component of the water cycle. It is the primary agent of soil erosion by water.[1][2] The land area producing runoff that drains to a common point is called a drainage basin.Runoff that occurs on the ground surface before reaching a channel can be a nonpoint source of pollution, as it can carry man-made contaminants or natural forms of pollution (such as rotting leaves). Man-made contaminants in runoff include petroleum, pesticides, fertilizers and others.[3]
In addition to causing water erosion and pollution, surface runoff in urban areas is a primary cause of urban flooding, which can result in property damage, damp and mold in basements, and street flooding.
Water runoff loss is not associated with tress and forests as they reduce this type of loss of water.
- Surface runoff of water is a process of flow of water from rain, melting of snow, etc.
- When the runoff occurs at the surface before reaching the channel is called overland flow.
- When runoff occurs on the land, the water picks up soil particles, contaminants that are present in the soil, petroleum products, etc.
- Factors like urbanization increase runoff. Due to the construction of pavements the water is not allowed to flow towards the ground to recharge the groundwater.