The reduced infiltration of rainwater into the
ground causes surface runoff
, and the discharge of rainwater into receiving water bodies, which often increases flood peaks, reduces the level of groundwater and leads to serious flooding in urban areas (Sangati et al.
What affects the infiltration of water?
Soil texture
, or the percentage of sand, silt, and clay in a soil, is the major inherent factor affecting infiltration. Water moves more quickly through the large pores in sandy soil than it does through the small pores in clayey soil, especially if the clay is compacted and has little or no structure or aggregation.
What are some characteristics that affect infiltration?
- the soil type (texture, structure, hydrodynamic characteristics). …
- the soil coverage. …
- the topography and morphology of slopes;
- the flow supply (rain intensity, irrigation flow);
- the initial condition of soil humidity.
What is the importance of infiltration?
Infiltration is extremely important, because it
determines not only the amount of water that will enter a soil
, but also the entrainment of the “passenger” chemicals (nutrients and pollutants) dissolved in it. FIGURE 13.1. Wet fronts for a sandy loam soil.
How does infiltration affect the land?
Agriculture
and the tillage of land also changes the infiltration patterns of a landscape. Water that, in natural conditions, infiltrated directly into soil now runs off into streams. Slope of the land: Water falling on steeply-sloped land runs off more quickly and infiltrates less than water falling on flat land.
How do you control infiltration?
The simplest way to control the building infiltration is
to offset the ventilation or outdoor air intentionally brought into the building from the exhaust or relief air expelled from the building
.
How do humans affect infiltration?
Infiltration is a complex process, controlled by a large number of factors and widely influenced by human activities. … Most human activities affect the hydrologic cycle by
decreasing infiltration and increasing overland flow
, but interventions in urban areas have begun to increase the infiltration of storm water.
What is infiltration short answer?
Infiltration is the
process by which water on the ground surface enters the soil
. Infiltration is governed by two forces, gravity, and capillary action. … Infiltration rate in soil science is a measure of the rate at which a particular soil is able to absorb rainfall or irrigation.
What could cities do to increase infiltration?
Stormwater infiltration in urban areas can be enhanced by
the disconnection of impervious surfaces and by the improvement of pervious surfaces such as turf
.
What are the six factors that affect infiltration?
- Precipitation.
- Soil characteristics.
- Soil moisture content.
- Organic materials in soils.
- Land cover.
- Slope.
- General hydrologic budget.
- Richards’ equation (1931)
What are the stages of infiltration?
- Skin blanched. Edema < 1 inch in any direction. Cool to touch. With or without pain.
- Skin blanched. Edema 1-6 inches in any direction. Cool to touch. With or without pain.
- Skin blanched, translucent. Gross edema > 6 inches in any direction. Cool to touch. Mild-moderate pain. Possible numbness.
How does infiltration occur?
Infiltration occurs
when surface water enters the soil
. This process is similar to pouring water onto a sponge. … At this point, the soil becomes saturated, but the excess water has to go somewhere. When this happens, we get overflow in the form of runoff, which is when surface water flows over land.
What is an example of infiltration?
The gang was infiltrated by undercover agents
. Attempts to infiltrate undercover agents into the gang have failed. Water can easily infiltrate the soil.
How does temperature affect infiltration?
The infiltration performance of the site is the focus of the study. … The governing factor affecting
hydraulic conductivity
and, subsequently, infiltration rate is temperature; with higher rates occurring during warmer periods, affecting the infiltration rate by as much as 56%.
What is a good infiltration rate?
Soil type Basic infiltration rate (mm/hour) | sand less than 30 | sandy loam 20 – 30 | loam 10 – 20 | clay loam 5 – 10 |
---|
Why is infiltration important in your course?
Why it is important: Infiltration is
an indicator of the soil’s ability to allow water movement into and through the soil profile
. … Ponding and soil saturation decreases soil strength, destroys soil structure, increases detachment of soil particles, and makes soil more erodible.