What Is Meant By Aquitard?


An aquitard is any geological formation of a rather semipervious nature that transmits water at slower rates than an aquifer. Freeze and Cherry (1979) describe an aquitard as the less-permeable beds in a stratigraphic sequence.



What is an aquifer Mcq?

An aquifer is a saturated formation of earth material from which water is yield in sufficient quantity, due to the high permeability of earth material. Unconsolidated deposits of sand and gravel are good for aquifer formation. Groundwater is generally extracted from aquifers, so it is of much importance to us.


What is permeability in groundwater?

Permeability is a measure of the degree to which the pore spaces are interconnected, and the size of the interconnections. Low porosity usually results in low permeability, but high porosity does not necessarily imply high permeability.


What is aquitard and aquiclude?

Aquitard:A geologic formation, group of formations, or part of formation through which virtually no water moves. Aquiclude:A saturated, but poorly permeable bed, formation, or group of formations that does not yield water freely to a well or springs.


What are rock formations called?

A rock formation is an isolated, scenic, or spectacular surface rock outcrop. Rock formations are usually the result of weathering and erosion sculpting the existing rock. The term rock formation can also refer to specific sedimentary strata or other rock unit in stratigraphic and petrologic studies.


What defines the water table?

The water table is an underground boundary between the soil surface and the area where groundwater saturates spaces between sediments and cracks in rock. Water pressure and atmospheric pressure are equal at this boundary.


What is water bearing formation?

Water-Bearing Formation means any geologic formation that contains water.


What is static level?

Static water level refers to the level of water in a well under normal, undisturbed, no-pumping conditions. Static water level is best determined when the well has not been pumped for several hours prior to measuring. You may get a false reading if the well was pumped just before the static water level is measured.


What is an artesian well Mcq?

Artesian well, well from which water flows under natural pressure without pumping. It is dug or drilled wherever a gently dipping, permeable rock layer (such as sandstone) receives water along its outcrop at a level higher than the level of the surface of the ground at the well site.


What is Aquiclude Mcq?

Aquiclude: It is a geological formation which is impermeable to the flow of water.


Which aquifer is called as water table aquifer?

Clarification: Unconfined aquifer is also called a water-table aquifer, and is the most common type encountered in the fields. 3.


What is borehole pumping test?

A pumping test consists of pumping groundwater from a well, usually at a constant rate, and. measuring water levels in the pumped well and any nearby wells (observation wells) or surface water. bodies during and after pumping.


What is meant by Aquitard?

An aquitard is any geological formation of a rather semipervious nature that transmits water at slower rates than an aquifer. Freeze and Cherry (1979) describe an aquitard as the less-permeable beds in a stratigraphic sequence.


What is an artesian flow?

A flowing artesian well is one that has been drilled into an aquifer where the pressure within the aquifer forces the groundwater to rise above the land surface naturally without using a pump .


What is a perched aquifer?

Perched aquifers occur above discontinuous aquitards, which allow groundwater to “mound” above them. Thee aquifers are perched, in that they sit above the regional water table, and within the regional vadose zone (i.e. there is an unsaturated zone below the perched aquifer).


What is water table and aquifer?

The upper surface of this water-filled area, or "zone of saturation", is called the water table. The saturated area beneath the water table is called an aquifer, and aquifers are huge storehouses of water.


How groundwater is generated?

Most groundwater comes from precipitation. Precipitation infiltrates below the ground surface into the soil zone. When the soil zone becomes saturated, water percolates downward. A zone of saturation occurs where all the interstices are filled with water.


How is pump power calculated?

Pump Power calculation Formula:

Pump Power P(kW) = q(m3/hr) x ρ(kg/m3) x g(m2/s) x h(m) x p(Pa) / 3600000. The same way pump power in horsepower formula can be written as, Pump Power P(HP) = q(m3/hr) x ρ(kg/m3) x g(m2/s) x h(m) x p(Pa) / 2685600. Also above pump power is required to lift the liquid to head meters.


What is the Speciality of the artesian water * Mcq?

What is the speciality of the Artesian Water? Explanation: When water is tapped from Artesian aquifers, it rushes up to and to great heights. Such wells are called Artesian wells, or flowing wells and the type of groundwater obtained from them, which often needs no pumping, as Artesian Water.


What are the 3 types of aquifers?

Figure 2 is a simple cartoon showing three different types of aquifers: confined, unconfined, and perched. Recharge zones are typically at higher altitudes but can occur wherever water enters an aquifer, such as from rain, snowmelt, river and reservoir leakage, or from irrigation.


Your comment

+