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  2. Drawdown (hydrology) - Wikipedia

    en.wikipedia.org/wiki/Drawdown_(hydrology)

    Cone of depression is a conically-shaped depression that is produced in a water table as a result of pumping water from a well at a given rate. [4] Groundwater is water located beneath the earth's surface in pores and fractures of soil and rocks. [6] Hydraulic head (or piezometric head) is a specific measurement of the potential of water above ...

  3. Torricelli's law - Wikipedia

    en.wikipedia.org/wiki/Torricelli's_law

    Torricelli's law describes the parting speed of a jet of water, based on the distance below the surface at which the jet starts, assuming no air resistance, viscosity, or other hindrance to the fluid flow. This diagram shows several such jets, vertically aligned, leaving the reservoir horizontally. In this case, the jets have an envelope (a ...

  4. Related rates - Wikipedia

    en.wikipedia.org/wiki/Related_rates

    The most common way to approach related rates problems is the following: [2] Identify the known variables , including rates of change and the rate of change that is to be found. (Drawing a picture or representation of the problem can help to keep everything in order)

  5. Groundwater recharge - Wikipedia

    en.wikipedia.org/wiki/Groundwater_recharge

    Groundwater recharge or deep drainage or deep percolation is a hydrologic process, where water moves downward from surface water to groundwater. Recharge is the primary method through which water enters an aquifer. This process usually occurs in the vadose zone below plant roots and is often expressed as a flux to the water table surface.

  6. Sedimentation (water treatment) - Wikipedia

    en.wikipedia.org/wiki/Sedimentation_(water...

    Overflow rate (v o) = Flow of water (Q (m 3 /s)) /(Surface area of settling basin (A(m 2)) In many countries this value is named as surface loading in m 3 /h per m 2. Overflow rate is often used for flow over an edge (for example a weir) in the unit m 3 /h per m. The unit of overflow rate is usually meters (or feet) per second, a velocity.

  7. Draft tube - Wikipedia

    en.wikipedia.org/wiki/Draft_tube

    Draft tube. A draft tube is a diverging tube fitted at the exit of a turbine's runner and used to utilize the kinetic energy available with water at the exit of the runner. [1] This draft tube at the end of the turbine increases the pressure of the exiting fluid at the expense of its velocity. This means that the turbine can reduce pressure to ...