In my class called Water, we learned how Bernoulli’s
equation can be used to predict where pollution in groundwater will travel
based on relative pressures in an aquifer. The forces acting on the groundwater
are gravity, atmospheric pressure, and molecular attraction from surface
tension. Scientists can drill and observation well down to the water table of
an aquifer and predict how high the water will rise by considering these forces
acting on the water. Bernoulli’s equation can be rewritten and simplified for
this special case by putting all variables in terms of length or height. In
addition, the kinetic energy term is ignored because groundwater flow is
generally very slow. The result is:

z+ (P/ρwg)=h

Scientists can then solve for the relative pressures at various locations, and use it to find where the most pollutants will be located - areas of low pressure, since liquids move from high pressure to low pressure.

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