Analysis Methods
An appropriate model or solution to the groundwater flow equation must be chosen to fit to the observed data. There are many different choices of models, depending on what factors are deemed important including:
- leaky aquitards,
- unconfined flow (delayed yield),
- partial penetration of the pumping and monitoring wells,
- finite wellbore radius — which can lead to wellbore storage,
- dual porosity (typically in fractured rock),
- anisotropic aquifers,
- heterogeneous aquifers,
- finite aquifers (the effects of physical boundaries are seen in the test), and
- combinations of the above situations.
Nearly all aquifer test solution methods are based on the Theis solution; it is built upon the most simplifying assumptions. Other methods relax one or more of the assumptions the Theis solution is built on, and therefore they get a more flexible (and more complex) result.
Read more about this topic: Aquifer Test
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