In this problem, you will analyze drawdown data from a confined aquifer test to estimate key hydraulic properties — transmissivity (T) and storativity (S) — using both Excel and the MAGNET4WATER aquifer test tool. You will apply the Jacob-Cooper approximation to interpret late-time drawdown behavior and compare your results with a calibrated Theis solution. This exercise will help you understand how aquifer properties shape groundwater response and how different methods support diagnostic insight.

Theis (1935) presented an exact analytical solution for the transient drawdown in an infinite uniform confined aquifer. Use an analytical approach to calculate the influence of radius for the given parameters. Then develop a IGW-NET model to reproduce the Theis solution and to perform sensitivity analysis with respect to aquifer parameters and pumping rate.

The Radius of Influence, R(t), is the horizontal radial distance from a well to the points in an aquifer where there is negligible influence from pumping. Show that R(t) is proportional to sqrt(T/St); explain why why the impact of pumping on a confined aquifer is dramatically larger than that on a unconfined aquifer; and develop a IGW-NET model that can reproduce the Theis solution and perform a sensitivity analysis with respect to hydraulic conductivity, storage coefficient, and time.

Beginner to Advanced - analytical and numerical sub-problems, which can be done sequentially or individually. Background: A dispute has arisen between two farmers after one of the farmers installed a 500 GPM irrigation well 2000 ft. from the small domestic water supply well of the other farmer (see above). After the irrigation well had been operating for 3 months it was observed that the water level in the domestic well had declined over 30 feet. The owner of the domestic well claims that the decline in water level in his well is due to pumping from the irrigation well and is trying to restrict that pumping. The owner of the irrigation well claims that the decline is related to the recent drought; he has been advised that the "radius of influence"" of his well is at most 500 feet."

Beginner to Advanced - analytical and numerical sub-problems, which can be done sequentially or individually. Background: A dispute has arisen between two farmers after one of the farmers installed a 500 GPM irrigation well 2000 ft. from the small domestic water supply well of the other farmer (see above). After the irrigation well had been operating for 3 months it was observed that the water level in the domestic

A dispute has arisen between two farmers after one of the farmers installed a 500 gpm irrigation well 2000 ft. from the small domestic water supply well of the other farmer. After the irrigation well had been operating for 3 months it was observed that the water level in the domestic well had declined over 30 feet. Determine whether it is possible for the water level decline in the domestic well to be produced by pumping from the irrigation well.

Specific capacity is defined as the rate of discharge of a well per unit depth of drawdown. Probe analytical solutions and develop a IGW-NET model to simulate flow in a specific area given specific capacity measurements distributed across space.

The drawdown due to pumping will be greater near the boundary when a confined aquifer is bounded on one side by a straight-line impermeable boundary. Develop a IGW-NET model that can reproduce the analytical solution by applying the model to a specific situation.

When a Confined aquifer is bounded on one side by a straight constant head boundary, drawdown due to pumping will be less near the boundary. Develop a IGW-NET model that can reproduce the analytical solution

When pumping near a stream, we are interested not only in the resulting drawdowns, but also in the depletion of the stream flow, resulting in potentially adverse impact of groundwater dependent ecosystems. Develop a more general IGW-NET numerical model that can reproduce the above analytical solution and perform a sensitivity analysis of stream depletion with respect to the following parameters: aquifer conductivity; storage coefficient; regional hydraulic gradient; stream bed leakance; heterogeneity; presence of other interacting sources and sinks.

You are asked to design an aquifer pumping test using M4W IGW-NET in an unconfined aquifer consisting of outwash sand similar to that on Cape Cod. Your design should include specific recommendations of pumping rate, test duration, and any other factors which you consider to be important.