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1192046 Pages: 3

What are the zones of a storage reservoir?

Derive an expression to find the discharge through an Unconfined aquifer.

A gravity well has a diameter of 65 cm. The depth of water in the well is 45 m
before pumping has started. When pumping is done at the rate of 40 litres/s, the
drawdown in a well 12 m away is 4.5 m and in another well, 24 m away, the
drawdown is 3m. Determine i) Radius of zero drawdown ii) Coefficient of
permeability iii) Drawdown in the well iv) Maximum rate at which water can be
discharged from the well.

What are the types of Dam Reservoirs?

During a Recuperation test, water in an open well was depressed by pumping by
3 metres and it recuperated 2 metres in 75 minutes. Find i) Yield from a well of
4m diameter under a depression head of 4 metres ii) Diameter of the well to
yield 600 litres/minute under a depression head of 2.5 metres.

Describe the use of Mass Inflow curve to determine capacity of a reservoir.
Describe the divisions of Subsurface water.

Define i) Coefficient of Transmissibility ii) Storage coefficient

What is Trap efficiency? What is its significance?

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