# Question 4.6: A community well system is to provide 11,450 m³/d for the av...

A community well system is to provide 11,450 m³/d for the average day at its design life. The minimum demand at the beginning of the design life of the well field is estimated to be 3,800 m³/d. A hydraulic analysis of three wells operating at a maximum day demand of 22,900 m³/d sustained for a 10-day period will lower the piezometric surface to the bottom of the confining layer of the artesian aquifer. The distribution system has storage capacity for one day at the maximum demand.

Recommend a well system (number of wells and pumping rate) for this community.

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Question: 4.7

## Because individual shallow wells in the community have become contaminated, the village of Knotwell has decided to provide a well system for the community. A two-well system with elevated storage has been proposed. System water pressure will be maintained by the elevated storage tank. The design ...

a. Number of wells Two wells will be provided. One...
Question: 4.5

## A very small village has an average day design demand of 190 m³/d and a maximum day design demand of 380 m³/d. They will have a distribution system. Compare the number of wells and the capacity of each well for a system that includes the wells and one elevated storage tank and a system that does ...

To meet regulatory redundancy requirements there m...
Question: 4.2

## If the storage coefficient is 2.74 × 10^-4 and the transmissivity is 2.63 × 10^-3 m²/s, calculate the drawdown that will result at the end of 100 days of pumping a 0.61 m diameter well at a rate of 2.21 × 10^-2 m³/s. ...

Begin by computing u. The radius is 0.305 m and [l...
Question: 4.4

## Three wells are located at 75-m intervals along a straight line. Each well is 0.50 m in diameter. The coefficient of transmissivity is 2.63 × 10^-3 m²/s, and the storage coefficient is 2.74 × 10^-4. Determine the drawdown at each well if each well is pumped at 4.42 × 10^-2 m³/s for 10 days. ...

The drawdown at each well will be the sum of the d...
Question: 4.3

## Determine the transmissivity and storage coefficient for the Nosleep’s well field based on the pumping test data plotted in Figure 4-9. ...

Using Figure 4-9, we find $s_{1}$ = 0...
The volume of water in the well is V  =  (1...