WST 183 Water Sources
Assignment #2: Groundwater Sources
Instructions
Read the chapter specified in the text listed below, then answer the Study Questions. You will
maximize your learning and score if you answer the Study Questions in your own words.
Submit your answers to the Study Questions according to these guidelines:
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save your assignment as a Microsoft Word document;
format your assignment with no spaces between lines and with 1 inch margins on all
sides;
use normal font (no bold, italic or underline, please) Times New Roman (PC) font size 12
or Times (Apple) font size 12;
place the course number, the title of the assignment and your full name at the beginning
of your assignment;
list Study Question answers by number (it's not necessary to re-write the Study
Questions themselves);
submit the assignment as an e-mail attachment to the instructor at
Lshenk@greenriver.edu by the due date/time listed in the course schedule;
make it clear in your e-mail subject line which course and assignment number you are
submitting (for example, your e-mail subject line might read: WST 183 Reading
Assignment #1); and
submit each assignment as a separate e-mail (only one assignment per e-mail, please!).
Evaluation
In order to be accepted for evaluation, this assignment must be submitted by the due date/time
listed in the course schedule and in the format outlined in the instructions section above. The
instructor will randomly select study questions from this assignment for evaluation. Selected
study questions will be evaluated based on the following criteria:
2 points Response correctly answers the question, is factually correct; and is thorough.
2 points
Response demonstrates comprehension of material and understanding of concepts
by using student's own words.
1 point
Response demonstrates good writing skills including appropriate use of standard
English with attention to mechanics, grammar, punctuation and usage.
Text
Water Sources. Third Edition. Denver, Colorado: American Water Works Association, 2003.
(ISBN 1-58321-229-9).
Chapter
Chapter 2, “Groundwater Sources”
Study Questions
1. Describe what an infiltration gallery is and how it operates.
2. Name and define the principal parts of a well.
3. Describe each of the following well terms:
a. static water level
b. pumping water level
c. drawdown
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d. cone of depression
e. zone of influence
f. residual drawdown
g. well yield
h. specific capacity
Why is there no set safe distance between a contaminant and a well that applies in all
situations?
Explain how the direction of groundwater flow could change when a new well is put into
operation.
Describe each of the following types of wells:
a. dug
b. bored
c. driven
d. jetted
Describe each of the following special types of wells:
a. radial wells
b. gravel-wall wells
c. bedrock wells
Describe each of the following well components:
a. well casings
b. well screens
c. grouting
What does it mean to develop a well?
Describe one method that might be used to develop a well.
Describe the pumping tests that are conducted once a well is developed.
Discuss sanitary considerations to protect well water from surface contamination.
Describe each of the following methods of measuring water depth in wells.
a. chalked steel tape
b. electronic measurement
c. air-pressure tube method