Zachary Sutton Make Up Lab 7 Water Quality- Stormwater Management
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Northern Arizona University *
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Dec 6, 2023
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LAB 7 Make Up: WATER QUALITY- STORMWATER MANAGEMENT Student
Answer Sheet
QUESTION 1 (1 point):
The storm drain system is designed to transport stormwater, which
is traditionally defined as water that originates from precipitation events such as rainfall
and snowmelt.
However, not all of the water that falls as precipitation becomes stormwater
runoff.
List all of the possibilities for what will happen to that water once it reaches the
ground.
Once the water reaches the ground it can be absorbed by the soil and plants. Also, the water
can become runoff or evaporate into the air.
QUESTION 2 (1 point):
How will the quality of the water change as it flows through
campus and toward the Rio de Flag?
The quality of water would change by becoming dirtier and more contaminated as it makes
contact with everything along campus.
For each numbered location 1A, 1B, and 1C, trace the path that the water would take by
drawing arrows on the map.
(1 point)
Stop at the point(s) where the water would leave the
quad area (stop 2 on the map).
Note: the photographs in Figures 3 and 4 may help you
decide where the water will flow.
If you are having trouble using the map and photographs
to indicate the direction of water flow, or if you are generally unfamiliar with the north
quad, you may choose to describe how the water will flow and why in a few sentences.
QUESTION 3 (1 point):
Contaminated stormwater runoff is one of the primary
contributors to water pollution in the United States today.
Think about the water as it flows
along these paths through the quad, parking lot, street, and eventually through
underground pipes.
What are some of the sources of pollution that it encounters before it
reaches this site.
Think about the thing you can see on streets, parking lots, gardens, lawns,
and buildings, as well as those that you cannot.
Be specific.
Some of the sources of pollution it encounters include things like trash left by people and
fertilizers used on local plants.
QUESTION 4 (1 point):
Why is an impervious surface problematic for managing
stormwater runoff?
What are specific problems that are caused when stormwater
encounters an impervious surface?
An impervious surface is problematic for managing stormwater runoff because it doesn’t
give the runoff anywhere to go causing flooding.
QUESTION 5 (2 points):
What is one advantage and one disadvantage to the design and
implementation of this particular basin?
An advantage to this basin is that it collects a good amount of water preventing flooding of
the parking lot. On the other hand, a disadvantage of this basin is that it doesn’t have many
large rocks to help filtrate.
QUESTION 6 (1 point):
How are these bioswales and stormwater planters designed to
function?
How do they improve the quality of stormwater runoff?
They’re designed to function by collecting storm runoff and filtering out the pollutants so
that the quality of the runoff is improved before it flows into nearby lakes and rivers.
QUESTION 7 (1 point):
What is one way that the infiltration basin near Babbitt Academic
Annex (Figure 13) is more effective than the one near the Wettaw Parking lot (Figure 10)?
One way the infiltration basin near Babbitt Academic is more effective is that it has more
large rocks that provide better filtration for the runoff.
QUESTION 8 (1 point):
Draw a simple sketch of a bioswale, rain garden, or infiltration
basin.
Label the aspects that help this feature slow down, capture, and retain stormwater
runoff before it can enter the storm drain system.
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QUESTION 9 (1 point):
How is this system helpful in addressing the problems associated
with stormwater management?
How is this system designed to capture rainwater?
Rainwater harvesting is helpful in addressing these problems because it provides a way for
the water to be saved and reused later. It captures this water by collecting rainwater that
falls on a roof and storing it in a tank.
QUESTION 10 (3 points):
After seeing a variety of stormwater control measures, list
pros/cons for each in the table below.
1) Stormwater Drains
2) Bioswales, rain
gardens, and infiltration
basins
3) Rainwater Harvesting
Systems (“rain barrels”)
Pro
Collects water and gets
it out of the way
Collects water and reuses
it to water plants
Collects water to be
stored and used for
drinking or watering
Con
Pollutes and wastes
water
Must be used
immediately and not
storable
Only collects water that
hits the roof and leaves
the rest
QUESTION 11 (1 point):
If you were given the task of testing the water from these
stormwater control measures which one do you think would result in the best and worst
quality water?
If I were to test the water from these stormwater control measures, I feel that the rainwater
harvesting system would be the best quality and stormwater drains would be the worst
quality.
QUESTION 12 (3 points):
How might you improve the stormwater management of the
quad and parking lot next to Morton Hall?
Specifically, which LID features would you utilize
and where?
You need to implement at least three features- you can show them by labeling
the following map or you can verbally explain what they are and where they are located.
I would improve the parking lot next to Morton Hall by adding bioswales or stormwater
planters near the outside to filter out the polluted water flowing from the parking lot. Also,
near these bioswales or stormwater planters in the parking lot I would add stormwater
drains to collect this runoff after it’s been filtered. Lastly, on the quad I would add an
infiltration basin near the middle to collect the storm runoff and prevent flooding.
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QUESTION 13 (2 points):
Choose one of these features and in the space below, sketch
what you envision it looking like.
Be as creative as you like, but make sure it is clear how
the feature would operate.
You can include an explanation with arrows, if that helps you
get your point across!
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