StreamsShorelinesClimateChange_4.22.2022
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Porterville College *
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Course
110
Subject
Geology
Date
Dec 6, 2023
Type
docx
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5
Uploaded by ChiefFishMaster618
Geology
Name: _____________________
Streams, Shorelines, and Climate Change Lab Report
Please record your responses in a
color other than black or red
.
Part 1: Mapping streams and drainage basins
Trace upstream
1.
Give the name and the latitude and longitude of the community you picked.
2.
What stream did you study? (Trace Origin Stream Name)
3.
What is the latitude, longitude, and elevation of the point on the stream that you
selected? [Trace Origin (latitude, longitude), Trace Origin Elevation (feet)]
4.
In how many named streams [Stream Names (count)] does the water flow to this point
in the stream?
5.
What is the total length of the stream(s) named in
Trace Upstream: question 4
? [Total
Length of Traced U.S. Streams (miles)]
6.
Through how many communities [Cities (count)] does the water flow before it gets to
this point?
Trace Downstream
1.
List the names of all of the streams in the downstream trace of the water, from
upstream (the starting red point in your map) to where it enters the “Outlet Waterbody”
(downstream end of the red line on your map).
2.
Through how many communities [Cities (count)] does the stream flow before it gets to this
point?
1
Streams and Shorelines Lab Report
3.
In how many named streams [Stream Names (count)] does the water flow to this point in
the stream?
4.
What is the total length of the stream(s) named in part 4d [Total Length of Traced U.S.
Streams (miles)]?
5.
What “Outlet Waterbody” does the stream’s water eventually empty into?
6.
What is the name of the last community or feature that the stream passes through before it
enters the “Outlet Waterbody”?
Stream Drainage
1.
What do you think happens to the amount of water in the stream drainage system, the
width of the streams, and the slope of the streams as the water drains from small tributaries
to the largest river?
2.
Why would a community located on or near a stream want to know where its stream water
comes from, and what else might they want to know about the water?
3.
Why would a community located on or near a stream want to know where its stream water
goes after passing their community?
Part 2: Modeling stream and shoreline processes
2
Streams and Shorelines Lab Report
Rainfall and snowmelt and stream modeling
1.
How would you model rainfall across the entire watershed?
2.
How would you model runoff in spring due to snowpack melt?
3.
How do you predict these two scenarios will differ in terms of erosion and or deposition of
sediment in the model stream?
4.
Include before (setup) and after (how many minutes of water flow?) sketches of the rainfall
model.
5.
Include before (setup) and after (how many minutes of water flow?) sketches of the snow
melt model.
6.
Are you surprised by either of the model results? Explain at least one detail that is surprising
or interesting, and what it might tell you about real world erosion or deposition.
Shoreline change due to wave action
1.
How do you predict wave action will change the shape of the model shoreline?
2.
Include before (setup) and after (how many minutes of wave action?) sketches of the model.
3
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Streams and Shorelines Lab Report
Part 3: Shoreline changes near Monterey over 100 years
1.
In Monterey, there is a body of water called Laguna del Rey. It is one golf tee looking lake in
1913, but two different lakes in 1947. It also has an outlet in 1947 but not in 1913. What
human-made features created these changes?
2.
The Presidio of Monterey has protrusions into Monterey Bay that were much different in
1913. Describe the differences and what these protrusions may be.
3.
What differences do you
observe in the Carmel River vicinity between the two topographic
maps provided? Be specific.
4.
Do human-made features change the topography of our waterways and shorelines slower or
faster than what would happen naturally over time? Explain your reasoning, and give at
least one example, from the lab or from your own experience.
Part 4: Looking to the future
1.
How do you think changes in high Sierra snowpack will change the topography and/or
water resources in California in the next ~100 years? Explain your reasoning.
(
If you
completed the wave action Stream Table model, use results of that model to support your
reasoning.)
2.
What are the estimated
lower limit
and
upper limit
for predicted sea level change in
California in the next ~100 years?
(
You can use the
Surging Seas Risk Zone Map.)
3.
Consider the
Surging Seas Risk Zone Map
for the Stockton delta
area. Approximately
how much area
do you expect to be under water in the next 100-200
years?
(
You might use Google Maps to estimate area.)
4.
How do you think this will impact communities in the Stockton area?
4
Streams and Shorelines Lab Report
5.
Based on flooding and then sedimentation of this area after the end of the last ice age
(see animation of
Post-glacial Flooding of San Francisco Bay
), what roles do you think
natural sedimentation (unfettered erosion and deposition by streams) and/or human
mitigation practices will play in dealing with the potential sea level change in the Stockton
area?
6.
How do you think the Monterey/Carmel shoreline will change in the next 100-200 years
due to predicted sea-level change? Color in a map of the area to show your predictions
on
your lab report
.
7.
How do you think this will impact communities in the Monterey and Carmel areas of the
coast?
8.
In your opinion, what are the biggest differences in how communities in the Stockton
area versus Monterey/Carmel might be impacted by the same sea level rise?
(
You might
consider
CA Coastal Commission
information.)
5