PAC_GEO_1301_Lab_2 (1) (3)
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University of Texas *
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Course
1301
Subject
Geography
Date
Dec 6, 2023
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LAB 2
–
Groundwater: Karst Features
(You MUST fill this section out)
Name: Jose Chavez
Class Section: 1301-010
Date: 10/11/2023
Understanding Natural Resources in the Hill Country
–
Here in
San Antonio we are sleeping, playing, working, and polluting directly above the
Edwards Aquifer. In this lab we will explore some of the springs that are found
throughout the Artesian zone. We will also learn about USGS discharge gauges.
Please follow all instructions carefully. If you have any problems, please ask a
colleague or your professor. Answer every question in complete sentences for full
credit.
1.
Go to
http://www.edwardsaquifer.net
/
2.
Check out the whole web site as a review on hydrology, especially the
“Introduction” Page
Give an excellent description of each hydrologic Zone within Bexar Co (4+
sentences EACH) drawing from information that you find on this website.
Example: Where are the zones, and what happens in each Zone? Hint: We have
all 4 and they are shown on the webpage graphic. (5 pts x 4 zones = 20 pts)
Contributing Zone: The contribution zone is about 5,400 square miles, and
elevations range from 1,000 to 2,300 feet above sea level. It occurs on the
Edwards Plateau. The contribution zone catches water from rainfall and goes into
other streams and infiltrates water table aquifer of the Plateau.
Recharge Zone: The Recharge zone allows large amounts of water to flow into
the aquifer. Around 80% of Recharge happens when streams and rivers cross the
permeable formation and go underground.
Transition Zone: From San Antonio to Austin there is limestones that overlie the
edwards, they are faulted, fractured, and have caves and skinholes. This is what
makes it a Transition Zone, It was also established to regulate petroleum, they
did this so there are place where the boundaries follow streets and railroad lines.
Artesian Zone: San Antonio relied on artesian wells when
they yet didn’t have
large wells which was in 1891. They are sandwiched between impermeable o less
permeable layers of rock or sediment.
3.
Scroll down to the Videos section (bottom right) of the
“Home”
web page.
4.
Pick one of the 7 Springs videos:
5.
Watch the video about your chosen Spring and read the web page.
List 5 unique and interesting facts (to you) about the Spring and talk about why,
on a personal level, you found them to be interesting (3+ sentences EACH):
(4pts x 5 facts = 20 pts)
Fact 1: The first Europeans to visit the San Marcos Springs were members of the
Domingo Terán de los Rios expedition in June of 1691. I find it very interesting
that Domingo Teran also became Governer of Texas from 1691 to 1692.
Fact 2: The Europeans found around 2,000 to 3,000 Indians upon approaching
the springs.
Fact 3: Several subsequent expeditions visited the Springs, and a short-lived
Spanish settlement occurred in 1755.
Fact 4:There was a theatre constructed there called the Mermaid theatre.
Fact 5: The article described the theatre as holding three million gallons of water
and being 30 feet deep.
6.
Let’s focus on one of
the springs! Go to the Comal Springs Discharge Page:
https://waterdata.usgs.gov/nwis/uv?site_no=08169000&legacy=1
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