RIVERS

LAB EXERCISE

Due via Canvas by the end of 1/28/21

Download Assignment Sheet Here as a PDF file

or

Download Assignment Sheet Here as MS-Word

VERY IMPORTANT - Please type your answers in RED on the assignment sheet above (PDF or Word).

There are valuable explanations and instructions on the assignment sheet. You will need to go back and forth from this webpage to the assignment sheet to make sure you are doing everything properly. Read it all!

There is no reason to get anything wrong on a Lab Exercise. Don't just guess at an answer. If you are confused, then send me an e-mail (rhunckler@sc4.edu). This is why I give you a week to complete the Lab Exercises. You should understand it all when you submit it and this will help you for the Quiz as well. I am happy to look over your answers in advance. Remember to give me at least 24 hours to respond.

Submit your completed assignment sheets through Canvas. To do this, log in to GEO 101 in Canvas and click on "Assignments" in the left hand column. Please let me know if you have questions.

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Section A

Here are the two largest rivers in the world (based on average discharge at the mouth of each river). Remember that discharge amounts change seasonally (and even daily). The values below are averages:

      1. Amazon River in South America = 209,000 cubic meters per second - source

      2. Congo River in Africa = 42,000 cubic meters per second - source

Notice that the Amazon River is five times larger than the Congo River. THE AMAZON IS HUGE!

The Amazon is also the second longest river on Earth at 6400 km (4000 miles). Only the Nile River is longer than this (6560 km or 4100 miles). However, the average discharge of the Nile River is only 2800 cubic meters per second. The Nile River has low volume despite its great length.

Follow the instructions on your assignment sheet for section A.

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Section B

The following table of river data is a bit of a challenge. I will admit that it could be set up better, but I'm asking you to gather some information from this table. Be alert! The first thing you need to know is that the rivers listed in the table are in alphabetical order. So do not list the first five rivers on the list in order to answer anything below. The second thing you need to know is that the rankings for each of the three columns is found in parentheses next to each value. The third thing you need to know is that B1 to B10 will need three zeros added to the values given in the table. For instance, if the table says 117, you would need to write down 117,000. And if the table says 2,482 you would need to write down 2,482,000. At the top of these two columns, it states that the units are in 1000s. The last column (for B11 to B15) does not need any zeros added. The values listed here are the true values.

Here is the link to the table. You will need to scroll down a little once you click on this link:

Longest / Largest Rivers in the United States

B1 to B5

What are the five largest rivers in the United States based upon average discharge at the mouth? List the five rivers in order starting with the largest (B1 = largest, then B2, B3, B4 and B5). Rankings can be found in parentheses next to the discharge amount. Also list the actual discharge amounts (please note that the column for discharge is divided by 1000 - see top of column for clarification). Please list the actual discharge of each river.

B6 to B10

What are the five largest drainage areas in the United States? List each of the five river drainage areas in order starting with the largest (B6 = largest, then B7, B8, B9 and B10). Rankings can be found in parentheses next to the area. Also list the size of each area (please note that the column for drainage area is divided by 1000 - see top of column for clarification). Please list the actual size of each drainage area.

B11 to B15

What are the five longest rivers in the United States? List the five rivers in order starting with the longest (B11 = longest, then B12, B13, B14 and B15). Rankings can be found in parentheses next to the length. Also list the actual length. Please note that there is a tie between 4th and 5th longest and they are both listed as #4. Also convert to kilometers (see assignment sheet).

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Section C

Mississippi River Facts

C1. What is the average discharge (listed as "flow rate" and "volume") at the beginning of the river - at Lake Itasca?

C2. What is the average discharge at the mouth of the river - at New Orleans?

C3. What is the elevation of the river at Lake Itasca? (go to google.com and enter "elevation of lake itasca").

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Section D

Real Time River Data (Black River)

D1. Write down the date for which you will be answering the following questions (it makes a difference).

D2. Where is this gauging station located? (not Lansing Field Office)

D3. What is the current discharge. Don't try to guess it based on the graph. There is a table with actual values (look for the table of numbers in between the two graphs "Most Recent Instantaneous Value").

D4. What was the minimum discharge and when did it happen?

D5. What was the maximum discharge and when did it happen?

D6. What is the mean discharge?

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Section E

Real Time River Data (St. Clair River) - Give this page 15 to 20 seconds to fully load.

E1. Write down the date for which you will be answering the following questions (today's date)

E2. What is the current discharge. Don't try to guess it based on the graph. There is a table with actual values (look for the table of numbers in between the two graphs "Most Recent Instantaneous Value").

E3. Copy your answer from A1 above.

E4. Divide your answer from A1 by your answer from E2. The Amazon River is this many times larger than the St. Clair River (in terms of discharge). Round your answer to the nearest whole number - no decimals.

Click here to answer E5 & E6 -- St. Clair River Data since 2008

E5. What was the minimum discharge since 2008 and when did it happen? Click on the discharge column heading only once and wait for the column to rank itself. List the exact date for the minimum.

E6. What was the maximum discharge since 2008 and when did it happen? Simply scroll to the bottom of the discharge column without clicking anything. If there is nothing listed at the bottom of the column, then scroll up until you reach the final value listed.

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Section F

State of Missouri River Data

F1. Write down the date for which you will be answering the following questions.

Take a look at the discharge column and find the value that is closest to the discharge of the St. Clair River that you wrote down for question E2. It's a long list, but the closest value is actually pretty easy to find.

F2. What river is it?

F3. What is the location on that river?

F4. What is the discharge?

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THE END

ST. CLAIR COUNTY COMMUNITY COLLEGE, PORT HURON, MICHIGAN