LAB EXERCISE

Due via e-mail by the end of 4/20/20 (by 11:59 p.m.)

Feel free to insert your answers electronically on the assignment sheet and submit it without needing a printer. It will be helpful to have your assignment sheet in front of you as you make your way through this Lab Exercise. Perhaps you could have half of your computer screen on the website and the other half on the assignment sheet. Printing the assignment sheet works too.

__Section A__

Here are the three largest rivers in the world (based on discharge at the mouth of each river):

1. Amazon River in South America (209,000 cubic meters per second)

2. Congo River in Africa (41,000 cubic meters per second)

3. Yangtze River in China (30,100 cubic meters per second)

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 discharge of the Nile River is around 2800 meters per second. The Nile River has low volume despite its great length.

Follow the instructions on your assignment sheet for section A.

_____________________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 longest rivers in the United States? List the five rivers in order starting with the longest (B6 = longest, then B7, B8, B9 and B10). 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).

__B11 to B15__

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 (B11 = largest, then B12, B13, B14 and B15). 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.

__Section C__

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").

__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 (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?

__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 (just above the first graph "Most Recent Instantaneous Value")?

Click here to answer E3 & E4 -- St. Clair River Data since 2008

E3. 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.

E4. 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.

__Section F__

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.

F2. What river is it?

F3. What is the location on that river?

F4. What is the discharge?

THE END