Google Earth Runoff Map

This lesson was developed by Dr. Cynthia Annett and used by the KCK Saturday Science and Math Academy


Lesson created by Dr. Cynthia Annett

Where in the world are you??

Open Google Earth

Do you see the world on your computer?

1. Now find Kansas.
You can zoom in by double clicking on a spot or use the zoom and pan tools.




2. Now use the "fly to" search to find Kansas City Kansas Community College (KCKCC).
Add an icon to mark our building.
Put a title in the dialog box, write something in the description box, change the icon.
Save.







3. Find Allen Fieldhouse at the University of Kansas.

Use ground view to zoom in (drag the little gold man on the zoom tools and drop him in the spot you want to zoom in on).




Turn on 3D buildings in the left sidebar.

Use the street view to see a photographic view, use the building view to see it in SketchUp (you can zoom inside to see the basketball court).






4. Exit ground view.

Add an icon to mark Allen Fieldhouse.

Put a title in the dialog box, write something in the description box, change the icon.

Save.

5. Use the path tool to connect Allen Fieldhouse and KCKCC.

In the dialog box add a title, and use the style tab to change the color of the line.

Now go to the measurement tab and find out how many kilometers it is from Allen Fieldhouse to KCKCC, write this in the description.

Save.






6. Find your school.

Use the polygon tool to draw a square over the building.

Add a title, write something in the description, use style to change the color of the fill.

Save.






7. Go to Add on the top toolbar and create a folder.

Drag and drop the markers, paths, and polygons you have created to the folder.





8. Now save your map.

Click on the folder.

Go to File>Save>Save Place As and save the file to your computer.




9. You can also open the file in Google Earth by clicking on File>Open and clicking on the file in the browse window.

10. If you have more time, you can explore the Earth Gallery.








Floods happen when there is too much water running off the land and into a river. Water that runs off the land during heavy rainstorms or when snow melts has to go somewhere-- and in Kansas it flows downhill into the nearest river.

1. Use the Google Earth kmz file called "Where does the water go?" in the attachment section at the bottom of this page to find out where run-off from the KCKCC campus ends up.

Add a marker icon to show where the Kansas River joins the Missouri River, add another marker icon to show where the Missouri River joins the Mississippi River, and add a third marker icon to show where the Mississippi River enters the Gulf of Mexico. Place your markers in the "Where does the water go?" folder and save it to your computer desktop.


Scientific Calculator

The gadget spec URL could not be found


2. Now calculate how much water will run-off the roof-tops of our buildings and off of the grassy areas on campus.


Use the Google Earth kmz file called "KCKCC run-off calculations." Found below in the attachment section of this page.

There is an example of the calculations below.










Calculate how much run-off there will be from a 10 cm rainstorm falling on the area you have been assigned. You will be given a number that tells you which area you will use for your calculations. When everyone is finished we will use your data to find out how much water runs-off the entire KCKCC campus.


What area are you measuring? * Give the number of the rectangle you are using in your calculations.


What is the surface under your rectangle? * Use the slider at the bottom of the "Places" sidebar in your Google Earth to make the rectangle clear.
  • Roof
  • Parking Lot
  • Lawn

What is the length of the rectangle in meters? * Use the path tool in Google Earth-- there is a tab that says "Measurements" in the dialog box


What is the width of the rectangle in meters? * Use the path tool in Google Earth-- there is a tab that says "Measurements" in the dialog box


What is the area of the rectangle in square meters? *


What is the area of the rectangle in hectares? *


How much rainwater falls on the area of the rectangle during a 10 cm rainstorm? * When 10 cm of rain falls on 1 hectare of land, there will be a total of 1,028,000 liters of rainwater water falling on the 1 hectare of land.


How much water runs off your rectangle during a 10 cm rainstorm? Show your work. * Tell us if your surface is permeable or impermeable. If it is impermeable, all of the water will run-off. If it is permeable, only 0.06 times as much water will run-off of it.





How much water will run off the parking lot during a rainstorm?


Download the Google Earth kmz file called "Run-off Example" from the attachment section called at the bottom of this page. Save it to your computer desktop. Open the file in your Google Earth.

You can use the slider to make the rectangles clear, that will let you see what is under the white rectangle.



Scientific Calculator

The gadget spec URL could not be found

a. Measure the sides of the Example parking lot

Length = 118 meters

Width = 19.5 meters

b. Calculate the area of the Example parking lot

Area = Length x Width =

118 meters x 19.5 meters = 2,301 square meters

2,30l m2 = 0.23 hectares




c. Find out how much runoff there is during a “standard” storm for a “standard” area:

 

We are told by the United States Geological Service (USGS) that when 10 cm of rain falls on 1 hectare of land, there will be a total of 1,028,000 liters of rainwater water falling on the 1 hectare of land.

Asphalt and concrete parking lots are impervious surfaces, meaning that the water cannot soak into it and the water runs off of it during a rainstorm.

d. Calculate how much runoff there is from your parking lot during a 10 cm rainstorm.

 

(0.23 hectare) x (1,028,000 liters/hectare) = 236,440 liters of water runs off this parking lot during a 10 cm rainstorm

e. Water runs off asphalt and concrete, but water soaks into dirt and grass. Only 0.06 times as much water runs off grass compared to a parking lot. If we had the same size area, this means that there would only be

 

(0.23 hectares) x (1,028,000 liters per hectare) x (0.06) = 14,186 liters

 

f. How much more water runs off the parking lot during a 10 cm rainstorm compared to a grassy lawn of the same size?

 

236,440 liters – 14,186 liters = 222,254 liters

 

This means that the parking lot has 222,254 liters more water running off during a 10 cm rainstorm than the grassy lawn. That is a lot more water flowing into the stream-- and when too much water flows into the river we get a flood.





The exercise below is suitable for Middle School students


Today we are going to talk about what happens to rain after it falls on the land. When there is a heavy rainstorm the land can't soak it all up, and when this happens some of the water runs off the land. Water that runs off the land during heavy rainstorms (or when snow melts) has to go somewhere, and in Kansas it flows downhill into the nearest river. If there is too much water running off the land, the river will flood.

1. Use the Google Earth kmz file called "KCK Schools" in the attachment section at the bottom of the page to find out where your school is.

a. Change the marker icon and make it really different. Open the dialog box and write a description of your school in the box.

b. How far is it from your school to the Missouri River?
Use the path tool in Google Earth to draw a line from your school to the Missouri River, then use click on "Measurement" in the dialog box to find out how far it is.
Write this in the marker icon box for your school (remember to say what the units are).

c. How far is it from your school to the Kansas River?
Use the path tool in Google Earth to draw a line from your school to the Kansas River, then click on "Measurement" in the dialog box to find out how far it is.
Write this in the marker icon box for your school (remember to say what the units are).

d. Save the marker icon for your school.

2. Use the Google Earth kmz file called "Where does the water go?" in the attachment section at the bottom of this page to find out where run-off from the KCKCC campus ends up.

a. Add a marker icon to show where the Kansas River joins the Missouri River.

b. Add another marker icon to show where the Missouri River joins the Mississippi River.

c. Add a third marker icon to show where the Mississippi River enters the Gulf of Mexico.
 
d. Place your markers in the "Where does the water go?" folder and save it.




ċ
KCKCCrun-offcalculations.kmz
(11k)
Dr. Cynthia Annett,
Dec 6, 2011, 7:35 AM
ċ
KCKSchools.kmz
(1k)
Dr. Cynthia Annett,
Dec 6, 2011, 7:34 AM
ċ
Run-offexample.kmz
(1k)
Dr. Cynthia Annett,
Dec 6, 2011, 7:35 AM
ċ
Wheredoesthewatergo.kmz
(5k)
Dr. Cynthia Annett,
Dec 6, 2011, 7:35 AM