GIS Lesson

Esteban

October 15, 2019

Setup:

GIS = Geographic Information Systems

Fancy maps using LOTS of data

Goals

  • Learn how to use aerial images to analyze the environment
  • Acquire data from a free source
  • Get introduced to open source geographic software

PS: this lesson is available here

Step 1.

  • Open your city’s GIS service (or google maps if you don’t have one)
  • For West Linn it is MapOptix

Step 2.

  • In MapOptix find where you live
  • Turn on the base layer titled “AIR PHOTO 1936”
  • Take a screenshot of what the land looked like where your house is now and add it to the google doc. Be sure to:
    • scale it appropriately (approximately 1:2400)
    • turn off base map overlays

Step 3.

  • Turn on the layer “AIR PHOTO 2017”
  • Find and record the creek closest to your house
  • By turning on the “Environment” layer it is easier to locate streams

Step 4.

  • Under the environments tab there is a wetland tab
  • Along the top bar there is an option called Query/Info/Measure
  • Measure the area (in square meters) of the wetland closest to your house
  • Record area and add a screen capture of the polygon you made

Step 5.

  • Turn on Flood Management Areas
  • Under the Geology tab turn on Landslide Hazards
  • Turn on Metro Habitat
  • Record whether or not your house falls into any of these polygons. If it does record which ones.

Step 6.

Answer question 5

Where can you find GIS data?

How do you process GIS data?