The Data tab is where you'll find the data layers available for viewing.

  1. Click on a Theme to show the Data Layers available for you to view
  2. Select one or more Data Layers to display it on the map
  3. Use the search box to find layer by name

Switching to the Active tab allows you to customize the data you selected from the Data tab.

From the Active tab you can adjust the ordering of the layers, change their transparency, and turn them on and off.

Legend symbols are listed under the Legend tab.

Adjusting the layer ordering in the Active tab will cause a re-ordering in the Legend tab as well.

Use the + and - to zoom in and zoom out. Go ahead, Try it!

You can also zoom in to a particular area on the map:

  1. Hold down the shift key
  2. Then with the mouse button pressed, drag the mouse across the map (the zoom area will be shown on the map)
  3. Release the mouse button when the zoom area is complete

The map includes the following specialized features allowing you to:

  1. Change the underlying Basemap (e.g. satellite or road map)
  2. Use Bookmarks to create, store, or share your personalized map views with friends
  3. Export your personalized map view as a URL or an Embedded Map
  4. View the map in Full Screen (not applicable in some internet viewers)

You can search for a specific map location by typing it into this 'Search the Map' box.

A location can be any of the following:

  • The name of a town or landmark like 'Crater Lake'
  • An address such as '721 NW 9th ave, Portland, OR'
  • Geographic Coordinates like '44.660972, -120.273394'

The left panel can also be minimized to make more room for the map viewer.

The Data tab is where you'll find the data layers available for viewing.

  1. Click on a Theme to show the its Data Layers available for you to view
  2. Select one or more Data Layers to display it on the map

Clicking on the Themes will expand/contract the list of available Data Layers and/or Subthemes.

Clicking on the Layer names will display the data on the map.

Clicking on the info button will display the layer description in a separate pop up window.

This includes descriptive information, the source of the data, and links for download and further exploration.

Switching to the Active tab allows you to customize the data activated from the Data tab.

You can quickly turn layers on and off by clicking here.

Clicking on the transparency button gives you control over the layer's transparency on the map.

You can remove a layer from the Active tab by selecting the button (don't worry, you can activate it again under the Data tab).

The ordering of the layers on the map (which layers are "on top" of other layers) is the same as the ordering in the Active panel.

To change the order of the layers simply drag-and-drop the layer to the desired position in the list of layers.

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