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Map Viewer Help

Read this page if you have trouble navigating or understanding the map interface.

Note: To view the map, your browser must have Adobe Flash Player and must allow cookies. The map will run on the Macintosh operating system, but users of Apple iOS devices (iPhone, iPod Touch, iPad) will need to obtain a Flash-enabled, third-party browser such as Skyfire or Puffin. Note that DOGAMI does not endorse any particular third-party software.

Map Components

HazVu interface

The components and functionality of the DOGAMI Statewide Hazard Viewer are explained individually below.


Pan and Zoom Controls

Zoom and Pan control

Pan and Zoom controls allow you to navigate around the map. The viewer opens at 1:9,244,649 scale. You can zoom in to 1:9,028 scale.

Besides panning north, south, east, and west you can pan NE, NW, SE, SW by clicking on the N, S, E, and W arrows. Return to the full extent by clicking on the blue globe. When the hand is selected, you can move around the map by left-clicking mouse and holding down the mouse and dragging the cursor.

Zoom scales for this map are:

  • 1:9,028
  • 1:18,056
  • 1:36,112
  • 1:72,224
  • 1:144,448
  • 1:228,895
  • 1:577,791
  • 1:1,155,581
  • 1:2,311,162
  • 1:4,622,324



Select / Show / Hide Hazard and Asset Layers

Layer features

legend - currently shown layers

both layer icons

To learn more about the data layers, see Hazards and Assets. Be sure to read the Limitations.

Both the "All Layers" and the "Layers Currently Shown" windows display information about data layers. You can change which layers to display by using the "All Layers" window. The "Layers Currently Shown" window shows only the layers being displayed, so it acts like a legend for the current mapview; you may find this more convenient than scrolling through the All Layers window.

Both windows are open by default when you open the viewer. No Group layers are initially checked. Choose layers by checking boxes to the left of the layers. To expand a layer and see particular kinds of hazards, click on the plus sign to the left of the layer. All sublayer choices for a layer appear when the layer is expanded. To display a sublayer layer on the map, make sure both the sublayer AND its group layer are checked on.

  • Move the legend window around the screen by left-clicking and holding down the mouse, then moving the cursor to reposition the legend box.
  • Resize the window by positioning the cursor in the lower right corner of the legend box until the double-arrow cursor appears. Then left-click and hold down the mouse while dragging the cursor.
  • Close the window by clicking the "X" in the upper right corner of the box.
  • Minimize the window by clicking in the horizontal bar in the upper right corner of the box.
  • Collapse a single layer by clicking on the plus sign to the left of the layer.
Show/hide the symbol for a sublayer in the legend by clicking on the plus/minus sign to the left of the sublayer.

See all the layers and symbols: PDF | PDF with descriptions

Click on the down-arrow to the right of each group layer to see more options for layer groups:

  • Zoom to. Some hazards do not cover the entire state. Click Zoom to see the maximum extent of data in a group layer.
  • Transparency. Click on Transparency to get a slider bar that allows you to set the transparency of the group layer. Slide the ball to change the transparency.
  • Move down. Click Move down to change the stacking order in which the layers are displayed.
  • Expand All Layers. Click to show all sublayers for all Groups. All sublayer symbols are also shown.
  • Collapse All Layers. Click to hide all sublayers for all Groups. All sublayer symbols are hidden next time you expand a Group layer.

Description for 100-Year Floodplain...

Click the arrows to the right of the sublayers to get additional options.

  • Zoom to. Some hazards do not cover the entire state. Click Zoom to see the maximum extent of data in a sublayer.
  • Description. Click to see a popup window showing a short description of the hazard/asset and a credit for the data. If the window is too small, make it bigger by clicking and dragging the lower right-hand corner of the window. Close the description window by clicking on the "X" in the upper right-hand corner.

    To learn more about the data in each layer, see Hazards and Assets and Limitations.

Scale Bar

FEMA Coos County scale bar

The scale bar provides an approximate scale in miles for the map. To change the scale, use the Pan and Zoom Controls.

The latitude and longitude of the cursor's current position on the map are also shown.


Overview Map

HZAVU location map

A red box on the small overview map in the lower right corner shows the extent of the large map area. You can click-and-drag in the overview map area to change the focus of the large map. Click on the small arrow on the overview map to hide the overview map.


Base Map Options

FEMA Coos Base maps

There are nine base map options. All basemaps can be selected at all scales but will not necessarily show data at each scale. These map services can help you look at the hazard data in different ways. For example:

Light Gray Canvas (default): The Esri "Light Gray Canvas" map service focuses attention on the data layers by providing a neutral background with minimal colors, labels, and features.
Data Source

DOGAMI Lidar: The "DOGAMI Lidar" map service is based on a remote sensing technique similar to radar that uses light pulses instead of radio waves. Lidar is typically “flown” or collected from planes and rapidly produces a large collection of very dense and accurate elevation points (up to 500,000 per second) over a large area. As lidar imagery becomes available, it is added to this service.
Data Source

Imagery: The "World Imagery" map service provides satellite imagery that is the most photograph-like of the basemap options. It can help you see the hazard data on top of "real-world" features.
Data Source

Topographic: The "National Geographic World Map" service provides a a map that shows the topography of the land (without contours). It can help you see the hazard data on slopes and channels.
Data Source

Other base maps to choose from:

The same area using different basemap options (Basemap, Aerial, and Topo) and the landslide hazard layer turned on. You can change the transparency of the hazard layer by clicking on the down-arrow to the right of the hazard group layer, clicking transparency, and using the slider.


Tool Bar Options

address finder


Controls at the top of the map allow you to show/hide hazard and assets layers, select a public building, enter an address and zoom to it, and print the current extent.

Select/Show/Hide Hazard and Asset Layers. See the Layers section above.

FEMA Coos County feature identify icon

Select a Public Building: Use this tool to locate/identify schools, hospitals, and fire and police stations throughout the State of Oregon. The Public Buildings layer does not have to be turned on to use this function. Once a facility is located, click on a facility to view a PDF of the RVS (Rapid Visual Screening) report for that facility. RVS reports are are result of the Statewide Seismic Needs Assessment Using Rapid Visual Screening (RVS) [Senate Bill 2 (2005)] conducted by DOGAMI.

A handy list of buildings is provided as Public Buildings with Seismic RVS Site Summary Reports.

To select a critical facility on the map, navigate to the area on the map you are interested in, then select a drawing tool. Use the tool to define a point, line, or area within which you want to search. For example, use the rectangle tool to draw, by clicking on a start location, then holding down the mouse as you draw a box. Release the mouse. Any Public Buildings in the boxed area on the map will be listed in a popup window.

Hint: If the Public Buildings layer is turned on, you can determine if the area you are interested in has any Public Buildings before you search for buildings.

Drawing around features example:

You are interested in seeing the RVS reports for the Public Buildings shown on the map below:

Use the rectangle tool in the Search to draw a box around the Public Buildings. Click on "Clear" to start over.

Each Public Building now has a Public Building icon, and the results are listed in the Search window. You may need to drag the bottom right corner of the window to see all the results. Click on the "RVS" button RVS button on the right side of a building in the list to access the RVS report PDF in a new browser window.

A popup window also appears on the map to point to the building you mouseover in the list. You can select the link in the popup or by using the RVS button to access the PDF.

Public Buidling search result

Example RVS report PDF

If you click on a search result on the map itself, even if you are not using the Select tool, a popup showing the building name and a link to the RVS report will appear. Click on the RVS link to access the RVS report.


Print Your Map: Print the current extent of the map. Clicking the icon causes a popup box to appear. Optionally, enter a name and subtitle for your map view, then click the "Print " button to display a Print dialog box. Choose printer settings as you normally would for your printer setup but with "landscape" orientation.

Enter address and zoom to it: Use this tool to zoom to a location by entering a street address, including city and "OR" or "Oregon". You can also enter the city and state, such as "Bend, Oregon". A list will display that shows possible address matches. Select the one you want.

In the example below, the user has entered "100 Main St., Portland, OR" in the Address field and then selected 100 SE Main St. from the list of possible addresses.

FEMA Coos County address locator popup 1  

FEMA Coos County address locator popup 2

The map recenters to the selected address and displays a popup pointing to the address.

multiple search results

If the address is a Critical Facility and you have the Buildings > Critical Facility layer turned on, you can click on the Critical Facility icon on the map to display information. Click on the RVS Report link at to open a PDF of the RVS (rapid visual screening) report for that facility in a new browser window.