Use the Tool buttons to navigate the map, see information about specific points in the map, or print the currently displayed map.

Pan - The default tool is the "Pan"(hand) tool, so you can immediately start using the map just by holding down your mouse and dragging the cursor around the main map area.

Map Identify - Use this tool to learn more about landslide features. Select the cursor, then click on any landslide point, line, polygone, or reference map outline. A popup window appears listing the feature's name and information for that feature (see field descriptions below). If necessary, use the scroll bar to the right of the information area to see all the information. Click on the up-pointing arrow at the top right to collapse the window. Click on the X at the top right to close the popup window.

To see all layer data for that point, mouse over the title of the popup window and click on the down-pointing arrow.

A list of all avaialbe data for that point, along with the scale at which you can see the data, will appear. Click any name on the list to see the data for that specific item.

Full Extent - Click on this tool to return to the full extent of the map. This tool does not reset all the layers; it just resets the map extent.

Save As PDF - Click on this tool to create a PDF (portable document format) image of the current map extent and key to geothermal layer data. The PDF will open in a new browser window. Use the browser window's "Save As" or "Print" functions to save or print the PDF.

Use the Layers options to select the data layers to display on the map. Click on the plus sign to the left of the layer to expand that layer. Click on the minus sign to collapse a layer. Use the scrollbar at the bottom of the column to see the full layer name. To see a layer or sublayer, make sure the check box to the left of the layer name is checked. When you select or modify a layer the map automatically updates. Some users with slower connections may need to wait for layer display to "catch up."

Not all layers are visible at all scales; the scale text next to a highlighted layer tells you the scales at which a layer is visible.

CITY AND HIGHWAY LABELS:

You can turn highway and city labels on and off at different scales.

REFERENCE GRID LAYERS:

You can turn on and off U.S. Geological Survey 7.5-minute quadrangle and Public Land Survey System (PLSS) grids.

For more information, read the Background, Metadata, and Disclaimer pages.

LANDSLIDE DATA LAYERS:

DOGAMI Special Paper 34: Polygon, line, and point data compiled for DOGAMI Special Paper 34. Map Identify features: Unique ID: Unique identifier for each entry. Type: The type of GIS object used to represent the entry (either polygon, line, or point). County: County name within which the centroid of the entry is located. Based on a GIS overlay with an approximately 1:100,000-scale Oregon County polygon layer ["County.e00" obtained from the Oregon Geospatial Data Clearinghouse]. For the 53 entries across the border into California, the COUNTY designation is "CA," and for the 30 entries in Washington, the COUNTY designation is "WA." Watershed: Designation of fifth-field watershed within which the centroid of the entry is located. Based on GIS overlays with the approximately 1:24,000-scale polygon coverages “westwbnd.shp” for the western portion of the state and “orwater.shp” for the east. The "orwater.shp" coverage was used only in areas outside the “westwbnd. shp” coverage. Both data sets were obtained from the Oregon Geospatial Data Clearinghouse. For the 30 entries in Washington, the WATERSHED designation is "WA." The 84 entries in eastern Oregon do not have an assigned WATERSHED; these entries are designated as "N/A" for “Not Applicable.” Source Organization: The organization (company/agency) from which the entry information was obtained. Failure Date: Date(s) of slide activity. Length (ft): Estimated length of the slide in units of feet. Width (ft): Estimated width of the slide in units of feet. Depth (ft): Estimated depth of the slide in units of feet. Volume (cubic ft): Estimated volume of slide material in cubic feet. Type Material: Predominate type of landslide material (rock, earth, debris, fill, other), following the nomenclature of Cruden and Varnes (1996). Type Movement: Predominate type of movement exhibited by the slide mass (fall/topple, flow, translational slide, rotational slide, spread, other), following the nomenclature of Cruden and Varnes (1996). Slope (degrees): Estimated slope angle recorded in units of degrees. Contributing Factors: Noted factors contributing to the failure. Cruden, D. M., and Varnes, D. J., 1996, Landslide types and processes, in Turner, A.K., and Schuster, R.L., eds., Landslides: Investigation and mitigation: Washington, D.C. National Academy Press, Transportation Research Board, National Research Council, Special Report 247, p. 36–75.

SLIDO Landslide Inventory: SLIDO Version 1: Landslide polygons. Map Identify features: General Landslide Type: A generalized field created to distinguish between three different types of landslide deposits: 1) landslide or landslide topography, 2) debris flow or other fan, and 3) talus or colluvium. Reference ID Code: The reference identification code is the shortened code of the full reference to the original study map. The reference identification code is a text field that identifies the reference author by the first four letters of the last name, followed by the first and middle initials, followed by the publication year of work or the unpublished status, followed by the plate information (if any). Full references are provided on the Background page in the Source Data section. Unique ID: This is the Reference ID Code plus a number that identifies a particular polygon from all the polygons identified in each study. This results in a unique ID for each polygon. Original Map Unit Label: The original label given by the reference author on the original map. There are roughly 160 different map unit labels ranging from very generalized labels like "Qls" (Quaternary landslide) to more detailed labels like "Active Landslide-Slump." Landslide Area (square ft): Estimated volume of slide material in square feet.

SLIDO Reference Map Outlines: Map Identify features: Reference ID Code: Same as the SLIDO Landslide Inventory field above. All maps that cover the area are listed. Note that WalkGW2002 always appears because that source map covers the entire state. For full reference citations, see the Background page, Source Data section. Original Map Scale: The scale or ratio at which the original mapping was performed.

For more information, read the Background, Metadata, and Disclaimer pages.

OREGON BASE MAP LAYERS:

You can turn the Oregon base map on or off. Oregon base map layers include Oregon highways (interstates, U.S. routes, Oregon routes), local roads, oregon county borders, Oregon water bodies such as lakes and streams, Oregon city areas, oregon federal and states lands, Orthophotobase (at scales of 1:8,000 and 1:24,000) and terrain (a combination of hillshade and slope imagery used to create a topographic image of Oregon; at scales from 1:4,000,000 to 1:50,000). If a layer is not available at a certain scale, the layer name is grayed out.

REGIONAL BASE MAP LAYERS:

You can turn the regional base map layers on or off. Regional layers are not visible at all scales. Regional base map layers include highways (interstates and U.S. highways), Oregon county borders, U.S. border with Canada, borders of states adjoining Oregon, and water (blue) as a background.

Click the horizontal bars on the zoom tool to zoom to a preset scale, or clock the plus or minus symbols to move up or down the preset scales:

1:8,000 (top rung of the scale tool)
1:24,000
1:50,000
1:100,000
1:250,000
1:500,000
1:1,000,000
1:2,000,000
1:4,000,000 (bottom rung of the scale tool)

You can focus the map on a particular address. Enter the address and city in the fields. Click the Search button to center the map on that address.

The scale bar provides an approximate scale in miles for the map. To change the scale, use the Scale Tool.

A red box on the small outline map of the area shows the extent of the large map area. You can click-and-drag in the location map area to change the focus of the large map.

"Why doesn't the map appear in my browser?"
If the map doesn't display, make sure your browser is JavaScript enabled and, if you are using Internet Explorer, Active X controls are allowed. The map interface has not been tested on all browsers but should work on the most popular browsers.

"How do I zoom to a particular scale?"
You cannot zoom to a particluar scale. Use the scale tool to zoom to predetermined scales.

"How do I save or print a map image?"
Use the "Save As PDF" tool to view the currently displayed map image in a new browser window. Use that browser window's File > Print command to print or save the PDF file.

"Why doesn't the screen update when I click layers on and off?"
The map contains a lot of data. Sometimes the display needs time to "catch up" to the clicks. If the map will not refresh properly, try resetting the map (click the Reset button in the Tools area), or refreshing the page, or closing the browser window and then opening the map page again.