Geospatial Enterprise Office

Yes, but be sure to read our disclaimer statement prior to downloading data. This product is for informational purposes and may not have been prepared for, or be suitable for legal, engineering, or surveying purposes. Users of this information should review or consult the primary data and information sources to ascertain the usability of the information.

Yes, the data off our site is free to download and use.

We are not set up to make maps for the public.

• Yes. There is a free software package called ArcExplorer that can be downloaded and used to make maps with our data. The software is put out by ESRI and can be downloaded from their Web site at ESRI.
• If you only want access to the database portion of our data the shapefiles each have a .dbf file in them. This file is a dbase compliant database file.
• Our ArcIMS site does not require GIS software, but it does not work with all browsers. It has been tested with Internet Explorer Version 6 and later, Netscape version 7 and later and Mozilla 1.1 and later.

Our data may not line up with your data if it is in a different projection or at a different scale (resolution). With the exception of the 30 M DEM data, all the data on our Web site is projected using the Oregon Lambert Coordinate Reference System. Problems may also be caused by errors in either your data or our data.

Yes, information can be found at Oregon Geographic Names Board.

The best data we have for local roads is the 1:100,000 scale 2000 Census Roads theme.  Individual Cities and Counties will have more accurate data.

Data for the USFS and BLM can be found at USFS and BLM.
BLM data can also be found at BLM Internet GIS Sites .

Yes. You can go to ORMAP.
 
 

With the exception of the 30 M DEM data, all the data on our Web site uses the Oregon Statewide Lambert Coordinate Reference System.  

File downloads are available on the Spatial Data Library File Format web page.

They are UTM NAD27 with vertical units in reference to National Geodetic Vertical Datum of 1929 (NGVD 29).

Simply add a .dem extension to the file prior to importing.

You need to have the Spatial Analyst extension in order to import DEMs into ArcView.

ArcView Spatial Analyst limits the number of characters themes can have in their names.

DRG is an acronym for Digital Raster Graphics. Digital Raster Graphics are scanned images of the USGS Topographic Quad maps. Our site contains DRGs at various scales.

The numbers are the Ohiocode. These numbers uniquely identify each quad in the United States. Ohiocode Quad Names (doc)

The numbers are the Ohiocode. These numbers uniquely identify each quad in the United States. To look up the Ohiocode for a specific quad name, click here: Ohiocode Quad Names (doc)

You have to download both the .sid file and the .sdw file. If you did not download the .sdw file it will show up in the wrong location. If you did download the .sdw file, check your file. Internet Explorer adds a .txt extension to .sdw files. If you have a filename .sdw.txt, simply remove the .txt ending and the file will operate properly.

Tiff formatted DOQ can be purchased from the USGS EROS Data Center.

Individual DOQs range between 150 and 200 mb. They were put into MrSID format in order to allow for Internet access to the files.

Statewide orthoimagery for Oregon was collected in 2005 and may be viewed and downloaded via the Oregon Imagery Explorer.
 
Digital Ortho Quads (DOQs) from 1995 and 2000 are available from the GEO Spatial Data Library  or the  Orthoimagery web page.

Yes, we publish a statewide calendar on our Web site where you can schedule events. 

Email us if you would like to list your event on our calendar.