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Project Location Guidance

Coordinate Formats

When submitting a map to OWEB for a grant application, it is important that the coordinate you supply is in a readable format.  Many formats exist because of the use of different projections in geographic information systems (GIS). A projection is the transformation of a three-dimensional space (Earth) onto a two-dimensional map. The State of Oregon has defined Oregon Lambert as the standard projection for government use.

Please provide your project area coordinate information in a readable format using the options listed below.  It is not important to identify the projection used to create the map.

Coordinate Formats

  • Feet (use in the Oregon Lambert projection) (e.g. 1,952,416.309, 1,254,867.242)
  • Decimal Degrees (e.g. -123.416, 45.216)
  • Degree Minute Seconds (use in the Oregon Explorer Map Viewer) (e.g. -118° 11’37.079”W, 45° 5’39.728”N)
  • Degree Decimal Minutes (e.g. -118 10.557, 45 4.454)
  • UTM/MGRS – Universal Transverse Mercator/Military Grid Reference System (e.g. 18T 0439535 5024750)

Obtaining Lat/Long Coordinates

The Oregon Explorer Map Viewer can be used to create a map (see 'Creating a Map' section below) and also to obtain the latitiude/longitude coordinate required on grant applications.  In following the provided guidance for creating a map, a step is included to obtain a latitude/longitude coordinate.
Oregon Latitude Longitude Locator

LocateOR is an application that will allow users to locate places in Oregon using a place name, a latitude and longitude, a legal description (township and range), a highway milepost or UTM coordinates.

Custom features of the application include:

  • Location information derived from a point that you click on the map is automatically entered into the clipboard, so it can be pasted into an email, or other document.
  • Bookmark and measuring tools.

Obtaining the 10-digit HUC

Watersheds are delineated by the U.S. Geological Survey using a nationwide system based on surface hydrologic features.  The 10-digit HUC (hydrologic unit code) level identifies watershed units at the 5th field.

Oregon Explorer Map Viewer Instructions

  1. Go to http://oregonexplorer.info/
  2. Click on Oregon Explorer Map Viewer in the left hand column
  3. Switch the Map Theme to 'Watershed Restoration'
  4. Enter the town closest in proximity to your project in the search field.
    • Results will be listed in the left hand column
    • Click on 'Table View'
    • Select the 'Place Names' tab
    • Click on the name of the town once and the map will zoom to the location.
  5. Switch the menu on the left to see the map layers.
    • On the ‘Explore Map’ tab select ‘Display for….’. In the drop down menu click on ‘Select None’
    • Scroll down the menu toward the end and check only ‘Hydrologic  Boundaries: 5th level (HUC 10)
  6. Select the 'Point Identify tool and click once on the center of the map.

Note: the​ 'HUC number' that is displayed is the 10-digit HUC required for the grant application.

​Download a PDF of these instructions. (com​​​​​plete with screen shots)

Creating a Map

A project location map is required with your grant application. In an attempt to standardize the map products received for projects, OWEB suggests using a specific online tool for creating a map. The Oregon Explorer Map Viewer offers user-friendly capabilities to create a printable PDF map. To create a map follow the instructions provided in the PDF below, a latitude/longitude coordinate will also be identified that can be used for the grant application. Click on the following link to download step-by-step instructions for using the tool.

Oregon Explorer Map Viewer Guidance
Oregon Explorer Map Viewer

Example map created using Oregon Explorer:


Elements of a Good Map

The following describes elements that should be included on a map submitted to OWEB if the Oregon Explorer Map Viewer is not used to create the map.

  1. A legend or clearly labeled features
  2. A north arrow
  3. A latitude/longitude coordinate - either the center of the map or center of the project area
  4. A base map - either aerial imagery or a topographical map
  5. A map title - preferrably the project name
  6. A labeled hydrography layer

Free Oregon spatial data can be downloaded from the Oregon Spatial Data Library.



For questions or guidance on submitting project location information or a map for grant applications, please contact Paula Wills, (503) 986-0037.