How the Mapviewer Works
The Owlshead GPS Mapviewer utilizes the Carto user interface in which to display the Project’s route data.

• Using the Mapviewer you can zoom in and out, and move and scroll across the map.

• If you wish to reset the map and return it to the default view, click the “Reset Map” link in left side menu.

The Mapviewer is locked to limit your ability to scroll beyond the current OwlsheadGPS Project Area. As the Project Area expands, so will our lock on the MapViewer’s boundary.

Simply click directly on a route and the MapViewer will center on that route. The entirety of that route will be contained by a bounding blue box. Also, a popup “balloon” will appear with information about the route, and links to download a route file to your computer in either the GPX or KML format.

Viewing OHV Route Maps

Use the Carto Maps interface to navigate to the area you wish to view. Click on a green or yellow OHV route to center the route within your browser window and inside a blue bounding box. The box contains the entire route from end point to end point

On top of the bounding box will be a small popup window that displays information about that route, including the route number, the agency that manages the route, and an indicator for full-size and motorcycle routes. There are also links to download a data file for the route in either the GPX or KML format.

You can also go directly to map coordinates and OHV routes by using the Search tool.

Printing OHV Route Maps

Simply use the print features of your computer and printer to print OHV route maps from your browser. Consider printing to PDF files for your mobile device for times when you do not have internet access.

Searching for Locations

You can search for locations within the Project Area by any of three latitude/longitude coordinate formats:

Degrees Decimal (DD)

ex. 35.6225N 117.6699W

or 35.6225 -117.6699

Degrees Minutes Decimal (DMD)

ex. N35 37.350 W117 40.194

or 35 37.350 -117 40.194

Degrees Minutes Seconds (DMS)

ex. 35 37 21N 117 40 11W

Click here for a handy online coordinate converter.

• The MapViewer location search supports coordinates in the WGS84 map datum.

• The MapViewer does not support the UTM or other coordinate systems.

• The MapViewer does not support placename search. You can use the Carto website to perform placename searches and obtain their coordinates for use with the MapViewer.

Searching for Routes

You can search for OHV route names within the Project Area by using the following format:

• R10

• EP15

• SC103

• 27S02

Routes must be in the Project Area. There are a small number of route names that do not use a prefix and number.

Click here regarding other limitations with the current route data.