Online Mapping

This page describes various ways of producing maps for backcountry navigation using online mapping tools.

Federal Government NTS map based services

GeoGratis CanMatrix

CanMatrix

CanMatrix ftp site

GeoGratis has a large selection of geospatial data and maps for free, including Scans of the NTS topo maps (the same maps you would purchase). You can search by mapsheet (eg. 92j3) and click on the map you want.

To work out which mapsheet it is you need for a specific area, use one of the following index maps

• SW BC Crop
• clickable index map for SW BC hosted by a private website
• clickable index maps on the Government Atlas of Canada site

Toporama

NTS mapping information is available online through the Natural Resources Canada toporama website. The data is all there but north is in a strange direction because of the projection they use. There is also an older version of toporama that uses the same projections as the NTS maps but the interface isn't as nice and it stretches the maps horizontally.

Provincial Government TRIM map based services

iMapBC

iMapBC

iMapBC is a comprehensive online mapping application with numerous features, great for making your own maps. It is possible to import GPS waypoint data, mark locations, add UTM gridlines, create PDFs of maps, and lots more. For an example of what is possible see the PDF maps on the Brew Hut page under Access.

Adding UTM gridlines

1. Click Layers -> Add -> Base Layers
2. In the pop-up window, select the gridlines you want to add, e.g. "UTM Gridlines (1:1,000)"
3. In the main window, click "Refresh Map"

Marking locations on the map

1. Click Toolsets -> Markup
2. To add a location where you know the coordinates (e.g. a single GPS waypoint), click the "Add Coordinates to Map" button, then enter the coordinates
3. To add a point to the map by clicking on the location, use the "Add XY Location to Map" button

Importing multiple GPS waypoints

First create a spreadsheet of the waypoints using the WGS84 Datum, with an initial column numbering the waypoints, e.g.:

	Long	Lat
1	-123.31381	49.92509
2	-123.32506	49.93141
3	-123.33503	49.93537
4	-123.33706	49.93935

Save this as a .csv file, then you can import the waypoints into iMapBC as a new layer on the map:

1. Click Toolsets -> Analytical
2. Click the "Upload CSV" button ("a" on a page with an upload arrow)
3. Select the file and click "upload"
4. Select which columns in the spreadsheet are for X and Y coordinates. This is easiest if you have column headers as shown in the example table above.
5. For Lat-Long data, use "source Projection" = Geographic
6. Pick a name and colour for the new layer.

maps.gov.bc.ca

maps.gov.bc.ca has links to variety of different mapping tools. These are all very similar to the iMapBC utility described above, but are generally less powerful.

One noteable exception is the "Forest Recreation Sites" mapping utility, which shows many trails and logging roads that are not part of the base map, and are thus not available on iMapBC. For example, this utility can display gps tracks of some popular hiking trails such as Brandywine Meadows, Mt Gardner and the Rainbow - Madely Trail. Also, some recent logging roads are visible that are not shown elsewhere (E300 road system near Blanca Lake for example)

TrailPeak

TrailPeak

It's possible to extract the GPS waypoint data from the google maps on TrailPeak (and then import them into iMapBC, for example). To do this (in firefox), the procedure is as follows:

1. right click on the small preview map
2. click "This Frame" -> "Show Only This Frame"
3. view the page source (CTRL+U)
4. The GPS data is in the Javascript - copy and paste into your favourite text editor
5. remove the latitudes and longitudes and paste into a spreadsheet
6. save as a .csv file
7. import into iMapBC as described above

Bivouac.com

Bivouac.com is a members only website that has a spatial database of peaks, roads, trails, huts and trip reports. The data has been inputted manually by ordinary people. This means that the resolution of the data is much reduced (sparse waypoints along roads, no contour maps) but the data is usually very current. Bivouac is a reliable source for up to date road conditions, whereas other mapping utilities often display roads that are completely overgrown or undriveable, and do not include recent branches.

US online maps

Topozone

Topozone has clickable topographical maps of the US. Go to view maps and enter the address, place name or coordinates. It's fairly easy to look up the location of a mountain on Bivouac.com and enter the latitude-longitude in the topozone search box.