Links for mapping
Green Trails Maps
Find and purchase maps online, find retailers, or make use of some of their free online maps.
Topographic Map Symbols (.pdf)
The USGS publishes this source of information on topographic maps. A general definition of topographic maps is provided in addition to guidelines for reading topo maps and understanding the symbols used.
Keyhole - the ultimate interface to the planet
A Great website for 3D views of anywhere on the planet! Layers of data include towns, highways, lakes, rivers, mountains, valleys...the list goes on. Free 7-day trial. $29.95 per year.
Mount Tahoma Trails Association
The non-profit trails association and its partners have a site that provides information about their local trail system. Maps covering the area are listed and map images for different districts are provided.
TerraServer USA
This Microsoft-sponsored site provides both aerial photos as well as topographic maps of areas. Both sets of images can be printed or downloaded from the site.
TopoZone
"TopoZone is the Web's center for professional and recreational map users. We've worked with the USGS to create the Web's first interactive topo map of the entire United States. And we've spent four years making our maps the best on the Web as well." - TopoZone
USGS Topographic Maps
General information about USGS topographic mapping and maps. Ordering maps and connecting to digital graphic resources provided.
Purchase USGS maps online for Washington State
The USGS provides a list of partner companies that sell their maps online.
Canadian Topographic Map Search
"The most common question we receive from map users is "Which topo map covers my area of interest?" Using interactive tools, you may search our database by NTS number, geographical name, geographic co-ordinates, or using a clickable map interface to locate any National Topographic System map sheet and its metadata (information about the map sheet) for any part of Canada." - Canadian NTS Website
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