topographic map

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topographic map

A map that shows the contours of the land via a two-dimensional drawing with multitudes of contour lines showing changes in elevations.Each map has its own scale.The contour lines indicate a change in elevation by the scale amount. For example, each line might represent a 1-foot change in elevation. The distance between the lines can be computed by reference to the distance scale.For example,1 inch might equal 50 feet.Two contour lines that are 1 inch apart would indicate a grade of 1 foot over the course of 50 feet, which is very gentle. The closer the lines on the topographic map, the steeper the incline.

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The closer the contour lines on topo maps the steeper the changes in elevation, and along the shores of one remote stream near the Appalachian Trail the lines were enticingly close.
When combined with the new GPS Hunt Topo Map SD Cards, the GPS Hunt app turns a smartphone into a full-fledged GPS unit with super-detailed maps that work in remote places without a cell or data connection.
The GPS Hunt Topo Map Cards are sold by state for $99 and $119 (for the larger states: Texas, Montana and California).
Geological Service publishes topo maps for the entire country, and a number of mapping companies offer software that allows users to manipulate USGS maps.
However, the topo map reveals the secrets of the terrain.
But I would suggest a GPS unit and a good topo map of the area instead of a compass, especially when you do the right thing by getting off the trail.
If you have a topo map, you can pretty much figure where you're going.
The Elite membership provides access to more than 2,500 best-in-class topo map bundles that can be stored on smartphones and tablets.
Be forewarned, however, that downloading a topo map can be excruciatingly slow through a home computer modem - after all, it takes a tremendous amount of data to tell your computer where to draw all those contour lines at 40-foot elevation intervals.
You will be able to figure this out when you start looking at a topo map.
Looking at my topo map, I located some promising funnels, set off with a Lone Wolf climber on my back, and before long was strapped into a tree overlooking a creek bottom with a rub line dotting one bank.