Free contour maps
Free contour maps
(OP)
I need to get a rough estimate of the off-site flow onto a project site. Are there free CONTOUR MAPS available on-line?
("You're only as old as you want to feel." - Satchel Paige)





RE: Free contour maps
Go to Map Locator.
Download in PDF Format.
http://store.usgs.gov/b2c_usgs/b2c/start.do
RE: Free contour maps
http://nmviewogc.cr.usgs.gov/viewer.htm
RE: Free contour maps
They may have moved up to some fee-based service however. . .
f-d
¡papá gordo ain't no madre flaca!
RE: Free contour maps
I can't seem to find any free download. It wants me to order a map for a fee.
I guess that is the only way to get a topo map on-line - to pay for it?
("You're only as old as you feel." - Satchel Paige)
RE: Free contour maps
Some colleges and universities have topo online - esp. schools with geology or geography programs.
RE: Free contour maps
RE: Free contour maps
RE: Free contour maps
http://home.cinci.rr.com/creek/garmin.htm
RE: Free contour maps
RE: Free contour maps
They provide a google earth layer that shows topo quads at multiple scales, allow printing, exporting, etc. And as far as I've used it it has been free.
RE: Free contour maps
most usgs maps are 20-30' contours. the generated map link i posted will generate maps to any scale. keep in mind that the quality of maps depends on the database used (1-arc, 1/3 arc, or 1/9 arc).basically, 1/3 arc has 10' vertical accuracy and 1/9 arc has 3' accuracy. they are also reportedly updated annually, but i have seen instances where i would argue that it is not. as always, use any map with caution and confirm the map correlates with field conditions.
RE: Free contour maps
http://libremap.org/data/
RE: Free contour maps
seamless.usgs.gov
Of course it's not good to use this data for final design purposes, but it can give you a general idea.
RE: Free contour maps
RE: Free contour maps