3/01/2012

Got Maps? 15 minute USGS topo maps free download




I asked Jim to create some directions for accessing and printing topo maps online. This is a free service that FSAR members and others might fine useful. Thanks Jim!

15 minute topos cover the area of four 7 ½ minute ones. The USGS stopped making new 15 minute topos as long ago as the 1960s and within the last 15 years they not only stopped making them but attempted to recall them from sales points in order to destroy them. Still, they often have useful or even valuable information: many roads and buildings (for example fire towers and wardens’ camps, and routes to them) no longer appearing on the newer 7 ½ minute maps show up on these. Also, I personally “see” many things better on them, especially big mountains or ranges. 

They can easily be downloaded in quarter-panels from the UNH Historic Maps of New England site: http://docs.unh.edu/nhtopos/nhtopos.htm Once reaching this point look at Maine maps and find the listing of all their collection (it is not complete: I have some editions they do not own). You will notice many have different generations of maps and some have only Provisional Maps as the series was ended before these areas were deemed worthy of significant effort.

One ready example of how things have changed is the Katahdin Map. If you look at the SE corner portion of the Katahdin map for 1930 and then 1949 you will see significant differences (beyond the map color) as the effects of logging and then Baxter State Park were felt. (The St. Johns Trail of the 1930 quad was a victim of logging more than park development.)  There is also an unusual shaded relief version of this map which makes interesting comparison. There is much to be learned from these older maps.

Regarding 7 ½ minute maps, there is a State of Maine site but, especially since it was “improved” last year, I have a lot of trouble with it. I recommend going to the USGS.gov site, then the Store, then Map Locator & Downloader. Here it is: http://store.usgs.gov/b2c_usgs/usgs/maplocator
From here you can drive yourself crazy shrinking the map OR find the Search box and type in the quadrangle you want. For instance I went to The Traveler, Maine, and got here:
From here, click on the balloon and you will have choices of maps and sizes, and the option to download or buy (if you really want to buy them you should know that some sizes are not available, such as the 15 minute sheet). I clicked the 7 ½ from 2011 (!) and then the download button above it. It is downloading as we speak. Printing from the USGS site is your department;  I own most of the maps I use, so I have not need maps printed from this; this is good as I don’t know how to divide the image into quarters to print it. (Incidentally, regarding printing, the 15 minute sheets are actually smaller than the 7 ½ sheets and they print easily.)

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