Section, Township, Range (PLSS) Locator
Posted 19 July 2006 - 09:09 PM
Searching for a solution to this problem I recently came across a Section, Township, Range Geographical Locator at http://www.esg.montana.edu/gl/. Click on the "TRS-Data" link. It's based on a statistical model that predicts where the center of a specified Section is, and gives you the Lat-Long of that position. I have found that it works very well. It usually will give you a Lat-Long that is somewhere within the specified Section. Sometimes, because of fractional Sections, the Lat-Long may be just outside the Section, but still close enough that you can pan to the correct Section. In addition to the Section, Township, and Range, you also need to specify the relevant Principal Meridian.
It also works in reverse. By spcifying a Lat-Long under "XY-Data", the Geographical Locator gives you a lot of information about that point including the Section, Township and Range. By using cut and paste, you can transfer coordinates back and forth between ExpertGPS and the Geographical Locator Web Page.
For the programmers, the free DLL's for the Lat-Long to PLSS and the PLSS to Lat-Long algorithms are available at http://www.geocities...ien/trs2ll.html.
Posted 21 July 2006 - 06:19 PM
As usual, "You Dun Good"...
I've been using the tiff files of a quad for a scanned map and calibrating just to get the "collar data". Your link will be much quicker and has much more data as well, and all right at one's fingertips. I'll especially use the "X Y" to work backwards to obtain the Sec,Twp, and R.
Posted 21 July 2006 - 06:28 PM
Thanks for finding that, Tim! I discovered that link many years ago, and have been trying to find it again ever since we started discussing PLSS on the forum.
Posted 30 July 2006 - 01:36 AM
Posted 17 August 2006 - 01:16 PM
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