[pct-l] Understanding halfmile's maps

[Meike]

Great! Thanks a lot for the explanations and the link. Something learned 
today!


Am 14.01.2014 16:32, schrieb enyapjr at comcast.net:
> > Is there any...  Legend maybe? Explanation what the symbols, colors, 
> hatchures, lines are supposed
> > to tell me. Is there anything like that?
>
> The following should have more than you need to know for symbols on 
> USGS topo maps:
> <http://pubs.usgs.gov/gip/TopographicMapSymbols/topomapsymbols.pdf>
>
>
> > I am particulary interested in the red lines...
>
> I 'believe' (??) you're referring to "Section" lines, & the thicker 
> ones are "Township" & "Range" lines from the
> Public Lands Survey System (PLSS)...
> In a 'perfect' world a "Township" is a 6 miles by 6 miles square, 
> resulting in 36 "sections" in a Township...
> But it's NOT a perfect world - so 'adjustments' have to be made here & 
> there, thus some lines are not
> 'square' and some Sections are not a full mile tall or wide...
> Check out 
> <http://www.nationalatlas.gov/articles/boundaries/a_plss.html> for a 
> better, complete explanation -
> or Google "PLSS" for other websites...
>
>
> > ...usually rectangular areas with darker colors?
>
> Not 'positive' - most seem to relate to 'ownership', though there is 
> much more 'private' (non-public) land that is
> not shaded, however - perhaps when Halfmile is no longer 'busy' 
> updating the maps for 2014 he can answer that.
>
> Happy trails!!!
> Jim (PITA)