Official Sources of Mapping Information

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Re: Official Sources of Mapping Information

Postby WeeeZer14 » Thu Dec 01, 2011 2:10 am

NY/NJ/CT - Unofficial, but a wealth of knowledge

NJ - State DOT and GIS Maps

NY - State GIS Maps

TN - State GIS Maps State DOT Maps Knox County GIS
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Re: Official Sources of Mapping Information

Postby vectorspace » Mon Feb 11, 2013 11:27 pm

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Re: Official Sources of Mapping Information

Postby timl2k12 » Tue Jan 29, 2013 9:36 pm

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Re: Official Sources of Mapping Information

Postby thom_p » Thu Feb 23, 2012 10:22 pm

Tennessee: Hamilton County:
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Re: Official Sources of Mapping Information

Postby Spil » Thu Feb 16, 2012 6:01 pm

WeeeZer14 wrote:NY - State GIS Maps

This has been updated to GIS.NY.Gov

And, wow, how bad is it when the state GIS maps have three road-name errors just within a block of my house? Hate to see how bad the rest of the state must be!
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Re: Official Sources of Mapping Information

Postby OscarC » Wed Nov 30, 2011 2:55 am

MN DOT Site:
- County Maps:
- City Maps: ... alpha.html
- Other (Metro maps, highways, traffic maps, etc):
- Construction maps:

Local government sites: ... Star&sp2=y

I've also used different sources of zip code boundary sites to help find some boundaries, especially in rural areas, but don't know about the copyrights or licensing on them so I won't post them.
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Re: Official Sources of Mapping Information

Postby nnote » Fri Mar 15, 2013 10:12 pm
Central Arizona
Also for Highway info
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Re: Official Sources of Mapping Information

Postby mwhead2 » Mon Feb 27, 2012 7:00 pm

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Re: Official Sources of Mapping Information

Postby marigolds » Wed Feb 27, 2013 4:05 pm

State of Missouri spatial data clearinghouse:
This is the download link for every transportation file provided by the state:
But you are better off going here first and toggling on the transportation layers:

They also have webservices:
This is every road in the state cataloged by MoDOT as an ArcGIS REST endpoint:
And as a KML generator REST endpoint:
These are ArcGIS REST endpoints for every quarterly updated of the roads layers:
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Re: Official Sources of Mapping Information

Postby mapcat » Mon Jul 09, 2012 10:55 pm

CBenson wrote:Although, not really an official source of mapping information, I recently came across this site: (National Traffic and Road Closure Information). It provides links to a bunch of sources (including links to all the state DOTs) that I find useful in addressing some URs.

Thanks. Added.
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