Official Sources of Mapping Information

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Official Sources of Mapping Information

Postby jondrush » Mon Nov 28, 2011 5:28 pm

I'd like to start a stickied thread that will provide new editors a list of official sources of mapping information from their state governments. Please provide any resources you know of and I will edit this post as I get time. I'd prefer sources that do not require separate software to be downloaded beyond PDF readers and browser plug-ins. Unofficial sources can be listed too, but many of them are mash-ups and unstable or unreliable.

Alabama
Alabama
Alaska
Arizona
Arkansas
---Statewide Interactive Map

California
Colorado
Connecticut
Delaware
District of Columbia
Florida
Georgia
Hawaii
Idaho
Illinois
---County, City and Township Maps

Indiana
---Statewide Interactive Map
---Statewide Map

Iowa
---County and City Maps

Kansas
---County Maps
---City Maps

Kentucky
---Statewide Interactive Map

Louisiana
Maine
Maryland
---Grid maps
---Incorporated town maps
---Interactive map

Massachusetts
---Statewide map

Michigan
---Statewide Interactive Map

Minnesota
Mississippi
---Statewide Interactive Map

Missouri
---County Maps

Montana
Nebraska
---Statewide Map

Nevada
New Hampshire
New Jersey
---County maps

New Mexico
New York
---NYS Orthos Online (bookmarklet available in the Waze Wiki)

North Carolina
North Dakota
---Statewide Interactive Map

Ohio
Oklahoma
Oregon
Pennsylvania
---County Maps
---Municipal Maps
---Many other types of maps

Rhode Island
South Carolina
South Dakota
---Statewide Interactive Map

Tennessee
Texas
Utah
Vermont
Virginia
Washington
West Virginia
Wisconsin
Wyoming
---Statewide Map Requires downloads, provided by University of Wyoming
Last edited by GizmoGuy411 on Wed Oct 23, 2013 1:52 pm, edited 8 times in total.
Reason: added NY Orthos link ~ Spil
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Re: Official Sources of Mapping Information

Postby jasonm128 » Mon Nov 28, 2011 11:30 pm

Massachusetts
=============
Official state transportation map:
http://www.massdot.state.ma.us/highway/ ... onMap.aspx

City of Cambridge, MA:
http://www.cambridgema.gov/GIS/FindMapA ... %2FAtlases
Best street reference I've found so far is the zoning map:
http://www.cambridgema.gov/cdd/cp/zng/z ... p_9600.pdf


Denver, CO
============
Precompiled (PDF) maps:
http://www.denvergov.org/maps/category/downloads

Interactive GIS data browser (very difficult to find):
http://www.denvergov.org/denvermaps/rep ... &cat=ccust
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Re: Official Sources of Mapping Information

Postby mapcat » Tue Nov 29, 2011 1:54 am

Great idea. Here are a few I've used in the past. Some are not compatible with Chrome.

Arkansas: GeoStor Viewer (statewide GIS/aerial imagery)
Illinois: General Highway Maps (b/w city and county map .pdfs, some very old)
Indiana: IndianaMap (statewide GIS/aerial imagery)
Indiana: State Transportation Map (.pdf of free tourist map)
Iowa: City and County maps (.pdfs of DOT-produced street maps, generally very current)
Kansas: County Maps and City Maps (.pdfs and .jpgs)
Kentucky: The Commonwealth Map (statewide GIS/aerial imagery) (ESRI)
Michigan: Michigan PR Finder (Physical Road finder: statewide GIS & aerial imagery)
Mississippi: Mississippi Geospatial Clearinghouse (statewide GIS/aerial imagery) (ESRI)
Missouri: County Maps (.pdfs of every county road map in the state)
Nebraska: Nebraska Imagery Lookup Map (statewide GIS/aerial imagery
Nebraska: State Highway Map (.pdf of free tourist map)
North Dakota: ND Hub Explorer (statewide GIS/aerial imagery)
Oklahoma: Oklahoma DEQ Data Viewer (statewide GIS/aerial imagery)
South Dakota: SDDOT Viewer (statewide GIS/aerial imagery) (ESRI)
West Virginia: Base Map Viewer (statewide GIS/aerial imagery)
Wyoming: WyGISC Data Server (statewide imagery; addl info via download)

Nationwide: US Census Bureau maps of all counties and incorporated places, listed by state (usually not as accurate as the above)
Nationwide: Beacon (approx 200 city/county local gov't GIS linked through vendor's site; mostly from midwestern states)

Many more exist for individual cities/counties if you desire to start another list. Actually, it would be easier for people to just search for "[cityname] GIS" and go from there.
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Re: Official Sources of Mapping Information

Postby bgodette » Tue Nov 29, 2011 6:45 am

Since mapcat mentioned them already ESRI also runs a service called ArcGIS Online and can load GIS info from a variety of sources, including newer Tiger datasets. However you do need to be mindful of what your "basemap" source is as they might not be license compatible with Waze.

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Re: Official Sources of Mapping Information

Postby jondrush » Tue Nov 29, 2011 7:07 pm

Yes, I'm trying to avoid third party vendors or viewers so we don't run afoul of any licensing issues. I know there are free GIS data viewers out there, but the one's I've looked at seem scammy or malware-like.
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Re: Official Sources of Mapping Information

Postby mapcat » Tue Nov 29, 2011 9:56 pm

jondrush wrote:Yes, I'm trying to avoid third party vendors or viewers so we don't run afoul of any licensing issues. I know there are free GIS data viewers out there, but the one's I've looked at seem scammy or malware-like.

ESRI's viewer isn't scammy or malware-infested. I don't use it much but when I do it's as a third source. Layers include their own topo maps, street maps, and aerials, plus OSM and Bing products.

In case anyone feels reluctant to use this private company's viewer, the list identifies the states who use it. IANAL, but since these states license it for public use, I don't think there's an issue. Here's the disclaimer from Mississippi's viewer:

Disclaimer

Information presented on this website is considered public information and may be distributed or copied. Use of appropriate byline, photo, or image credit is requested. It is strongly recommended that Mississippi Geospatial Clearinghouse (MGC) data be acquired directly from a MGC server and not through other sources that may alter the data in some way. While the MGC makes every effort to provide accurate and complete information, various data such as names, telephone numbers, etc. may change prior to updating. The MGC welcomes suggestions on how to improve our web site and encourages notification of any errors. The MGC provides no warranty, expressed or implied, as to the accuracy, reliability or completeness of furnished data.

Some of the documents on this server may contain live references or pointers to information created and maintained by other organizations. Please note that the MGC does not control and cannot guarantee the relevance, timeliness, or accuracy of these outside materials.

For security purposes and to ensure that this service remains available to all users, the State of Mississippi employs measures to identify security risks and vulnerabilities to prevent the upload, modification, or otherwise damage to data. Unauthorized attempts on this web site are strictly prohibited and may be punishable under the Computer Fraud and Abuse Act of 1986 and the National Information Infrastructure Protection Act.
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Re: Official Sources of Mapping Information

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

Minnesota--
MN DOT Site:
- County Maps: http://www.dot.state.mn.us/maps/cadd/html/counties.html
- City Maps: http://www.dot.state.mn.us/maps/cadd/ht ... alpha.html
- Other (Metro maps, highways, traffic maps, etc): http://www.dot.state.mn.us/maps/index.html
- Construction maps: http://www.dot.state.mn.us/roadwork/current.html

Local government sites: http://www.state.mn.us/portal/mn/jsp/co ... 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 weeezer14 » Thu Dec 01, 2011 2:10 am

NY/NJ/CT - http://www.nycroads.com/ Unofficial, but a wealth of knowledge

NJ - http://www.nj.gov/transportation/gis/ State DOT and GIS Maps

NY - http://www.nysgis.state.ny.us/ State GIS Maps

TN - http://tnmap.state.tn.us/viewer/ State GIS Maps
http://www.tdot.state.tn.us/maps.htm State DOT Maps
http://www.kgis.org/KGIS_Lite/MapViewer.html Knox County GIS
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Re: Official Sources of Mapping Information

Postby CBenson » Thu Dec 01, 2011 11:22 am

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Re: Official Sources of Mapping Information

Postby gettingthere » Thu Dec 01, 2011 5:19 pm

California GIS Map & Information (this site is hosted by a 3rd party but includes a comprehensive list of California GIS sites):

http://www.coordinatedlegal.com/gis.html
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