About Amerisurv| Contact    
Magazine | Newsletter    
Flickr Photos | Advertise    
HomeNewsNewsletterAmerisurv DirectoryJobsStoreAuthorsHistoryArchivesBlogVideosEvents
Register to receive the Amerisurv Newsletter | Also See Our LiDAR News Newsletter | RSS Feed  
advertisement


Subscriptions
Software Reviews
Sponsored By

Continuing Series
     RTN
An RTN expert provides everything you need to know about network-corrected real-time GNSS observations.
Click Here to begin the series,
or view the Article PDF's Here
76-PageFlip Compilation
of the entire series
Test Yourself

Got Answers?
Test your knowledge with NCEES-level questions.
  Start HERE
Meet the Authors
Check out our fine lineup of writers. Each an expert in his or her field.
Wow Factor
Sponsored By


Product Reviews
Partner Sites

machinecontrolonline 


lbszone.com

GISuser.com

GeoJobs.biz

GeoLearn

 

Spatial Media LLC properties

Associates

ASPRS

newsnow 

  The American Surveyor     

Public Land Survey System (PLSS) data - download, connect, or stream into Google Earth Print E-mail
Written by Glenn Letham (GISuser)   
Thursday, 24 May 2007

Looking for PLS data for your GIS? Here's a couple of very useful resources you should consider. These include the Land Survey Information System (BLM) - available via download (SHP) or connection to a web service - and a cool utility from Earth Point enabling users to specify a location and map the data using Google Earth. Requested data are extracted and provided as a KMZ.

About the PLSS

Recall the Public Land Survey System also called the Rectangular Survey System is the foundation for many survey-based land information systems. Downloading PLSS GIS shapefiles from http://www.geocommunicator.gov/GeoComm/lsis_home/home/index.html. To select and download data, select the Map Viewer and Download button. Once on the download site use the State Tab or County Tab (next to the words << Download) to select and download data for an entire state or county. To download just one or a few townships use the Township Selection Tool. Use the Quick Start Guide or Viewer Help on the download site for more information on getting started.

The PLSS data is also available as a map service for use in GIS applications. The map service allows users to stream the data live to your desktop GIS.
Map Server URL: http://www.geocommunicator.gov/
Map Service: BLM_MAP_PLSS

The Shapefiles are for use with GIS software such as ArcInfo, ArcView, ArcExplorer (download for free) or other GIS software. Shapefiles come with the following data:
Townships
Sections
Subdivisions of Section
 Horizontal Control Information
(Latitude and Longitude)
Metadata
 
Note: The PLSS data is coming from the National Integrated Land System (NILS). The current PLSS data are in NAD83 datum. The PLSS shapefiles available from LSIS before May of 2004 were in NAD27 datum.

Contribute Data to LSIS - see http://www.geocommunicator.gov/GeoComm/lsis_home/datacall/default.shtm

Geocoding

The Township Geocoder allows for the conversion of Latitude and Longitude (Lat/Long) values into Township, Range and Section values. Likewise, Township, Range and Section values can be converted into polygon centroids in Lat/Long format. There is also an option to bulk upload a file containing Townships or Lat/Long values and to have their respective Lat/long or Township values be returned.
http://www.geocommunicator.gov/GeoComm/lsis_home/townshipdecoder/index.html

Interested in viewing Township / Range data in Google Earth?

Jump to the following section on the Earthpoint webpage - http://www.earthpoint.us/townships.aspx. Users can elect to view data from the BLM or National Atlas. Then, enter some values like State, Meridian, Township, Range. The you simply fly to "Google Earth" - the data you selected will appear on a map within Google Earth. If you'd rather see coverage for the entire country then you can view either BLM Township, Range, and Section or National Atlas Township and Range.

PLS data as seen in Google Earth (Source: Earth Point)

On the Earth Point weblog a useful tutorial explains in detail how to create a view in Google Earth that displays a plat map draped over satellite imagery for an area of interest. See Here

Useful Weblinks:

 
< Prev   Next >

deliciousrssnewsletterlinkedinfacebooktwitter

Amerisurv Exclusive Online-only Article ticker
Featured Amerisurv Events
List Your Event Here
please
contact Amerisurv


Google
 
AMERISURV TOP NEWS

Trimble Intros
S5 Ti-M

GOT NEWS? Send To
press [at] amerisurv.com
Online Internet Content

Sponsor


News Feeds

 
Subscribe to Amerisurv news & updates via RSS or get our Feedburn
xml feed

Need Help? See this RSS Tutorial

Historic Maps
Careers

post a job
Reach our audience of Professional land surveyors and Geo-Technology professionals with your GeoJobs career ad. Feel free to contact us if you need additional information.

 

Social Bookmarks

Amerisurv on Facebook 

Amerisurv LinkedIn Group 

Amerisurv Flickr Photos 

Amerisurv videos on YouTube 

twitter

 




The American Surveyor © All rights reserved / Privacy Statement
Spatial Media LLC
905 W 7th St #331
Frederick MD 21701
301-620-0784
301-695-1538 - fax