igic cadastral, boundaries, plss workgroup project - new authoritative gis county boundary lorraine...
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![Page 1: IGIC Cadastral, Boundaries, PLSS Workgroup Project - New Authoritative GIS County Boundary Lorraine Wright (Chair) Indiana Department of Environmental](https://reader030.vdocument.in/reader030/viewer/2022032517/56649caf5503460f9497285e/html5/thumbnails/1.jpg)
IGIC Cadastral, Boundaries, PLSS
Workgroup
Project - New Authoritative GIS County Boundary
Lorraine Wright (Chair)Indiana Department of Environmental ManagementOffice of Land QualityScience Services BranchGIS and Engineering Section
Comments and suggestions welcome(317) [email protected]
IGIC website: www.igic.org
Workgroup website:http://igic.org/committees/cadboundplss.html
![Page 2: IGIC Cadastral, Boundaries, PLSS Workgroup Project - New Authoritative GIS County Boundary Lorraine Wright (Chair) Indiana Department of Environmental](https://reader030.vdocument.in/reader030/viewer/2022032517/56649caf5503460f9497285e/html5/thumbnails/2.jpg)
Building a New Authoritative GIS County Boundary
Layer for Indiana Based on County Data and County Participation
![Page 3: IGIC Cadastral, Boundaries, PLSS Workgroup Project - New Authoritative GIS County Boundary Lorraine Wright (Chair) Indiana Department of Environmental](https://reader030.vdocument.in/reader030/viewer/2022032517/56649caf5503460f9497285e/html5/thumbnails/3.jpg)
GIS County Boundary Workgroup Participants
Lorraine Wright - IDEM
Michael Stevenson - Gibson, Co Surveyors Asso.
Rick Hill - IGS, INMAP
Bryan Catlin - Marion
Steve Hook - Noble
Shaun Scholer - Wayne
Dave Estes - Allen
John Howe - Gibson
Phil Worrall - IGIC
Jim Milburn - Hancock
Robert Muller – State Land Office
Jason Coyle - ISPLS
Ryan Swingley –Seiler Instruments
Jim Sparks – IN GIO
Gunty Allen - Wayne
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Cadastral, Boundaries, PLSS Workgroup Projects
•T
ie Card P
roject – PLS
S
Surveyor T
ie Card Layer
(INM
AP
)
•N
ew G
IS C
ounty Boundary -
Point, Line, and P
olygon Layers
•G
overnment Land O
ffice (G
LO) R
ecords –
(Fe
dera
l, Sta
te, &
Co
unty
Re
cords linke
d in GIS
)
![Page 5: IGIC Cadastral, Boundaries, PLSS Workgroup Project - New Authoritative GIS County Boundary Lorraine Wright (Chair) Indiana Department of Environmental](https://reader030.vdocument.in/reader030/viewer/2022032517/56649caf5503460f9497285e/html5/thumbnails/5.jpg)
Tie Card Pilot Project
• Grid Points• Statewide Grid Point Naming Convention• Scanned Tie Cards• Renaming Software (need Adobe Reader)• Database Table (Access)
– automatically created when using Renaming Software
• Database included Tie Card hyperlink• Click on map hyperlink and see scanned Tie Card pop-up• Training materials on website along with a video step by step
Components
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• Grid Point File Naming Convention (approximate section corner and section division corners )
– IN02_T23NR06E03_08
– State Name and Principal Meridian – IN02 – Township Number – T23 – Township Direction – N – Range Number – R06 – Range Direction – E – Section – 03 – Grid Number – 08 (Grid numbering system begins with 00 in
upper left hand of section and ends in 80, bottom left corner)
Tie Card Project
Developed Statewide Grid Point Naming Convention
![Page 7: IGIC Cadastral, Boundaries, PLSS Workgroup Project - New Authoritative GIS County Boundary Lorraine Wright (Chair) Indiana Department of Environmental](https://reader030.vdocument.in/reader030/viewer/2022032517/56649caf5503460f9497285e/html5/thumbnails/7.jpg)
Grid Points are numbered00-80 in each section
Approximation of ¼, ¼, ¼ corners
Tie Card Project
NW NE
SW SEComputer generatedpoints
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Grid point representationof section and¼ corner
Grid Point numbers(00, 04, 08,36, 40, 44,72, 76, 80)
IN02_T23NR06E03_08
NW Corner NE Corner
SW Corner SE Corner
Tie Card Project
IN02_T23NR06E03_80
IN02_T23NR06E10_08
![Page 9: IGIC Cadastral, Boundaries, PLSS Workgroup Project - New Authoritative GIS County Boundary Lorraine Wright (Chair) Indiana Department of Environmental](https://reader030.vdocument.in/reader030/viewer/2022032517/56649caf5503460f9497285e/html5/thumbnails/9.jpg)
Building a New Authoritative GIS County Boundary
Layer for Indiana Based on County Data and County Participation
![Page 10: IGIC Cadastral, Boundaries, PLSS Workgroup Project - New Authoritative GIS County Boundary Lorraine Wright (Chair) Indiana Department of Environmental](https://reader030.vdocument.in/reader030/viewer/2022032517/56649caf5503460f9497285e/html5/thumbnails/10.jpg)
New Authoritative GIS County Boundary
• Need for new GIS County Boundary• Design/process - Template• Development of [pilots]
– Allen, Gibson, Marion, Noble, and Wayne• Develop process for maintenance of a new GIS
County Boundary layer for the IndianaMap
![Page 11: IGIC Cadastral, Boundaries, PLSS Workgroup Project - New Authoritative GIS County Boundary Lorraine Wright (Chair) Indiana Department of Environmental](https://reader030.vdocument.in/reader030/viewer/2022032517/56649caf5503460f9497285e/html5/thumbnails/11.jpg)
New GIS County Boundary - Why?
• Need to match GIS data across counties by using a common boundary– Federal GIS data mandates (use standards)– State GIS data efforts are to have seamless data across county boundaries– County 911 calls – across adjacent counties– Match Boundaries – across adjacent counties
• Civil Township• County Boundary• Parcel Boundary (adjoining counties)• PLSS Boundaries• Street/Centerlines• Other
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GIS County Boundary LayersDesign/Process
• Inventory – Different Scales– Census – Newberry Library– INDOT– IGS– 92 Individual County Boundaries– Southern Indiana Boundary
• Court case, coordinates on paper, DNR created shapefile– Northern Indiana Boundary Retracement Survey
• Ongoing
• Need better accuracy – state-wide
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County Boundary – Identified Laws/References (Design/Process)
Sources for County Boundary Legal Descriptions• Indiana laws – IN Revised Statute 1852 (multiple counties), follow
changes– IC 36-2-1-1 - Names of counties
Sec. 1. Indiana is divided into the ninety-two (92) counties named in this section. The boundaries of these counties existing on August 31, 1981, remain in effect until changed in the manner prescribed by section 2 of this chapter…
• County Boundaries Book– Legal references for county boundary descriptions– Published in 1933
• Newberry Library– History of Indiana Counties– Historical and current Indiana boundary shapefiles– Individual County Boundary Chronologies through 1981
• Individual County Surveyor Offices
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Developed a Disclaimer
Location of the points in this GIS County Boundary Layer are approximate and should not be used for surveying and are NOT APPROVED by a COUNTY SURVEYOR for surveying purposes. Contact the County Surveyor’s Office when conducting research for surveying.
GIS County Boundary LayersDesign/Process
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GIS County BoundaryDesign/Process
• County Boundary With Point Features Developed First – Acquire County Boundary legal descriptions– Identify PLSS corners and section lines that define boundary– Associate the legal information to the boundary points
• Best available OR Grid Points– Use County Boundary Template (available to counties)
• for documenting data collection process– Counties can use best available data to create boundary or use
the Grid Points – Counties decide– Develop line and polygon layers
• New GIS County Boundary– Best available boundaries will be on IndianaMap as County
Boundaries become available
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Legal Description Call State Name Conv.
Northeast Corner of Section 15, T17N, R5E IN02_T17NR05E15_08 Beg
Southeast Corner of Section 34, T17N, R5E IN02_T17NR05E34_80
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GIS County BoundaryDesign/Process
• Developed Template for New GIS County Boundary– Attributes– Structure (still refining)
• Need to be able to change GIS boundary points if GIS data is improved (documentation)
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• New GIS County Boundary • Use best available data • Adjacent Counties to determine best common
boundary line• Communication between the County Surveyor
and GIS staff - important part of this process • New GIS County Boundary Template will be
available for Counties • Counties can import County Data into Template
GIS County BoundaryDesign/Process
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GIS County BoundaryDesign/Process
• Template Attributes being refined for• Field length• Field type
• Maintenance procedures • Still to be worked out
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GIS County BoundaryDesign/Process
• Better quality GIS County Boundary’s improve quality of associated layers
• PLSS, TR Section, Civil Township, other
• Pilot Counties: Allen, Gibson, Marion, Noble, and Wayne County
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IGIC Cadastral, Boundaries, PLSS Workgroup
Working with Surveying Community
Participants• Indiana Geographic Information Council (IGIC) –
– federal, state, county, local, private• Indiana Society of Professional Land Surveyors (ISPLS)• Office of the Indiana State Geodetic Advisor• Indiana County Surveyor’s Association• Indiana Geological Survey• Private Companies
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Boundaries, Cadastral and PLSS Workgroup
• http://www.igic.org/committees/cadboundplss.html
Lorraine Wright (Chair)Indiana Department of Environmental ManagementOffice of Land QualityScience Services BranchGIS and Engineering Section
(317) [email protected]