collaboration process for establishing authoritative county boundary layers: (igic- new gis* county...

Collaboration Process for Establishing Authoritative County Boundary Layers:

(IGIC- New GIS* County Boundary)

Lorraine Wright

2014 Indiana GIS ConferenceIndianapolis, Indiana

May 8, 2014

*Geographic Information SystemLorraine Wright, IDEM May 7, 2014

GIS County Boundary Workgroup Participants

Lorraine Wright - IDEMMichael Stevenson - Gibson,

Co Surveyors Asso.Rick Hill - IGS, INMAPBryan Catlin - MarionSteve Hook - NobleShaun Scholer - WayneDave Estes - AllenJohn Howe - Gibson

Phil Worrall - IGICJim Milburn - HancockRobert Muller – State Land OfficeJason Coyle - ISPLSRyan Swingley - ESP Associates, P.A. Jim Sparks – IN GIOGunty Atkins – WayneZack Beasley – Tippecanoe, Co Surveyors Asso.

Lorraine Wright, IDEM May 7, 2014

Cadastral, Boundaries, PLSS Workgroup Projects

• Tie Card Project – GIS PLSS Surveyor Tie Card Layer (INMAP)– State-wide naming convention enables uniform look and feel

across the state– Helps in identifying corners to use in revising GIS PLSS layers

• New GIS County Boundary - Point, Line, and Polygon Layers– Pilot – Five Counties: Allen, Gibson, Noble, Wayne, Marion

• Government Land Office (GLO) Records – IGIC Workgroup focusing on GLO state records– Eventually like to have GLO federal, state, & county Records

linked to GIS

IGIC Cadastral, Boundaries, PLSS Workgroup


Tie Card Pilot Project

• Grid Points – (approximate ¼ section. Sec, T,R)• Statewide Grid Point Naming Convention

• IN02_T23NR06E03_08

• Scanned Tie Cards• Renaming Software (need PDFs & Adobe Reader)• Database Table (Access) provided with software– Automatically created when using Renaming Software– Database should include 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 instructions– OR (next page)

Components



Tie Card Pilot Project• The County

– Five Counties created databases with county hyperlinks to Grid Points/or County corners

– Added the state-wide file naming convention to county data (hyperlinked Tie Card to Grid Point) and posted on IndianaMap

– Next step: New Counties can share their info on county’s Data Sharing WMF/WSF website

– County data can be included on IndianaMap on the “PLSS Surveyor Tie Cards” Layer


Lorraine Wright, IDEM Mary 7, 2014

Tie Card Project Layer

Building New Authoritative GIS County Boundary Layer for Indiana

Based on County Data and County Participation

Developed a disclaimer for layer

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.



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



County Boundary – Who is responsible for what

• State Land Office - State Boundary• County Surveyor - County Boundary• Census

– National Data Steward, NSDI– BLM & Census working together (PLSS and Boundaries)

• Indiana Certification Officer (certifies boundaries)• Indiana Geographic Information Council (new GIS County Boundary)


Census - BackgroundCensus - BackgroundBoundary & Annexation Survey (BAS)Boundary & Annexation Survey (BAS)

Census collects boundaries as of January 1 each year annexations, de-annexations, incorporations, mergers

Survey counties, MCDs (townships) & places (cities, towns, villages) and AIAs:

Indiana: 568 Places Nation: 19,519 Places 1,008 Townships Townships: 16,360 92 Counties Counties: 3,031

Two “parts” to BAS: 1) provide geospatial changes (change polygons in BAS TIGER file, not just

submittingyour file)

2) provide legal documentation for changes

Can also provide boundary corrections, not just the legal changes (more on this shortly) Gail A. Krmenec &


Census - What is County ConsolidatedCensus - What is County ConsolidatedBoundary & Annexation Survey (C-BAS)? Boundary & Annexation Survey (C-BAS)?

• County responds to BAS for governments within the county (entities must agree)

• Not all entities in county have to agree to consolidation for county to be part of County Consolidated BAS universe

Census - County Consolidated BASCensus - County Consolidated BASBenefitsBenefits

•(Most) counties can participate digitally •Counties may already collect and maintain the most up-to- date boundary information for entities in county (if not, this is a great way to get it)•Provides a service to the entities in the county•Provides continuity of BAS contacts and response as administrations, staff change in local governments•Counties know BAS program, requirements, what to do!

Census - County Consolidated BASCensus - County Consolidated BASBenefits (con’t)Benefits (con’t)

•Reduces duplication of effort (with no C-BAS agreement in place, Bureau still surveys all entities, must rectify discrepancies)•Saves $$$ (i.e., taxpayer $) because Bureau has to engage fewer entities•Provides “Roll-Up” of boundaries to county (maybe State?)•Contributes to more accurate NSDI (Under OMB Circular A-16, Census Bureau is boundary steward for the Nation)•Can reduce inaccuracies (boundary corrections)

Gail A. Krmenec &Lorraine Wright, IDEM May 7, 2014

Census - Additional Datasets Desired Census - Additional Datasets Desired with BAS Submission (new!)with BAS Submission (new!)

Parcel Dataset PLSS Dataset

Both of these data sets can help the Bureau improve the overall boundary quality in TIGER.

Note: used as reference for boundary alignment; parcel and PLSS data not inserted in TIGER; not released in public Census products


Census BAS

• Interested in Consolidated BAS?

Contact:Gail A. Krmenec

U.S. Census [email protected]

(630) 288-9258


IGIC - New GIS County Boundary• Developed Pilot

– Allen, Gibson, Marion, Noble, and Wayne

• Designed Template– With disclaimer not to be used for surveying purposes– Attributes and Structure

– Tested Gibson, Noble and Wayne via Data Sharing WFS

• Maintenance - Developing process for new GIS County Boundary layer for the IndianaMap



IGIC - New GIS County Boundary

• County Boundary With Point Features Developed First – Counties can use their best available data to create boundary points or use the

Grid Points - County decides– Use County Boundary Template (available to counties)

• Allows for documenting data collection process or• County attributes mapped to Template attributes and then loaded into Template

– Acquire County Boundary legal descriptions– Identify PLSS corners and section lines that define boundary– Associate the legal description corners to boundary points in template

• Best available OR Grid Points– Develop line and polygon layers from point layer

• New GIS County Boundary– Share county best available data (points, lines, & polygon) through County Data

Sharing WMF/WFS– County Layers would be accessible on IndianaMap as County Boundaries

become available


Design/Process


Process for New GIS County Boundary

• County Legal Description– Historical descriptions in Dropbox folder– Talk with county surveyor to see if there is a newer

description (if so, send copy to Lorraine)– Used as attributes in the template

• Identifies the original corners used to define county boundary


Wayne County Legal Description Information

In Template

Process/Documents for Reference(Dropbox)

• Grid Point Layer provides State-wide Naming Convention (PLSS)– Located in Dropbox Folder– Still developing Statewide Name Convention for

counties containing Non-PLSS data


County Web Feature Service (Data Sharing Agreement)

• Currently contains:– Local governmental unit boundary data– Boundary Type (municipality, precinct, fire, school,

tax districts, etc.)– Boundary Name (name/identifier of municipality,

precinct, fire, school, tax districts, etc.)


Process/Documents for Reference(Find in Dropbox)

• County contact needs access to Dropbox – Send Phil Worrall email to request access to folder– Identify County Name, Contact name , and

Dropbox County Boundary access in email subject line


Access the Template and Guidance DocumentsDropbox - https://www.dropbox.com/


Dropbox – IGIC County Boundaryhttps://www.dropbox.com/home#!/home/IGIC%20-%20County%20Boundary

Process/Documents for Reference(Dropbox)

• Attribute Description Document (in Word)– Explains types of information and choices

• Attribute Description Table – Name– Field type– Field length


Process

• Locate and download Geodatabase Template or Template Table format (Dropbox)

• Extract County Grid Points for County• GridPt layer provides naming convention

– Used in Template


Process

• Map County Attributes to Template Attributes– See Reference Documents

• ArcGIS users - Import County Data into Geodatabase

• Other GIS software users – Import County Data into Template Table format


•Common boundary lines•Both adjacent County’s to determine best common boundary line

• Communication Between the county surveyor, GIS staff and others county offices important part of this process

New GIS County BoundaryDesign/Process



County Web Feature Service (Data Sharing Agreement)

• “New GIS County Boundary” - place on the Web feature service as an independent layer

• County discussion– Will county retire previous County Boundary

layer?


Gibson GIS County BoundaryPointLinePolygon

Slide by Lorraine Wright, IDEM May 7, 2014

County data –John Howe, March 5, 2014


Noble GIS County BoundaryPointsLinePolygon

County dataSteve HookMarch 5, 2014

Slide by Lorraine Wright, IDEM May 7, 2014

Newest Project –Land Survey Records

Documents are the basis for Indiana’s land system:• Original Field Notes*• Federal Transcribed Field Notes• State Transcribed Field Notes*• County Transcribed Field Notes• Plat MapsEach set was transcribed by different people at different times and

may have differences in the information.


Lorraine Wright, IDEM May 7, 2014*Project Focus

IGIC & State Archives –State Government Land Office

Land Survey Records Pilot ProjectProject Goal• Scan the State Archive documents (State Original and Transcribed

Field Notes and Plat maps), • Name the digital files to be consist with the original index naming

convention, and then,• Link the scanned images to the PLSS section line layer or other non-

PLSS units (ex: Land Grants) as layers on IndianaMap.

•



Discussion / Comments

Lorraine WrightPh: (317) 234-0618

Email: [email protected]

Indiana Department of Environmental Management100 N. Senate Ave

MC 66-30 (1370) IGCN 1101Indianapolis, Indiana 46204-2251

collaboration process for establishing authoritative county boundary layers: (igic- new gis* county...

Documents

county records

county hyperlinks

county boundariescounty

county participationdeveloped

county surveyors office

plss workgroup lorraine

igic new gis

tie card hyperlinkclick