The Monroe County Planning Department

2012 Indiana GIS ConferenceBloomington, IN

5/9/2012

Using GIS to Analyze and Predict County Build-Out

Introductions

Jason Eakin, AICPAssistant DirectorMonroe County Planning Department

Christina MotilallSPEA Service Corps FellowMonroe County Planning Department

Kevin SonoffSPEA Service Corps FellowMonroe County Planning Department

Vital Statistics

The total land area of Monroe County is approximately 394 square miles

2010 Census population counts, contains 137,974 residents.

The planning jurisdiction of the County is approximately 370 square miles with a population of 50,993.

Monroe County Planning Department

Primary coordinating agency in the development, adoption, and implementation of county land use plans and policies

Provides current and long range planning services to county boards and general public

8 full-time employees (5 full-time planners)

2 IU SPEA Graduate Fellows

Subdivision Analysis: What is the goal?

More Effective Monitoring of Unfinished Subdivisions and Associated Infrastructure

Subdivision Analysis: What is the goal?

Improved Erosion Control Oversight

Subdivision Analysis: What is the goal?

Adequately Provide Emergency Services

Our Ideal Approach

Begin analysis. Temporal Analysis of

Infrastructure Completion

Proximity to Public Services

Inventory of Total Build-out and development potential

Rate of Absorption in relation to location

New Master Subdivision Layer

Our Ideal Approach

Identify all parcels that exist within county subdivisions.

- Subdivisions

Key

Our Ideal Approach

Remove Bloomington and Ellettsville planning jurisdictions from study area.

- Bloomington and Ellettsville Planning Jurisdiction

Key

Using building footprint layer, identify built and unbuilt parcels.

Our Ideal Approach

- Existing

- New

- Changed

Key

Our Ideal Approach

Create new built and unbuilt layers.

- Built

- Unbuilt

Key

What actually happened.

Problem: Discovered errors in new built and unbuilt layers.

Possible solution: Use master subdivision layer to reconcile missing parcels.

What actually happened.

Problem: Discovered missing subdivisions in master subdivision layer.

Possible solution: Use auditor plat catalog to identify missing subdivisions. Researched Recorder Plats

What actually happened.

Problem: Discovered subdivisions in Recorder plat catalog with additional phases and sections.

Possible solution: Merge planning database, recorder plat lists, auditor plat maps, and GIS data layers

A New Approach

Begin building a new master subdivision list in Excel using multiple sources. Planning Spreadsheet Auditor Records Recorder Database Existing Subdivision

Layer

A New Approach

Attribute ListMap of build-out over

time (Pre-90, 90-99, 00-Present)

Temporal Build Out (County Scale)

Clear Creek Township Pilot Study

Develop attributes for subdivision layer

Generate Built / Unbuilt Layers for subdivisions

Pilot Study Results

- Pre-1990

Pilot Study Results

- Pre-1990

- 1990-1999

Pilot Study Results

- Pre-1990

- 1990-1999

- Post 2000

County Built/Unbuilt Results

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Township

% B

uil

t O

ut

* = “Urbanized” Townships

GIS Subdivision Layer Results

Populated GIS Subdivision Layer to include Built/Unbuilt Status Each parcel’s attribute information includes:

Owner Name Address Tax ID Number Address Subdivision Name Acreage Property Class School District Built or Unbuilt Status

Where Are We Going?

Proximity to Service Analysis

Organized work flow between the Planning, Auditor, and Recorder Departments for ongoing maintenance of the Subdivision Layer.

Questions?