Regional GIS Users Group Meeting

Wednesday, October 31st, 200710:00 AM - 1:00 PM

Amphitheater, C - Level

www.atlantaregional.com/rgug

Cooperative Purchase AgreementSubcommittee

• Held meeting at Gwinnett Co on October 4, 2007. (Gwinnett, Hall, Henry participated)

• Best Example of a cooperative agreement: Centralina Council of Governments (Charlotte)– 11 counties involved– Regional Color Orthophotography– Individual counties decide on some or none of

other products• Impervious surface, footprints, centroids of structures,

edge of pavement, etc.

Specifications

• Based upon county standards– Highest

• 1” = 100’• 2 foot contours• Only for the Imagery

• Individual needs will be handle in the separate contracts

Example Gwinnett County

• Individual contracts for more data– LIDAR

• Flood planes

– Impervious Surface• Create 11 – 12 million in revenue

– DTM– Planemetrics– True Orthophotography

County Estimates

County Area in Square

MilesTotal Cost Per

County Year Purchased Purchase Price Vendors Resolution Scale Format

Barrow 163 $34,556 2004 $105,530 Land Air 6"

Bartow 470 $99,640 2006 $450,000 Photo Science 6" 1" = 600"

Carroll 504 $106,848 2004 Sanborn

Cherokee 434 $92,008 2007 Photo Science 6"

Clayton 144 $30,528 2006 $81,459 Pictometry

Cobb 344 $72,928 N/A

Coweta 446 $94,552 2007 Photo Science 12"

DeKalb 271 $57,452 2007 $12,000 Aerials Express 18"

Douglas 200 $42,400 2007 $55,000 Geodesy 6" 1" = 100' Tiff

Fayette 199 $42,188 2006 $145,000 Land Air 6" 1" = 100' Tiff

Forsyth 247 $52,364 2006 Pictometry 6"

Fulton 535 $113,420 2006 $347,739 Ayres Associates 6"

Hall 429 $90,948 2005 $200,000 Kucera 6"

Gwinnett 437 $92,644 2007 $580,000 Sanborn 6"

Henry 324 $68,688 2007 Photo Science 6"

Newton 279 $59,148 2006 Photo Science 6"

Paulding 315 $66,780 2007 Geodesy 6" 1"=100' GeoTiff

Rockdale 132 $27,984 2007 $7,500 Aerials Express 18"

Spalding 200 $42,400 2005 $78,000 Paragon / Kucera 6" 1"100 TIFF/TFW

Walton 330 $69,960 N/A

Total 6403 $1,357,436

Current Imagery Cooperative Purchase Agreement

Based on Earth Data Quote

Total Cost per square mile is $212 based on 6558 square miles.Total Cost $1,390,296Overage is $32,860 for a total extra cost of $1,643 per countyThis is subject to change.

City Estimates

What’s Next

• Reviewed example agreement with Sanborn and Earth Data– “Tentatively” agreed to the general terms- will need to

formalize the agreement

• Prepare RFP to be reviewed by RGUG• Distribute to Counties for verification• Present to ARC Board as a programmatic element for

Calendar year 2009

Aerials Express for 2008

Product Description

• 1.5-foot pixel, color, ortho-rectified• Flown in the 1st quarter of 2008.• Cover approximately 14,000 sq.

miles. • Receive one set of the imagery in

ECW and TIFF/TFW format, projected into State Plane NAD83 Georgia West Feet

Pricing

Number of Agencies

Price Per Agency

1 $17,500

2-3 $15,000

4-5 $12,500

6+ $10,000

Agreements need to be returned by January 15, 2008.

Regional Streets Data Subcommittee

• Held 3 meetings since last RGUG, next meeting November 8th

• Rockdale, Smyrna, ITOS, ARC• Reviewing compatibility of local

government data collection procedures against the GDOT/Federal data standards

• Developing ArcMap tool to facilitate street data generation

Examples of Data Conflicts

• Address• Road Names• Surface Width• Sidewalks if available• RESOLUTION: prioritized data items,

establishing standards

Regional Streets Data Model Highest Priority Items

• Address• Facility Operation• Length• Road names• Route Number• Route

Type/Jurisdiction• Shoulder Width/

Type

• Speed Limit• Surface Width/ Type• Travel Lanes• Traffic Signals if

available• Sidewalks if

available• Considering Turn

Lanes

Attributes Tool

Landuse Modeling Program

•20-County model•Landuse forecast•Small area population and

employment forecast•Generate input for Travel

Demand Model

Landuse Modeling Program

• DRAM/EMPAL– Disaggregated Residential Allocation Model

and the EMPloyment Allocation model

• PECAS– Production Exchange Consumption Allocation

System – Activity Allocation (HH and Jobs) Module– Space Development Module

• UrbanSim

Landuse Modeling Program

•Required GIS data:–Households by type–Employment by industry groups–Landuse–Zoning–Housing units and floor space–Price and assessed value…

Landuse Modeling Program

• Parcels – Received

• 16 Counties

– Not received• Carroll and

Paulding

– Line and point parcels

• Clayton and Coweta

• Tax records• Zoning

Hall

Fulton

Carroll

Bartow

Cobb

Coweta

Henry

Gwinnett

Walton

Cherokee

DeKalb

Newton

Paulding

Forsyth

Fayette

Douglas

Spalding

Barrow

Clayton

Rockdale

Hall

Fulton

Carroll

Bartow

Cobb

Coweta

Henry

Gwinnett

Walton

Cherokee

DeKalb

Newton

Paulding

Forsyth

Fayette

Douglas

Spalding

Barrow

Clayton

Rockdale

Landuse Modeling Program

• Building footprint – Received

• DeKalb / Fulton / Gwinnett /Hall

– Not received• Barrow / Bartow

– Under development • Clayton / Rockdale /

Paulding / Henry

– Next step– Future update

• GIS Training at ARC

• Migrating from ArcIMS 9.2 to ArcGIS Server platform• Implement Latitude Geographics Geocortex Essentials

interface for ArcGIS Server• How many are using ArcGIS Server?

• 2005 Pictometry-derived Ortho imagery soon to be released on Georgia GIS Clearinghouse…thanks Carl!

• 2007 Regionwide Pictometry Oblique and Ortho imagery and Electronic Field Study software still available

• 2007 Pictometry mosaicked GeoTIFF Ortho imagery may be available through USGS, pending approval

GIS Training, ArcIMS/ArcGIS Server and 2007

Pictometry

Other Announcements