1. NSW DCDB July 2010 BOB DAVIS, Team Leader DCDB Update BILL MILLER, Team Leader DCDB Upgrade

2. BACKGROUND Initial capture commenced 1989 using Genamap software and was completed in1993. Best available data was used : CMA cadastral maps drawn from old parish maps and hand plotted plans ranging in scale from 1:2000 to 1:100 000 Crown town and village maps Digital data sourced from Sydney Water, Hunter District Water Board and Shoalhaven City Council Manual update and digital capture of hard copy maps was undertaken by a combination of private contractors and in house staff LPI Bathurst staff provided quality control of contractor captured data Initial capture commenced 1989 using Genamap software and was completed in1993. Best available data was used : CMA cadastral maps drawn from old parish maps and hand plotted plans ranging in scale from 1:2000 to 1:100 000 Crown town and village maps Digital data sourced from Sydney Water, Hunter District Water Board and Shoalhaven City Council Manual update and digital capture of hard copy maps was undertaken by a combination of private contractors and in house staff LPI Bathurst staff provided quality control of contractor captured data DCDB Update

3. CONTENT Fabric Layer The DCDB currently contains 4,135,300 “legal” fabric parcels 3,055,200 lot parcels 44,500 unidentified parcels 1,017,600 road parcels 18,000 water feature parcels Fabric Layer The DCDB currently contains 4,135,300 “legal” fabric parcels 3,055,200 lot parcels 44,500 unidentified parcels 1,017,600 road parcels 18,000 water feature parcels DCDB Update

4. CONTENT Corridor Layers The DCDB currently contains 902,000 corridor feature parcels 875,900 road corridors 5,100 railway corridors 21,000 water feature corridors Corridor Layers The DCDB currently contains 902,000 corridor feature parcels 875,900 road corridors 5,100 railway corridors 21,000 water feature corridors DCDB Update

5. CONTENT Administrative Layers The DCDB contains 14 administrative layers County Federal Electoral Division Land District Lands Office Local Aboriginal Land Council Local Government Area Mines Subsidence District Miscellaneous Reserves NPWS Reserve Parish Rural Land Protection District State Electoral District State Forest Suburb Administrative Layers The DCDB contains 14 administrative layers County Federal Electoral Division Land District Lands Office Local Aboriginal Land Council Local Government Area Mines Subsidence District Miscellaneous Reserves NPWS Reserve Parish Rural Land Protection District State Electoral District State Forest Suburb DCDB Update

6. UPDATE SOURCES New plan registrations at LPI Sydney Amendments from Crown Lands Division Gazette notices, legislation and notification New and amended data from external agencies Corrections to DCDB identified both internally and by external agencies New plan registrations at LPI Sydney Amendments from Crown Lands Division Gazette notices, legislation and notification New and amended data from external agencies Corrections to DCDB identified both internally and by external agencies DCDB Update

7. ACTIVITY BY UPDATE TYPE Plan updates – 67% (43% subdivision updates, 57% non subdivision, e.g. compilation, strata) Ad Hoc updates, corrections and/or modification of existing data - 16% Corridor updates - 5% Administrative boundary updates gazetted/notified or by legislation - 3% Miscellaneous updates – 9% Plan updates – 67% (43% subdivision updates, 57% non subdivision, e.g. compilation, strata) Ad Hoc updates, corrections and/or modification of existing data - 16% Corridor updates - 5% Administrative boundary updates gazetted/notified or by legislation - 3% Miscellaneous updates – 9% DCDB Update

8. ACTIVITY BY JOB AND FEATURE COUNT Average 26,000 jobs processed per year Average 30,000 lot features added per year, with 147,000 lot features being modified Average 68,000 road, railway and water features added/modified per year Average 38,000 road centrelines added/modified Average 420,000 plan lines added/modified per year Average 740,000 “cadpoints” added/modified per year Average 26,000 jobs processed per year Average 30,000 lot features added per year, with 147,000 lot features being modified Average 68,000 road, railway and water features added/modified per year Average 38,000 road centrelines added/modified Average 420,000 plan lines added/modified per year Average 740,000 “cadpoints” added/modified per year DCDB Update

9. RESOURCES ARC ESRI GIS software which was adopted in December 2004 is used to update the DCDB ARC provides a job management system (JTX) which enables all jobs to be tracked by operator and job stage Access to title data and plan images is provided through the Department’s “SIX” website Imagery and/or topographic data is also imported where required The process is managed by a Team Leader and 2 Supervisors, with 20 operators undertaking jobs allocated by LGA ARC ESRI GIS software which was adopted in December 2004 is used to update the DCDB ARC provides a job management system (JTX) which enables all jobs to be tracked by operator and job stage Access to title data and plan images is provided through the Department’s “SIX” website Imagery and/or topographic data is also imported where required The process is managed by a Team Leader and 2 Supervisors, with 20 operators undertaking jobs allocated by LGA DCDB Update

10. ACCURACY Except where data has been upgraded the base data accuracy is derived from the accuracy of the original source documents, e.g. + or - 2 metres from 1:4000 maps, + or - 12.5 metres for 1:25000 maps etc Generalisation caused by original map scale results in some boundary steps and bends being omitted from the data Digital data used in original capture carries no accuracy as supplying organisations could not provide metadata Unless the area has been upgraded, no accuracy metadata is stored against points or lines, rather the accuracy of the base data is referred to when needed Except where data has been upgraded the base data accuracy is derived from the accuracy of the original source documents, e.g. + or - 2 metres from 1:4000 maps, + or - 12.5 metres for 1:25000 maps etc Generalisation caused by original map scale results in some boundary steps and bends being omitted from the data Digital data used in original capture carries no accuracy as supplying organisations could not provide metadata Unless the area has been upgraded, no accuracy metadata is stored against points or lines, rather the accuracy of the base data is referred to when needed DCDB Update

11. UPDATE PROCESS Plans registered at LPI Sydney are scanned and incorporated into job packets that are placed on the job queue that are accessed by update operators using JTX. Where jobs are corrections or miscellaneous jobs the jobs are created by the operator. Bearing and distance data is captured for “Survey” type jobs and stored for later access in the upgrade process. The captured plan data is input using a ”fit to fabric” process except where gross errors outside of expected base data accuracy are found, when “Ad Hoc” updates are carried out to fix such problems Plans registered at LPI Sydney are scanned and incorporated into job packets that are placed on the job queue that are accessed by update operators using JTX. Where jobs are corrections or miscellaneous jobs the jobs are created by the operator. Bearing and distance data is captured for “Survey” type jobs and stored for later access in the upgrade process. The captured plan data is input using a ”fit to fabric” process except where gross errors outside of expected base data accuracy are found, when “Ad Hoc” updates are carried out to fix such problems DCDB Update

12. UPDATE PROCESS (Continued) The system imposes strict checks to ensure our cadastral business rules are adhered to in the “BUILD” stage and that topology is maintained in the “QA VALIDATE” stage Completed jobs are then incorporated into the DCDB Maintenance data set in the “POST” stage Data from the maintenance data base is posted to the delivery data base for distribution to clients The system imposes strict checks to ensure our cadastral business rules are adhered to in the “BUILD” stage and that topology is maintained in the “QA VALIDATE” stage Completed jobs are then incorporated into the DCDB Maintenance data set in the “POST” stage Data from the maintenance data base is posted to the delivery data base for distribution to clients DCDB Update

13. UPDATE PROCESS OVERVIEW DCDB Update

14. DCDB USE BY LGA DCDB Data Supply

15. INCREMENTAL UPDATE SUPPLY DCDB Data Supply

16. FREQUENCY OF UPDATE SUPPLY DCDB Data Supply

17. DCDB Upgrade WHY UPGRADE Conflicting accuracy with other datasets Availability of a range of accurate imagery Accurate GPS for positioning assets Increased use of GIS applications Conflicting accuracy with other datasets Availability of a range of accurate imagery Accurate GPS for positioning assets Increased use of GIS applications

18. DCDB Upgrade WHY A SINGLE CADASTRE Eliminate duplication Single source of reference Consistent approach to upgrade Incremental electronic updates More than 150 potential clients Eliminate duplication Single source of reference Consistent approach to upgrade Incremental electronic updates More than 150 potential clients

19. DCDB Upgrade UPGRADE PROGRAM LGA Based Agency enters into a MOU Agency commits to a Single Cadastre Compelling or strategic reasons - internal and external Available survey control, accurate plans and connections LGA Based Agency enters into a MOU Agency commits to a Single Cadastre Compelling or strategic reasons - internal and external Available survey control, accurate plans and connections

20. CURRENT PROGRAM Sydney Metropolitan –Sydney Water Completed 2007 –Spatial comparison of approximately 1.35 million polygons –400,000 polygons upgraded to SWC position Regional NSW –Cities –Towns and villages –200,000 polygons upgraded Rural NSW –Test 3,500 polygons Sydney Metropolitan –Sydney Water Completed 2007 –Spatial comparison of approximately 1.35 million polygons –400,000 polygons upgraded to SWC position Regional NSW –Cities –Towns and villages –200,000 polygons upgraded Rural NSW –Test 3,500 polygons DCDB Upgrade

21. TARGET ACCURACY Sydney Water AOI within 0.2 of SW position Metro Areas –0.5 metres is achievable with adequate survey control and plans –0.3 is achievable with optimum survey control and plans Urban Areas –0.5 metres is achievable with adequate survey control and plans –0.3 is achievable with optimum survey control and plans Rural Areas –depends on control source –LPMA developing improved processes Sydney Water AOI within 0.2 of SW position Metro Areas –0.5 metres is achievable with adequate survey control and plans –0.3 is achievable with optimum survey control and plans Urban Areas –0.5 metres is achievable with adequate survey control and plans –0.3 is achievable with optimum survey control and plans Rural Areas –depends on control source –LPMA developing improved processes DCDB Upgrade

22. DCDB Survey Plan Content DP’s in DCDB (Excluding Departmentals)549958 49.4% Departmentals 989279.9% Portion Plans DP 750001 to 757523363833 32.7% Town Portions DP 757523 to 759144100895 9.0% Total1,113,613 100% DCDB Upgrade

23. Cadastral Upgrade 12.7% has Control 1.7% full Geometry

24. All 750,000’s DPs Bathurst Regional LGA

25. UPGRADE METHOD Complete B&D capture Cadastral traverses Conflation Complete B&D capture Cadastral traverses Conflation DCDB Upgrade

26. Old Position

27. Upgraded Position Cadastral Upgrade

28. COMPLETE B&D CAPTURE Cadastral Upgrade

29. CADASTRAL TRAVERSE

30. Conflation Cadastral Upgrade CONFLATION

31. Cadastral Upgrade IRRIGULAR SHIFTS

32. DCDB Upgrade UPGRADE RESOURCES ARC ESRI GIS – capture and manage data ACRES - capture adjust and integrate data Conflation - move DCDB to another target dataset Upgrade Manager (CE) capture and adjust small areas Team Leader and two Supervisors, with 10 operators ARC ESRI GIS – capture and manage data ACRES - capture adjust and integrate data Conflation - move DCDB to another target dataset Upgrade Manager (CE) capture and adjust small areas Team Leader and two Supervisors, with 10 operators

33. DCDB Upgrade Survey Measurements + LSA 1890 Survey Plan Survey Measurements + LSA 1995 Survey Plan Survey Measurements + LSA 2008 Survey Plan CADASTRAL FABRIC Contractor, Council, LPMA Least Squares Adjustment of 1000s of plans in one adjustment DCDB Static Shape 2010 Plan Update New Title Fit to Fabric Fit DCDB fabric to Plan Readjust DCDB every update Alternate Plan Update New Title Observe how measurements change throughout the process. How important is it? MILLIMETRE MADNESS

34. Gaps Overlaps DCDB Adjustment Job DCDB Upgrade

35. Buffer Polygons DCDB Outside Boundary Locked Down Flexible Inside Boundary DCDB Upgrade

36. INTEGRATING ACCURATE DATA DCDB Upgrade

39. MOVING ASSETS Pipes, wires, planning etc Shift vectors provided by LPMA Software solutions LPI Support Contractor services Pipes, wires, planning etc Shift vectors provided by LPMA Software solutions LPI Support Contractor services DCDB Upgrade

40. METADATA DCDB Upgrade

41. PARTNERING TO ACCELERATE THE UPGRADE PROCESS LPMA will provide free of charge: –Imagery –Access to SCIMS –Copies of plans –Access to CORS for an agreed period –Consultation with LPMA staff on upgrade strategies Council might provide –Plan geometry –Upgraded cadastre –Survey –Imagery –Reconnaissance LPMA will provide free of charge: –Imagery –Access to SCIMS –Copies of plans –Access to CORS for an agreed period –Consultation with LPMA staff on upgrade strategies Council might provide –Plan geometry –Upgraded cadastre –Survey –Imagery –Reconnaissance DCDB Upgrade

42. Cadastral Upgrade