2016 urisa track: challenges to implementing an enterprise landbase maintenance program by patrick...
TRANSCRIPT
Challenges to Implementing an Enterprise GIS Landbase Maintenance ProgramSeptember 21-22, 2016
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• Introduction• Challenges & Mitigation Strategies
– Organization– Data Content– Processes– Data Quality– Data Presentation– Technology– Governance– Lessons Learned
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Overview
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• Enterprise GIS Landbase Context– GIS data backbone
• Define• Establish• Maintain• Utilize
– Essential component of GIS Project and/or Enterprise GIS Program
– Techniques and strategies used in support of landbase maintenance program
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Introduction
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Utility Conflation Project Example
Consolidated GIS
Oracle SpatialData Repository
Data Consolidation & Conflation Process(Tools – TruShift, IGEMS)
Michael BakerLandbase
(parcel, Imagery)
Landbase Solution
Utility GISData Model
Facility Inventory
Maps(FIM)
Sanders Maps Quad Maps
TransmissionCircuit Maps
Tower DataSheets
Transmission
Plot Plan
One Line(Hi & Low)
Substation
RealProperties
GISData Set
SAPAsset
ReferenceData
LIDARData
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• Source Selection Criteria– Completeness– Geographic Coverage– Vintage– Accuracy– Resolution
• Data Conversion Specifications– Data Source Matrix– Scrub Procedures– Problem Area Resolution (PAR) – Quality Assurance / Quality Control
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Landbase Source Selection
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• Landbase Program Positioning– Option 1 – within information technology (IT)– Option 2 – part of business unit– Option 3 – component of stand-alone group– Option 4 – external agency
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Organization
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• Resource Utilization– Centralized vs decentralized maintenance– Use of 3rd party resource– Use of contractor/temporary resources
• Regardless of Structure- Single instance of truth- Discourage and avoid separate silo’s
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Other Considerations
August 10, 2012
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• Enterprise Land Data Requirements– Contiguous coverage of service territory
– Support map product creation (rendering)
– As location reference to support facility placement
– Base and/or content for taxation reporting
– Support data analysis and viewing
– Geocoding and address matching
– Minimal security and access restrictions
– Imagery and derived products
– Applicable to multiple user groups within and outside organization
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Data Content
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• Landbase Categorization– Enterprise vs project data vs business data– Types
• Cadastral• Administrative• 3rd Party Subscription• Imagery
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Data Content
10Excergy CorporationProprietary and Confidential
Landbase Layers ExampleUtility Company Landbase Features
COTS / Base Utility Specific 3rd Party Subscription
County PolygonsEasement PolygonsLandmark PolygonsLandmark PointMunicipal PolygonsParcel CentroidsParcel PolygonsPLSS Section PolygonsPLSS Section TicsPLSS Special SurveyPLSS Township PolygonsRailroadsRights-of-Way (ROW) PolygonsStreetsStreet SurfacesState PolygonsTax District PolygonsWaterbodyWatersegmentZip Codes
Baseline RegionsDistrictsPWRD DivisionsPWRD RegionsPWRD SectorsService TerritoryService Center LocationsTroublemen GridsWork Location GridsSanders Map IndexHigh Fire Hazard AreaUtility Mapping GridGrid Operation ZoneAccess RoadsTransmission ROWTrans ROW AnnotationDrafting TextDrafting PointDrafting PolygonStreet Width CalloutsUtility BuildingsSub Parcel OccupationCurb LineUnderground Ordinance BoundaryUtility Right-of-Way
CEC Climate ZonesBLM National Forest BoundaryBLM Public Land OwnershipBLM Wilderness AreaFarmlandsSCAG General PlanSCAG Land UseUS Census BlocksUS Census TractsUS Census Metropolitan AreaLiquifaction AreasFault Lines APFault Lines CAFault Lines RivCoFault Lines VenturaCoFRAP Fire Threat MapFEMA Flood ZonesUSGS Topo Quad Index 24KThomas Brothers Page Grid
Frequency of Change
Annually or less
Quarterly or Bi-Annually
Monthly or Project Driven
Daily or Weekly
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• How to keep up with parcel and street maintenance for large service territory?
– CAD – GIS interoperability to streamline inputs
– Change detection for global vs. localized uplifts
– Capitalize uplift every “x” number of years
– Timing in support of capital project and operation & maintenance activities
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Challenge – Base Land Layers
County PolygonsEasement PolygonsLandmark PolygonsLandmark PointMunicipal PolygonsParcel CentroidsParcel PolygonsPLSS Section PolygonsPLSS Section TicsPLSS Special SurveyPLSS Township PolygonsRailroadsRights-of-Way (ROW) PolygonsStreetsStreet SurfacesState PolygonsTax District PolygonsWaterbodyWatersegmentZip Codes
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• Business driven landbase layer maintenance?
– Same or different GIS platform used
– Conflation dependency mitigation– Service level agreement (SLA)
expectations for dependent layer updates
– Similar or related layer consolidation
– Unnecessary map gridsExcergy CorporationProprietary and Confidential
Challenge – Org. SpecificBaseline RegionsDistrictsPWRD DivisionsPWRD RegionsPWRD SectorsService TerritoryService Center LocationsTroublemen GridsWork Location GridsSanders Map IndexHigh Fire Hazard AreaUtility Mapping GridGrid Operation ZoneAccess RoadsTransmission ROWTrans ROW AnnotationDrafting TextDrafting PointDrafting PolygonStreet Width CalloutsUtility BuildingsSub Parcel OccupationCurb LineUnderground Ordinance BoundaryUtility Right-of-Way
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• 3rd party reference layer refresh?
– Entire layer, no partial edit updates
– Schedule for refresh– Responsibility – IT vs Bus.– Clipping, dissolving, aggregation,
generalization, rasterization methodologies and responsibilities
– Metadata refresh
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Challenge – Org. Specific
CEC Climate ZonesBLM National Forest BoundaryBLM Public Land OwnershipBLM Wilderness AreaFarmlandsSCAG General PlanSCAG Land UseUS Census BlocksUS Census TractsUS Census Metropolitan AreaLiquifaction AreasFault Lines APFault Lines CAFault Lines RivCoFault Lines VenturaCoFRAP Fire Threat MapFEMA Flood ZonesUSGS Topo Quad Index 24KThomas Brothers Page Grid
Landbase Change Process Inputs
Utility
Land
COTS
Base
3rd
Party
Microsoft Excel Worksheet
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• Project or Data Based Approach– Mapper applies both asset/land edits– Separate mappers for land and asset edits
• Maintenance Work Types– Major or minor landbase change– Capital project driven edits– O&M corrections– Emergent work– Special projects– Accuracy and quality improvements– Special event – landbase parcel/street centerline
uplift
Maintenance Processes
Landbase Inputs and OutputsInputs
Data Prep.
Prod. Edits
Data QC
OutputsMissing/private
roads
Removed/relocated roads
Landbase Specification & SLA
Landbase Business Processes
Missing street names
New tract designs
Capital project land edits
Land correction requests (E2)
Annexations
Adhoc Updates to SCE Boundaries
SCE Access Road Edits
Trans ROW edits
Land Rights Check / Easements
3rd Party Sub. Layer Updates
Circuit Mapping
GEDM
Real Prop
Michael Baker
Enterprise GIS Landbase Team
(Infotech (R1/R2), SCE (R3)
GEDM
Real Prop
Other?
Updated SCE MB Landbase
Updated SCE Managed Landbase
MB COTS Refresh
Updated 3rd Party Sub. Landbase
SCE MB COTS Landbase Refresh
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• Managing Editing Inputs– Work request form (paper, online, via WMS)– Minimum change source input criteria– Turnaround time (SLA’s)– Assessing related layer impacts– Updating metadata
• Feature specific – when feature last changed• Layer specific – when layer last edited• Job specific – what changed as part of job number
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Data Quality
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• Landbase Usage Quality Control– Content Presentation Guidelines
• Layer ordering and grouping• Layer naming conventions
– Best Practices for • Viewing – display scales• Plotting – map scale/paper sizes• Annotation – text display
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Data Presentation
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• Maintenance Applications– System of record– Topology dependencies– Long vs. short transaction management
• Viewing & Analysis Applications– Content delivery strategies using web services
(WFS, WCS, WMS)– Render real time versus providing static data
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Technology - Applications
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• Archival and Temporal Requirements– Lineage analysis (parcel mapping)– Support for project audit, reporting, and other time
stamp events• Configuration Management
– Relate table management (i.e. parcel number to parcel ownership)
– Tool tip labels– Metadata access and presentation– Layer name and attribute aliasing– Attribute filtering
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Technology - Data
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• Configuration Management (cont.)– Spatial indices maintenance– Layer grouping, ordering, display scales– Simple and complex query optimization– CRUD matrix (application by data layer)– Security and disaster recovery
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Technology – Database
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Technology - Integration
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• Advisory and Steering Committee– Significant landbase change management
– Improvement optimization
– Layer consolidations and additions
– Special projects prioritization
– Guidelines, best practices, and standards
• Change Control Board– Artifact system of record
– New data layer creation
– Data layer removal
– Schema change approvalExcergy CorporationProprietary and Confidential
Governance
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• New Landbase Team Struggles– CAD vs GIS Maintenance
• White space managed annotation layers vs dynamic labels derived from GIS feature attributes
• Making edits to copy in CAD and then uplifting replacement layer to GIS
– Seamless vs Tiled Landbase• Transaction editing by feature instead of map tile
– Time to Edit and Feature Accuracy • Data layer dependencies requires additional steps
to maintain topology • Relative vs. absolute accuracy for feature
placementExcergy CorporationProprietary and Confidential
Lessons Learned
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• Vendor Assisted Edits– Difficult to coordinate with same layer edit
processes– Do not recognize related feature dependencies
unless edits made with data as reference– Edits made offshore require ongoing level of
QA/QC as additional process– Edits made by vendor with secure connection
(VPN, etc.) require coordination for providing source inputs
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Lessons Learned
Questions
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Thank You!
Patrick J. Noonan, GISP
Principal ConsultantExcergy [email protected]: 303-349-4267
Excergy CorporationProprietary and Confidential