WV Spatial Data Infrastructure

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WV Spatial Data Infrastructure
Kurt Donaldson Craig Neidig
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WV Spatial Data Infrastructure
WV Core Layers Orthoimagery Hydrography Transpo
rtation Elevation Boundaries (Governmental
Units) Land Ownership (Cadastral) Structures Ge
ographic Names Geodetic Control
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Build Once, Use Many Times
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Why build Framework base layers?

• Commonly used base spatial data almost always
  need it to make a map
• High resolution spatial and temporal accuracies
• Spatial databases complete in geometry and
  attribution
• Standards-based, well-documented
• Enhanced functionality (i.e., NHD stream flow,
  linear referencing)
• Seamless across political or other collection
  area boundaries
• Reduces costly data duplication efforts
• Facilitates data exchange (i.e., NHD to
  TIGER/Line)
• Certified, consistent base layers for The
  National Map

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Trends for Statewide Core Data Sets
Geospatial Trends for Statewide Core Data Sets
1100,000 Scale 1980S
124,000 Scale 1990s-present
14800 Scale Future
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Orthoimagery

• Present
• 1996-1999 USGS Color-Infrared Digital Orthophoto
  Quads
• 112,000 scale (1 1000 ft.)
• 1 meter GSD
• 1822 USGS 3.75-Minute quarter quads
• Valued at 2 million
• Future
• 2003 Statewide Addressing and Mapping Board
  (SAMB) Natural Color Orthophotos
• 14800 scale (1 400 ft.)
• 2 foot GSD
• 8,000 image files 10,000 x 10,000 Tiles
• 4.72 million USDA cost share 375,000
• Challenges
• Large file size and quantity of SAMB imagery
• Update cycles for new imagery

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Orthoimagery
Present
Future
CIR AERIAL PHOTOS Scale 112,000
1 1,000 ft. Date 1996-97
AERIAL PHOTOS Scale 14800 1 400
ft. Date Spring 2003
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Hydrography

• Present
• 124,000-scale National Hydrography Dataset (NHD)
• 124,000-scale sub watershed boundaries (6th
  level, 12-digit HUCs)
• Future
• Convert SAMB hydography to 14800-scale NHD
• SAMB data minimum attribution
• Challenges
• Funding, needs analysis, cost-effectiveness of
  conversion

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Hydrography (124,000)
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6th Level (12 Digit) Subwatersheds
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Transportation

• Present
• 124,000-scale Topographic Map-Based vectors
  (minimal attribution)
• 162,500-scale WV DOT (cartographic
  generalizations)
• 1100,00-scale Census TIGER files (poor spatial
  resolution)
• Future
• 14800-scale SAMB addressable road centerlines
• Census MAF/TIGER Modernization
• Re-alignment of Census TIGER data to SAMB road
  centerlines
• SAMB data meets minimum requirement of 7.6 meters
  accuracy
• Challenges
• Long-term maintenance of statewide, addressable
  road centerline data set
• Integration with SAMB long-term maintenance
  program
• Integrating statewide road centerline data set
  with locally produced edge of pavement (double
  line) roads

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Transportation (124,000)
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State DOT GIS Implementation
2004 AASHTO GIS-T Symposium
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Elevation

• Present
• 124,000-scale Digital Line Graphy (vector)
  Hypsography (77)
• 30-meter DEMs (100)
• 10-meter DEMs (36)
• Future
• High-Resolution Elevation Products (5 meter or
  better DEM grids)
• WVSAMB enhanced digital terrain model
• WV DOT 850,000 cost share for Microstation files
• USGS Pilot to convert SAMB to gridded raster
• IFSAR digital terrain model
• LIDAR
• Challenges
• Vertical accuracies not guaranteed in dense
  vegetation
• Best product for the National Elevation Dataset
  (NED)

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Elevation (124,000)
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IFSAR (2003)
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Elevation
1.25 m
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Boundaries (Governmental Units)

• Present
• Various types of political and administrative
  boundaries compiled at various scales County
  and Municipal Boundaries Census Geographic
  Entity Boundaries Public Land Boundaries Tax
  District Boundaries Emergency Service Zone
  Boundaries Legislative Boundaries
• Future
• Improved Coordination
• WV Association of Land Surveyors for
  GIS-compatible surveys
• WV Legislative Redistricting Office for District
  Boundaries
• Census Submission of Digital Annexation
  Boundary Surveys
• Improve Boundaries with SAMB data
• Challenges
• Certified, consistent boundaries the same for all
  levels of government
• Shared geographic boundaries properly aligned
  (i.e., WMAs with NF)

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Boundaries (124,000-scale)
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Boundary Comparison (24k versus 500k)
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Land Ownership (Cadastral)

• Present
• 42 of 55 counties (76 ) are using, or
  transitioning to, GIS-based tax mapping programs
• Future
• Link SAMB addressable mapping files (i.e.,
  structures) with cadastral
• Challenges
• Local assessors establishing GIS-based mapping
  programs
• Linking geographic files to States Integrated
  Assessment System (IAS)
• Capitalize on Mineral Parcel Mapping Project
• Statewide repository of tax parcel files

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WV Digital Tax Mapping Status
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Mineral Parcel Mapping Project - WVDTR
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Mineral Parcel Mapping Project

• Can be a starting point for digital tax map
  conversions
• Not all surface parcel related features
  collected
• Not continually updated

WV DTR Collection State Mapping Project
Local Tax Map
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Geographic Names

• Present
• Geographic Names Information System (GNIS)
• Updates by West Virginia through web data entry
  and edit forms
• Future (maintenance activities)
• Target GNIS feature classes with high error rate
  for batch processing
• Wildlife Management Areas (WV DNR)
• Schools (WV Army National Guard)
• Update GNIS manmade features with SAMB
  addressable mapping layers
• Schools, Churches, Hospitals, Bridge, Building,
  Airport)
• Incorporate subtypes (Schools public, private,
  college, vocational)
• Challenges
• Reconciling previous with more current name
  databases

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Structures

• Present
• Limited
• Future
• SAMB addressable structures (approximately
  800,000)
• building centroids
• footprint polygons of major structures (gt 7500
  square feet)
• Challenges
• Maintenance of statewide structure database
• Integration of structure spatial database with
  other data models

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SAMB Structures Centroids and Footprints
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Geodetic Control (Transparent Layer)

• Present
• WV High Accuracy Reference Network (HARN)
  established in 2000
• New ground control established through SAMB
• Future
• Additional CORS survey grade base stations
• Densify Federal Base Network
• Challenges
• Establishing protocols for exchanging geographic
  information between surveyors and GIS
  professionals

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The National Map
21st Century Topographic Map A seamless,
continuously maintained, and consistent set of
online, public domain, core geographic data

• Cartographic Product
• High quality, visually appealing printed product
• State Portal to National National WVmap State
  Portal
• Public access to data via USGS, state, or other
  portals
• WVmap portal customized to West Virginias needs
• Seamless download
• Projection and GIS format translators
• Search and map display functions
• Search by place name, address, coordinate)
• Print-on-demand maps
• Challenges
• Establishing protocols for exchanging geographic
  information between surveyors and GIS
  professionals

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Printed Cartographic Product
Morgantown South, WV pilot map
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National Map Viewer
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State Map Viewer
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Wvmap Customized to WVs Needs
Customized Javascript function for ArcIMS
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Viewer Partnerships

• FEDERAL
• National Elevation Dataset (USGS)
• National Hydrography Dataset (USGS)
• Geographic Names (USGS)
• Flood Hazard Areas (FEMA)
• SAMB Orthophotos (USDA)
• National Forest Lands (USFS)
• National Park Lands (NPS)
• STATE
• State Forests / Wildlife Management Areas (WV
  DNR)
• Critical Infrastructure (WV OES)
• Water Intakes ( WV BPH)
• Mining Data (WV DEP)
• Geology (WV GES)
• Coal Impoundments (WV CS, CET)
• Land Cover (WVU NRAC)
• PRIVATE SECTOR
• New Roads (Baker Engineering)

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AGENCY ROLL CALL

• Present and future mapping activities
• Final Report August 1st
• 62 agencies submitted