WV Spatial Data Infrastructure Kurt Donaldson Craig Neidig

WV Spatial Data Infrastructure WV Core Layers: Orthoimagery Hydrography Transportation Elevation Boundaries (Governmental Units) Land Ownership (Cadastral) Structures Geographic Names Geodetic Control

Build Once, Use Many Times

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

Trends for Statewide Core Data SetsGeospatial Trends for Statewide Core Data Sets 1:24,000 Scale 1990’s-present 1:100,000 Scale 1980’S 1:4800 Scale Future

Orthoimagery Present – USGS Color-Infrared Digital Orthophoto Quads 1:12,000 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 1:4800 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

Orthoimagery CIR AERIAL PHOTOS Scale: 1:12,000 1” = 1,000 ft. Date: AERIAL PHOTOS Scale: 1:4800 1” = 400 ft. Date: Spring 2003 PresentFuture

Hydrography Present –1:24,000-scale National Hydrography Dataset (NHD) –1:24,000-scale sub watershed boundaries (6 th level, 12-digit HUCs) Future –Convert SAMB hydography to 1:4800-scale NHD –SAMB data: minimum attribution Challenges –Funding, needs analysis, cost-effectiveness of conversion

Hydrography (1:24,000)

6 th Level (12 Digit) Subwatersheds

Transportation Present –1:24,000-scale Topographic Map-Based vectors (minimal attribution) –1:62,500-scale WV DOT (cartographic generalizations) –1:100,00-scale Census TIGER files (poor spatial resolution) Future –1:4800-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

Transportation (1:24,000)

State DOT GIS Implementation 2004 AASHTO GIS-T Symposium

Elevation Present –1:24,000-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)

Elevation (1:24,000)

IFSAR (2003)

Elevation DATASET NAMEOWNER(S)Horiz. Accuracy Vertical RMSE and Contour Interval MAPPING SYSTEM UNIT % WV DATE National Elevation Dataset (Level 1 & 2 DEMs) USGS30 meter 10 to 50 ft. RMSE 20 or 40 ft. C.I. Seamless Nation- wide Digital Line Graph (DLG) Contours and Spot Elevations USGS1:24,000- scale 10 to 20 ft. RMSE 20 or 40 ft. C.I. 7.5 Min. Quad meter DEMs (USGS) USGS10 m10 to 20 ft. RMSE7.5 Min. Quad 36Varies Enhanced DTM (mass points & break lines) WVSAMB5 ft. RMSE 10 ft. C.I. 10,000 ft. x 10,000 ft. tiles IFSAR DTM (5 meter postings) Intermap2.0 m3 ft. (1 st Surface) 10 ft. C.I. 40,000 square km LIDARFEMA0.5 m0.5 ft. RMSE < 2 ft. C.I. Study Area2Varies 1.25 m

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)

Boundaries (1:24,000-scale)

Boundary Comparison (24k versus 500k)

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 State’s Integrated Assessment System (IAS) –Capitalize on Mineral Parcel Mapping Project –Statewide repository of tax parcel files

WV Digital Tax Mapping Status

Mineral Parcel Mapping Project - WVDTR

Mineral Parcel Mapping Project Can be a starting point for digital tax map conversions Not all surface parcel related features collected Not continually updated Local Tax Map WV DTR Collection State Mapping Project

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

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

SAMB Structures – Centroids and Footprints

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

The National Map 21 st 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 Virginia’s 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

Printed Cartographic Product Morgantown South, WV pilot map

National Map Viewer

State Map Viewer

Wvmap – Customized to WV’s Needs Customized Javascript function for ArcIMS

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)

AGENCY ROLL CALL Present and future mapping activities Final Report – August 1 st 62 agencies submitted