New Tax Map Standard for Maintenance and Publishing of Surface Tax Maps Mapping the Mountain State Kurt Donaldson, GISP • Manager, WV GIS Technical Center, WVU • Member, Property Valuation Training & Procedures Commission 6/10/09 Tax Map Workshop
TITLE 189 Mapping the Mountain State PROCEDURAL RULE PROPERTY VALUATION TRAINING AND PROCEDURES COMMISSION SERIES 3 STATEWIDE PROCEDURES FOR THE MAINTENANCE AND PUBLISHING OF SURFACE TAX MAPS New Standard Effective February 2009 http: //www. wvgis. wvu. edu/resources/standards. Guidelines/189 -03. pdf 10 June 2009 WVAGP Tax Map Workshop 2
New Standard (189 CSR 3) Mapping the Mountain State WV Secretary of State http: //apps. sos. wv. gov/adlaw/csr/index. aspx 10 June 2009 WVAGP Tax Map Workshop 3
Finished “Surface” Tax Maps Mapping the Mountain State • Show the property and lot lines, set forth dimensions and/or areas, and other cadastral and cultural features that assessors are required by state law to maintain and publish for the public. • Created by either manual or automated methods in accordance with standards approved by the Property Valuation Training and Procedures Commission – – Cartographic Design / Layout Specifications Map Content Maintenance Procedures / Map Currency Submission Requirements / County Monitoring 10 June 2009 WVAGP Tax Map Workshop 4
Example - Finished Tax Mapping the Mountain State Manually drafted or computer generated 10 June 2009 WVAGP Tax Map Workshop 5
Tax Map History in WV Mapping the Mountain State 1960’s First Tax Maps: County surface tax maps created on linen or mylar sheets and maintained by WV DTR 1990 County Maintenance: County tax map maintenance and creation of finished surface tax maps transferred from state to counties 1990 First uniform statewide mapping standards approved by the Property Valuation Training and Procedures Commission (PVC) 1995 Mineral Lands Mapping Program: WV DTR begins creating digital surface parcels and mineral parcel maps for all coal bearing lands 2007 Tax Map Advisory Committee of PVC recommends revised tax map rule which includes digital map guidelines 2008 Revised tax map rule/standard approved by PVC 2009 New tax map rule/standard (183 CSR 3) for creating manual or computer-generated tax maps approved by PVC becomes effective 10 June 2009 WVAGP Tax Map Workshop 6
Map Tile Reference System Mapping the Mountain State Counties have different reference systems based on the original mapping Primary map tiles Nested Grid True Grid Modified Grid Random Orientation true north Y Y Y N Uniform tile size Y Y N N 100 scale nested within 400 scale Y N N N Map Tile Reference System: The parcel reference system for each county is subdivided into rural tax districts and corporations, which are further subdivided into map tiles / map sheets. The type of parcel reference system is determined by the primary map scale (usually 1”=400’ scale) configuration for rural maps and its relationship to urban areas (usually 1”=100’ scale). 10 June 2009 WVAGP Tax Map Workshop 7
Random Grid – Pendleton County Mapping the Mountain State Random Orientation, No uniform tile size, No nesting of 100’ and 400’ scale maps 10 June 2009 WVAGP Tax Map Workshop 8
Modified Grid - Wetzel County Mapping the Mountain State True North Orientation, No uniform tile size, No nesting of 100’ and 400’ scale maps 10 June 2009 WVAGP Tax Map Workshop 9
TITLE 189 Procedural Rules (1990) These guidelines are obsolete and have been superseded by the new standard effective 2009 Mapping the Mountain State SERIES 3 SERIES 4 Guidelines for Neat, Final Manual Drafting of Surface Tax Maps Statewide Procedures for the Manual Maintenance of Surface Tax Maps 10 June 2009 WVAGP Tax Map Workshop 10
Why revise 1990 Tax Map Standard? Mapping the Mountain State • More Current: Provides guidelines for digital mapping technologies which have become prevalent in the past decade. • Clarification: Enhances the previous rules that define the uniform statewide procedures for the maintenance and publishing of surface tax maps. • National Standards: Conforms to national cadastral mapping standards set forth by the International Association of Assessing Officers and Federal Geographic Data Committee. 10 June 2009 WVAGP Tax Map Workshop 11
Tax Map Advisory Committee (2007) Mapping the Mountain State • PURPOSE: Provide recommendations for updating the WV Code of State Rules relative to the maintenance, publishing, and sale of surface tax maps. • RECOMMENDATION: Repeal and replace existing procedural rules with new guidelines for both manual and digital mapping Report Link: http: //www. wvgis. wvu. edu/resources/standards. Guidelines/Tax_map_committee_report_7 Jan 07. pdf 10 June 2009 WVAGP Tax Map Workshop 12
Committee Members (2006 -07) • • • Assessors Deputy Assessors County Mappers WVDTR Tax Personnel WV GIS Coordinator Geospatial Professionals NAME ORGANIZATION Preston Gooden Assessor - Berkeley County Larry Clifton Assessor - Braxton County Frank Whitacre Assessor - Hampshire County Joseph Alongi Assessor - Hancock County Jim Priester Assessor - Marion County Ron Hickman Assessor - Mason County Terri Funk Assessor - Preston County Dreama Evans Assessor - Raleigh County Steve Sluss Deputy Assessor - Kanawha County Bill King Mapper - Berkeley County Daniel Tassey Mapper - Brook/Hancock Counties JD Adkins Mapper - Cabell County Vince La. Neve Mapper - Hancock County Jeff Tuttle Mapper - Marion County Dave Tarbett Mapper - Mason County Connie Ervin Mapper - Preston County Doug Shahan Mapper - Preston County Cindy Gorman Mapper - Raleigh County Matthew Mullenax Planner - Berkeley County Chris Fletcher Planner - City of Morgantown Yi-Ning Chen WV DTR GIS Analyst Craig Neidig WV GIS Coordinator Kurt Donaldson WV GIS Technical Center Sam Hicks 10 June 2009 Mapping the Mountain State Commissioner - Lewis County WVAGP Tax Map Workshop 13
Guidelines used by Committee to draft New Standard Mapping the Mountain State • 1990 Code of State Rules (Standards) – 1990 Property Valuation Training & Procedures Commission (189 Series, Rules 3 & 4) • International Association of Assessing Officers (IAAO) – 2003 Standard on Digital Cadastral Maps and Parcel Identifiers. – 2004 Standard on Manual Cadastral Maps and Parcel Identifiers. IAAO 2002 -03 189 CSR 3&4 1990 • Federal Geographic Data Committee’s (FGDC) Cadastral Data Subcommittee. FGDC 2006 189 CSR 3 2009 – 2006 Cadastral NSDI Reference Document 10 June 2009 WVAGP Tax Map Workshop 14
IAAO Standards Mapping the Mountain State http: //www. iaao. org/ 10 June 2009 WVAGP Tax Map Workshop 15
FGDC Cadastral Standard Mapping the Mountain State http: //www. nationalcad. org/ 10 June 2009 WVAGP Tax Map Workshop 16
Committee Report (FAQ) Mapping the Mountain State Will the revised tax map rules mandate that all counties create digital tax maps? No. The revised tax mapping rules allow county assessors to create tax maps using either manual or automated procedures. 10 June 2009 WVAGP Tax Map Workshop 17
Committee Report (FAQ) Mapping the Mountain State Will the revised tax map rules cost the counties more money? No. If county assessors are in compliance with the existing tax map rules, then the newly revised rules should not cost the counties any additional funds. Counties may choose to incur additional costs when upgrading their mapping systems, such as transitioning from a manual to digital system. 10 June 2009 WVAGP Tax Map Workshop 18
Committee Report (FAQ) Mapping the Mountain State In the revised rules are parcel dimensions still required to be displayed on surface tax maps? Yes. In accordance with WV Code § 11 -1 C 7(e), property and lot lines and their respective identifiers, dimensions or areas, and other parcel information must be properly annotated on every tax map. 10 June 2009 WVAGP Tax Map Workshop 19
Committee Report (FAQ) Mapping the Mountain State Will the revised tax map rules change the procedures defining the map content, annotation, symbols, or map design that have been the standard for “finished” printed maps since 1990? No. The map content, design, and layout for printed tax maps or print-ready images of tax maps will remain the same. The same uniform standard for maintaining and publishing “finished” printed tax maps is still applicable, whether the maps are created manually or electronically. 10 June 2009 WVAGP Tax Map Workshop 20
Digital Landbase Reference Mapping the Mountain State • A finished tax map is a digitized reference to the legal cadastre, specifically, a reference to the source documents that describe the intent of the on-ground cadastre • A finished tax map is not the official cadastre of record – only a reference to it. A digital landbase does not define land tenure boundaries. • Example: Assessor's Parcel Map used for taxation. These maps should not be used as the basis for engineering and construction which determines the location of built features ("fixed works") 10 June 2009 WVAGP Tax Map Workshop 21
New Standard (189 CSR 3) Mapping the Mountain State WV Secretary of State http: //www. wvsos. com 10 June 2009 WVAGP Tax Map Workshop 22
County Digital Cadastral Mapping Program Mapping the Mountain State Geographic Information Systems (GIS) 10 June 2009 WVAGP Tax Map Workshop 23
Surface Tax Mapping Status 10 June 2009 WVAGP Tax Map Workshop Mapping the Mountain State 24
WV DTR Mineral Parcel Mapping Project (1995) Mapping the Mountain State 10 June 2009 WVAGP Tax Map Workshop 25
Mineral Parcel Mapping Project • Can be a starting point for digital tax map conversions • Not all surface parcel related features collected • Not continually updated Mapping the Mountain State WV DTR Collection Local Tax Map 10 June 2009 State Mapping Project WVAGP Tax Map Workshop 26
What Constitutes a GIS Program? Mapping the Mountain State – Parcel and base map layers referenced to a common coordinate system (i. e. , State Plane, UTM, Lat. /Long. ) – Map layers have topology (i. e. mathematically closed polygons). Important for spatial analysis and linking to parcel attribute data. – Linked to a copy of external databases (e. g. CAMA/IAS). Important for attribute queries. – Seamless (countywide) – Parcel splits / maintenance in a digital environment (contracted / outsourced or in house) – Print-ready tax map books (JPEG, PDF format) submitted to WV DTR and available to public 10 June 2009 WVAGP Tax Map Workshop 27
Same Geographic Space Mapping the Mountain State Table of Contents shows 3 layers 2 Layers displayed – They match! All three match in space 10 June 2009 WVAGP Tax Map Workshop 28
Parcel Layers Mapping the Mountain State Parcel Related Features • Geo-Referenced Tax Map • Digitized Parcel Lines • Parcel IDs • Interior Lot Lines and IDs • Land Hooks and Buildings • Parcel Dimensions Reference Datasets • Road and Water Layers • Aerial Photography Integration (spatial compatibility) of data layers is more difficult if compiled from different sources or assembled at varying time intervals 10 June 2009 WVAGP Tax Map Workshop 29
Related data layers Mapping the Mountain State Structures Boundaries Streets Parcels Land Use Environmental Considerations • Data is organized by layers, with each layer representing a common feature. • Layers are integrated using explicit location on the earth’s surface, thus geographical location is the organizing principal. “The Real World” 10 June 2009 WVAGP Tax Map Workshop 30
Access to WV Spatial Data Infrastructure Access to over $50 million dollars worth of spatial data 10 June 2009 WVAGP Tax Map Workshop Mapping the Mountain State 31
Other Reference Data – Building Footprints Mapping the Mountain State 10 June 2009 WVAGP Tax Map Workshop 32
Other Data - FEMA Flood Layers 10 June 2009 WVAGP Tax Map Workshop Mapping the Mountain State 33
Linked to Assessment Database Mapping the Mountain State A GIS links locational (spatial) and database (tabular) information + Spatial Information Tabular Information Database links to parcels via: (1) parcel identifier or (2) standardized address 10 June 2009 WVAGP Tax Map Workshop 34
GIS = Parcel Features + Database Mapping the Mountain State • GIS are a combination of geographic data and attribute data – Parcel polygons are the spatial features – CAMA/IAS records are the attributes • GIS allow two key types of functionality – Point at a graphic feature and retrieve attributes – Query attributes and see graphic result of query on a map 10 June 2009 WVAGP Tax Map Workshop 35
Topology (spatial relationships) • How to model spatial relationships – Parcels cannot overlap one another – Building footprints must not overlap parcels – Parcel lines cannot have dangles Mapping the Mountain State Error / Validation Checks 10 June 2009 WVAGP Tax Map Workshop 36
Topology – Define Relationships Mapping the Mountain State Define Spatial Relationships among different layers 10 June 2009 WVAGP Tax Map Workshop 37
Seamless Mapping the Mountain State Seamless Not Seamless 10 June 2009 WVAGP Tax Map Workshop 38
Seamless - countywide Mapping the Mountain State Seamless between rural districts and corporations 10 June 2009 WVAGP Tax Map Workshop 39
Electronic Map Books 10 June 2009 WVAGP Tax Map Workshop Mapping the Mountain State 40
Surface Tax Mapping Status 10 June 2009 WVAGP Tax Map Workshop Mapping the Mountain State 41
Challenges – digital conversion Mapping the Mountain State • Maintaining two systems (manual and digital) • Expense • Time • Technical Issues • Organizational Issues - Sharing resources and expenses with other entities can minimize redundancy, ensure interoperability, and maximize benefits. - Conduct pilots to resolve critical issues. 10 June 2009 WVAGP Tax Map Workshop 42
Best Practices Mapping the Mountain State • Tax Map Standards / Guidelines • Monitoring • County Map Examples • Continuing Training / Technical Support • Best Practices 10 June 2009 WVAGP Tax Map Workshop 43
Resources / Questions? Mapping the Mountain State Contact: Kurt Donaldson WV GIS Technical Center, WVU Web: http: //wvgis. wvu. edu Phone: (304) 293 -9467 E-mail: kdonalds@wvu. edu Tax Map Resource Link: http: //www. wvgis. wvu. edu/resources/standards. Guidelines/Tax. Map. Resources. pdf 10 June 2009 WVAGP Tax Map Workshop 44
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