The University of Washington Geographic Information Service
at the School of Environmental and Forest Sciences

 

Washington State Parcel Database Development

History

Since 2001, the Rural Technology Initiative - in partnership with Washington State government, conservation organizations, and forestry foundations - has been seeking an understanding of the geography and demographics of forest lands and forest landowners in Washington State. In 2001, RTI produced the Small Forest Landowner Database for the Washington Department of Natural Resources Small Forest Landowner Office. This was a quasi-spatial tabular database, and a first attempt at quantifying the presence and magnitude of small forest landowners in Washington.

Between 2001 and 2007, RTI continued to work towards more accurately and efficiently capturing the variety of forest landowners in Washington and providing agencies and other groups with valuable forest landowner presence and environmental attribute information. The following is a sample of projects completed over the six years:

In 2006, the Rural Technology Initiative, the Family Forest Foundation, and the Washington Farm Forestry Association, with funding from the USDA Forest Service, began working on creating a statewide, spatially explicit, parcel-based forest land database. Enabled by GIS technologies, the Washington State Forestland Database, an interactive database of forested lands, is the foundation for analysis of the family forest demographic. This database facilitates the assessment of family forest impacts on local and state economies, and provide information on potential challenges and opportunities that family forest owners face in marketing their forest products and environmental services.

However, in order to make this database relevant now and in the future, it was recognized that a concerted effort was needed to produce a comprehensive, consistent, and updatable statewide parcel database. In response to this need, the Washington State Forestland Database project expanded its objectives to assist in the creation of a statewide parcel database, the Washington State Parcel Database.

Timeline

Phase I -- 2007 Database
Task Time
Encourage the use and need for a statewide parcel database On-going
Form the Parcel Working Group Q3 2006
Invite project participants On-going
Conduct a user survey Q1 2007
Conduct a needs assessment Q2 2007
Document dervivative works Q2 2007
Collect currently published parcel data Q3 2007
Document similarities and differences Q3 2007
Identify greatest common attributes Q1 2008
Normalize attribute and geometry data Q1 2008
Create seamless parcel layer Q2 2008
Test Washington State Parcel Database with Govt Working Group Members Q3 2008
 
Phase II -- 2009 Database
Task Time
Begin Phase II Q1 2009
Collect Current Source Parcel Data Q2-Q3 2009
Review and Revise Database Structure with Technical Subcommittee Q2 2009
Normalize attribute and geometry data Q2-Q4 2009
Quality Control Testing Q4 2009
Conduct Database User Survey Q1 2010
Distribution of Database to Parcels Working Group Q1 2010
 
Phase III -- 2010 Database
Task Time
Begin Phase III Q4 2010
Collect Current Source Parcel Data Q4 2010-Q2 2011
Develop inventory of and common attributes for structures on parcels Q1 2011
Normalize attribute and geometry data Q1-Q2 2011
Quality Control Testing Q2 2011
Conduct Database User Survey Q2 2011
Distribution of Database to Parcels Working Group Q2 2011
 
Phase IV -- 2012 Database
Task Time
Begin Phase IV Q1 2012
Collect Current Source Parcel Data Q1-Q2 2012
Develop inventory of and common attributes for structures on parcels Q1-Q2 2012
Normalize attribute and geometry data Q1-Q2 2012
Quality Control Testing Q3 2012
Conduct Database User Survey Q3 2012
Distribution of Database to Parcels Working Group Q3 2012

 


Process

Development of the Washington State Parcel Database is a complicated effort involving the collection and transformation of spatial and tabular data from Washington's 39 counties into a standardized statewide spatial dataset. Resources available in each county to develop and maintain parcel data vary widely. Availability and accuacy of spatial data varies across the State as well.

Learn about the process of creating a statewide parcel database by clicking on the image below.

Learn about the process of creating a statewide parcel database by clicking on this image

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