From 1995-1998 the Oregon GIS Association (OGISA) in partnership with county cartographers, the Oregon Geographic Information Council (OGIC), and the Oregon Association of County Engineers and Surveyors (OACES) developed the ORMAP concept.

A technical committee made up of state, local, and county government representatives devised the interchange format and the data standard, tested it using land records from several counties, and developed several simple demonstrations using the information.

The Oregon Department of Revenue's Cadastral Information Systems Unit and the ORMAP Technical Group have developed:

• ORMAP Technical Specifications [PDF]
• ORMAP Mapping Methodology [PDF]
• Process for Quality Control [PDF]
• ORMAP Reliability Codes [PDF]

The ORMAP data will comply with the Oregon Cadastral Exchange Standard, which may be downloaded at:

• http://www.oregon.gov/DAS/IRMD/GEO/standards/standards.shtml