Need to find the assessed value of your property? What school district and what schools serve your location? What is the approximate elevation of your property? What natural hazards might affect your property?

These questions and more can now be answered though an updated CMap, Clackamas County’s online-mapping and land-information application.

“While we have had CMap around for a long time, this new version really shows what our team of programmers can do with Open Source technologies,” said Dave Cummings of Clackamas County. “Using open source really provided the county some significant cost savings.”

CMap, at, allows users to retrieve assessment, service provider and hazard information about a particular tax lot, and provides a map and aerial photos. In addition, users can access the assessor’s parcel maps and selected survey documents.

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