Benchmark Monuments
Woodburn Public Works Engineering Division utilizes Benchmark Monuments which are under the authority of Marion County Public Works Surveyor’s Office. Benchmark Monument Vertical Datum
is NGVD 29/47 and Horizontal Datum is NAD 83/91.
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Below you can find the Marion County Benchmark information for the City of Woodburn and the immediate area.
For more information regarding Benchmarks and other Engineering related questions, please contact the City of Woodburn Engineering Department at 503-982-5240.