geography

Benchmarks

Category Geography
Agency City of Portland
Sub-Agency Transportation
Date Released November 14, 2013
Date Updated May 1, 2014
Frequency As needed
Description

ArcGis Layer data for the City of Portland Benchmarks. All elevations are in COP datum. Locations are in NAD83/91, and are approximate. This data is updated regularly, so it should be re-downloaded on a regular basis (every 6mos-1yr).
Agency Program City of Portland / Transportation
Technical Documentation Benchmarks (metadata)
Keywords

Wellhead Protection Area

Category Geography
Agency City of Portland
Sub-Agency Technology
Date Released February 26, 2010
Date Updated February 26, 2010
Frequency As needed
Description

Location and Attributes of Water Supply Wells. 
Agency Program City of Portland / Technology
Technical Documentation Wellhead Protection Area (metadata)
Keywords

Groundwater Maps

Category Geography
Agency City of Portland
Sub-Agency Technology
Date Released February 25, 2010
Date Updated February 25, 2010
Frequency As needed
Description

Estimated Depth to Ground Water in the Portland, Oregon Area (online from USGS).
Agency Program City of Portland / Technology
Technical Documentation Groundwater Maps (metadata)
Keywords
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