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This dataset illustrates the spatial distribution of the stream centerline for the Tualatin River Basin. The data were developed using a combination of digitally available stream centerlines from METRO RLIS as well as surveyed streams from Pacific Water Resources. The data originated in Oregon State Plane, North, NAD 83/91 coordinate system. The data were combined with GPS locations of RSAT data (see metadata for RSATs) collected in the summer of 2000. Linear sections of streams were segmented to establish RSAT values for each segment. Quality of stream was also associated with each segment.
The data provide consultants, planners, and resource managers location, inventory and significance information for wetlands delineated within the City of Tigard.
Displays Goal 5 Tree Grove areas as outlined by FEMA.
Area with a slope equal to or greater than 25 percent (12 degrees).