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Extent of the City of West Linn; my hometown 

Full PDF version of my analysis available at the bottom of the page.

The extent of the city of West Linn shown here was produced by me. 

Data Sources: Oregon Spatial Data Library, Clackamas County GIS Data Portal, and USGS The National Map. c2019 Created: 20 Jan. 2019 in ArcMap 10.6.1 Projection: NAD 1983 HARN StatePlane Washington South FIPS 4602 feet

Figure 1

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Several barriers upstream of a potential coho salmon spawning ground.

Figure 2

Known fish barriers that are within immediate relative distance to high traffic bridges.

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Figure 3

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The concentration of bridges in a short section nearby the current known coho salmon migration route. The Portland Hills Fault Line can also be observed dissecting most of the concentration of bridges. 

Figure 4

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Credit:West Linn GIS

Aerial image of the extent of West Linn as analyzed above. 

Figure 5

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