
Cherry Grove and Pike anchor the eastern and southern reaches of this landscape, where the headwaters of the Tualatin River wind through a complex system of ridges and drainage basins. The area's water management is evident through several major impoundments, including the Barney Reservoir in the west and Hillsboro Reservoir to the north. These reservoirs, alongside the Yamhill Reservoir and Turner Creek Reservoir, suggest a terrain heavily modified for regional utility.
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This is the sole edition of this map. No revisions or reprints were ever made.
1941 · Timber
USGS Topo · 1:62,500
1941 · Gales Creek
USGS Topo · 1:62,500
1941 · Yamhill
USGS Topo · 1:62,500
1942 · Yamhill
USGS Topo · 1:62,500
1942 · Fairdale
USGS Topo · 1:62,500
1948 · Vancouver
USGS Topo · 1:250,000
1950 · Vancouver
USGS Topo · 1:250,000
1950 · Vancouver
USGS Topo · 1:250,000
1955 · Timber
USGS Topo · 1:62,500
1955 · Fairdale
USGS Topo · 1:62,500