2017 Map of Bologna Basin
USGS Topo · Published 2017About this map
The North Fork John Day River carves through the landscape of Grant County, anchoring a region of deep canyons and seasonal water sources. Within the southern reaches of the Umatilla National Forest, the terrain is defined by dramatic elevation changes such as Thorn Spring Butte and Negro Knob. The settlement at Big Bend sits along the river's curve, marking a rare point of concentration in a landscape otherwise dominated by drainage systems like Rudio Cr and Birch Cr.
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Map Details
Editions of this 2017 Bologna Basin Map
This is the sole edition of this map. No revisions or reprints were ever made.
Other maps of this area
1951 · Courtrock
USGS Topo · 1:62,500
1951 · Monument
USGS Topo · 1:62,500
1953 · Kimberly
USGS Topo · 1:62,500
1953 · Picture
USGS Topo · 1:62,500
1955 · Canyon City
USGS Topo · 1:250,000
1959 · Canyon City
USGS Topo · 1:250,000
1980 · Monument
USGS Topo · 1:100,000
1990 · Monument
USGS Topo · 1:24,000
1990 · Miller Flat
USGS Topo · 1:24,000
1990 · Bologna Basin
USGS Topo · 1:24,000