
Sheepshead Mountains dominate the northern landscape of this Malheur County quadrangle, where the high desert terrain transitions into deep drainage systems. The namesake Grassy Ridge Well and an adjacent Water Tank serve as critical landmarks in an arid expanse defined by significant elevation changes. Water management and livestock support are central to the human footprint here, as evidenced by these specific installations situated along Grassy Ridge.
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This is the sole edition of this map. No revisions or reprints were ever made.
1955 · Jordan Valley
USGS Topo · 1:250,000
1955 · Adel
USGS Topo · 1:250,000
1957 · Adel
USGS Topo · 1:250,000
1957 · Jordan Valley
USGS Topo · 1:250,000
1958 · Adel
USGS Topo · 1:250,000
1958 · Jordan Valley
USGS Topo · 1:250,000
1962 · Adel
USGS Topo · 1:250,000
1972 · Palomino Hills
USGS Topo · 1:24,000
1980 · Flat Top Mtn
USGS Topo · 1:24,000
1980 · Rome State Airport
USGS Topo · 1:24,000