
Baker Valley and the expansive Missouri Flat floor anchor the southern portion of this landscape, where agricultural water management is evident through systems like Lilley Ditch and Swinger Ditch. These irrigation efforts support the lowlands near Baldock Slough and Mid Slough as they drain toward the Powder River. The terrain rises sharply toward the northeast, culminating at Magpie Peak, where the drainage pattern shifts to steep canyons including Gentley Creek and Magpie Creek.
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1901 · Baker City
USGS Topo · 1:125,000
1906 · Telocaset
USGS Topo · 1:125,000
1955 · Baker
USGS Topo · 1:250,000
1955 · Grangeville
USGS Topo · 1:250,000
1959 · Baker
USGS Topo · 1:250,000
1959 · Grangeville
USGS Topo · 1:250,000
1965 · Medical Springs
USGS Topo · 1:24,000
1965 · North Powder
USGS Topo · 1:24,000
1965 · Telocaset
USGS Topo · 1:24,000
1967 · Virtue Flat
USGS Topo · 1:24,000