Ovando serves as the primary hub in this portion of the Blackfoot Valley, situated where the Blackfoot River meets a network of vital mountain drainages. The landscape is defined by the transition from the high elevations of the Lolo National Forest into a valley floor marked by glacial features, including numerous prairie potholes and larger bodies of water like Upsata Lake, James Lake, and Lahrity Lake. These water resources were historically managed through an intricate system of irrigation, evidenced by the Dunham Cr Ditch and Barbour Ditch.
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This is the sole edition of this map. No revisions or reprints were ever made.
1902 · Ovando
USGS Topo · 1:125,000
1905 · Ovando
USGS Topo · 1:125,000
1919 · Drummond
USGS Topo · 1:125,000
1921 · Drummond
USGS Topo · 1:125,000
1947 · Butte
USGS Topo · 1:250,000
1955 · Choteau
USGS Topo · 1:250,000
1957 · Choteau
USGS Topo · 1:250,000
1958 · Butte
USGS Topo · 1:250,000
1958 · Choteau
USGS Topo · 1:250,000
1960 · Butte
USGS Topo · 1:250,000