Racetrack occupies the southern edge of this Montana landscape, where the Clark Fork river and Modesty Cr flow through the valley floor. The map documents a sophisticated water management network essential for high-country ranching and agriculture, featuring the Powell Reservoirs and several major irrigation works like the W Side Canal and Morrison Ditch. These man-made channels diverge from natural drainages such as Dempsey Cr and Powell Cr to sustain the surrounding valley.
35 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1889 · Helena
USGS Topo · 1:250,000
1893 · Helena
USGS Topo · 1:250,000
1899 · Helena
USGS Topo · 1:250,000
1903 · Helena
USGS Topo · 1:250,000
1947 · Butte
USGS Topo · 1:250,000
1958 · Butte
USGS Topo · 1:250,000
1959 · Butte North
USGS Topo · 1:62,500
1959 · Deer Lodge
USGS Topo · 1:62,500
1960 · Butte
USGS Topo · 1:250,000
1961 · Anaconda
USGS Topo · 1:62,500