
Fresno Reservoir dominates this Hill County landscape, where the impounded waters of the Milk River fill a winding valley framed by steep coulees. The terrain is defined by dramatic elevation shifts, particularly around Saddle Butte, which rises as a prominent landmark above the reservoir's northern banks. This 1969 field-checked survey by the U. S. Geological Survey shows a largely rural and hydraulic environment, with underwater contours provided by the U. S. Bureau of Reclamation.
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This is the sole edition of this map. No revisions or reprints were ever made.