
The town of Ferron sits at the eastern edge of this landscape, where the plateau descent meets an intricate system of irrigation that supports local agriculture. This 2001 revision of the 1979 survey highlights the critical water infrastructure of the region, anchored by the Millsite Reservoir and the adjacent Millsite State Park. From the reservoir, a complex network including the Molen Ditch, King Ditch, and Zwahlen Ditch carves through the terrain to feed the valley floor.
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This is the sole edition of this map. No revisions or reprints were ever made.