
The Umatilla River valley defines this part of the Oregon high desert, where a complex network of irrigation infrastructure transformed the landscape. A sophisticated system of water management is visible through features like the Maxwell Canal, Hermiston Ditch, and the Stanfield Drain, which divert water to support local agriculture. The northern portion of the map is dominated by the Cold Springs National Wildlife Refuge, centered on the Cold Springs Reservoir.
73 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.
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