1967 Map of Diamond Swamp

About this map

Malheur National Wildlife Refuge dominates this section of the High Desert, revealing an intricate hydrological system of natural waterways and mid-century irrigation works. The Donner Und Blitzen River feeds into the expansive Diamond Swamp, supported by a complex network including the Skunk Canal, Diamond Canal, and Krumbo Canal. This aquatic landscape contrasts sharply with the volcanic geology to the east and south, where the Diamond Craters and extensive Lava flows define the terrain. Human activity is represented by the Buena Vista Patrol Station and Grain Camp, where the Grain Camp Dam regulated water levels for the refuge. The presence of Borrow Pit locations and a Prospect suggests the intersection of conservation and resource extraction in Harney County during the late 1960s.