Bonanza Hydraulic Mining Site, Swamp Gulch, Salmon, Lemhi County, ID
Swamp Gulch, Salmon vicinity, ID
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Documentation compiled after 1968.
Survey number HAER ID-23
Building/structure dates: 1927 initial construction
Significance: The Bonanza Hydraulic Mining Site is significant as an exceptionally well-preserved, early twentieth century, placer mining site. Its engineering significance is due to its exceptional integrity; the site retains the majority of its original hydraulic mining features, including the water delivery system, the mining pit itself, and tailings disposal features. In addition, the Bonanza site is important as a representation and in corporate operation of placer mines in the Leesburg Basin.
Mines (industrial Facilities)
Historic American Engineering Record (Library of Congress)
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