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  • The project was funded by the United States Department of Energy. Contract No. EG-77-S-07-1691 through the Idaho Water Resources Research Institute.
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  • Oregondigital df66q292h
    The Grande Ronde River enters on the left and is very muddy but Dairy Canyon Creek is crystal clear.. Photo taken near La Grande, Oregon.
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  • 3. [Image] Dairy Canyon Creek
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    Confluence Dairy Canyon Creek with the Grande Ronde River showing mining silt in the latter
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  • 4. [Image] Joseph Creek Canyon
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    Joseph Creek, tributary to Grande Ronde River;. Photo taken from "Cape Horn" on the road between Enterprise and Troy, Oregon
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  • 5. [Image] Grande Ronde River
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    A section of the upper Grande Ronde River. Shows damage to stream bed caused by mining dredge operation
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  • 6. [Image] Wenaha River
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    Shows the Wenaha River upstream from confluence with Grande Ronde River at Troy, Oregon
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  • Oregondigital df66q283j
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  • Oregondigital df66q4740
    Lower section of Grande Ronde River looking downstream from bridge at Troy, Oregon
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  • Oregondigital df66q2828
    Line where the clear Dairy Canyon Creek enters the extermely turbid Grande Ronde River
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  • 10. [Image] Gravel dredging
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    Gravel dredging on the Grande Ronde River looking upstream from the highway bridge near Island City, Oregon
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