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Title: Turbidity changes during culvert to bridge upgrades at Carmen Creek, Idaho
Author: Foltz, Randy B.; Westfall, Breann; Kopyscianski, Ben;
Source: Report to Bureau of Land Management; FFIS Agreement 2216-07-IA287. Washington, DC: U.S. Department of the Interior, Bureau of Land Management. 8 p.
Publication Series: Miscellaneous
Description: Carmen Creek, a tributary to the Salmon River in Idaho, was the site of two culvert to bridge upgrade operations in September and October 2011. Both locations were upgraded from multiple, large diameter culverts to bridge crossings. Turbidity readings measured at the end of the mixing zone during the nearly three weeks of upgrade construction activities did not exceed the Idaho state instantaneous criteria of 50 NTU above the background. The sediment mitigation measures of diverting the creek around the road crossing and temporary in-creek dams were effective in keeping the turbidity values within state regulatory requirements.
Keywords: turbidity, sediment mitigation, culvert to bridge upgrade, Carmen Creek, Salmon River in Idaho
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Foltz, Randy B.; Westfall, Breann; Kopyscianski, Ben. 2012. Turbidity changes during culvert to bridge upgrades at Carmen Creek, Idaho. Report to Bureau of Land Management; FFIS Agreement 2216-07-IA287. Washington, DC: U.S. Department of the Interior, Bureau of Land Management. 8 p.
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