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Snake River in Idaho and Wyoming has annual floods that approximate 20,000 cfs; experience with Corps of Engineers levees and bank protection along approximately 37 miles of stream during last 20 yr shows that failures of levees and riprap are generally caused by undermining, but such failures can be avoided by extending riprap below active depth of bedload movement and scout; stone size of riprap, as specified in engineering manuals, is sufficiently large but small stone and dirt that prevent interlock must be avoided; riprap slopes should not be steeper than 1 on 2; riprap can be overtopped several feet without damage, provided levee slopes are relatively flat and are protected with coarse gravel.
Snake River in Idaho and Wyoming has annual floods that approximate 20,000 cfs; experience with Corps of Engineers levees and bank protection along approximately 37 miles of stream during last 20 yr shows that failures of levees and riprap are generally caused by undermining, but such failures can be avoided by extending riprap below active depth of bedload movement and scout; stone size of riprap, as specified in engineering manuals, is sufficiently large but small stone and dirt that prevent interlock must be avoided; riprap slopes should not be steeper than 1 on 2; riprap can be overtopped several feet without damage, provided levee slopes are relatively flat and are protected with coarse gravel.
Snake river bank stabilization
ASCE -- Proc (J Waterways Harbors Div)
Jones, L.B. (author)
1966
16 pages
Article (Journal)
English
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