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Effectiveness of submerged vanes for stabilizing streamside bluffs

November 19, 2020

The effectiveness of submerged vanes for stabilizing streamside bluffs varied over a 10-year monitoring period in a tributary to Lake Superior, United States. Submerged vanes are a river training device used to divert river flows away from eroding banks along meander bends and ultimately hold constant or reverse the direction of lateral migration. At the study site, the relatively steep slope, large substrate size, and flashy flow regime pushed the upper end of the design limitations of submerged vanes. Changes in channel location and morphology due to the vanes were monitored using repeat channel cross-section surveys along a 110-m reach. The vanes experienced 15 floods over the monitoring period. The two most damaging floods happened in the summer and fall of 2005 with annual exceedance probabilities of 7% and 6% respectively. A new data analysis method for rivers, using centroids of cross sections, was useful to track channel migration rapidly and objectively and, along with calculations of changes in bankfull channel size, provide metrics to describe channel change.

Citation Information

Publication Year 2020
Title Effectiveness of submerged vanes for stabilizing streamside bluffs
DOI 10.1061/(ASCE)HY.1943-7900.0001834
Authors Benjamin O. Lee, Faith A. Fitzpatrick, John A. Hoopes
Publication Type Article
Publication Subtype Journal Article
Series Title Journal of Hydraulic Engineering
Index ID 70217013
Record Source USGS Publications Warehouse
USGS Organization Upper Midwest Water Science Center

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