wing dam

noun
1.
a jetty for diverting the current of a stream.
Also called spur, spur dike.
Origin
1800-10, Americanism
Examples from the web for wing dam
  • Drift cut bait in the edge where the river's faster current meets the eddy created by the wing dam.
  • Consequently, information about wing dam and tailwater sampling is excluded from annual means reported by the fish component.